def test_rcnn(imageset, year, root_path, devkit_path, prefix, epoch, ctx, vis=False, has_rpn=True, proposal='rpn',
end2end=False):
# load symbol and testing data
if has_rpn:
# sym = get_vgg_test()
config.TRAIN.AGNOSTIC = True
config.END2END = 1
config.PIXEL_MEANS = np.array([[[0,0,0]]])
sym = resnext_101(num_class=21)
config.TEST.HAS_RPN = True
config.TEST.RPN_PRE_NMS_TOP_N = 6000
config.TEST.RPN_POST_NMS_TOP_N = 300
voc, roidb = load_gt_roidb(imageset, year, root_path, devkit_path)
else:
sym = get_vgg_rcnn_test()
voc, roidb = eval('load_test_' + proposal + '_roidb')(imageset, year, root_path, devkit_path)
# get test data iter
test_data = ROIIter(roidb, batch_size=1, shuffle=False, mode='test')
# load model
args, auxs, _ = load_param(prefix, epoch, convert=True, ctx=ctx)
# detect
detector = Detector(sym, ctx, args, auxs)
pred_eval(detector, test_data, voc, vis=vis)
def test_rcnn(imageset,
year,
root_path,
devkit_path,
prefix,
epoch,
ctx,
vis=False,
has_rpn=True,
proposal='rpn'):
# load symbol and testing data
if has_rpn:
sym = get_vgg_test()
config.TEST.HAS_RPN = True
config.TEST.RPN_PRE_NMS_TOP_N = 6000
config.TEST.RPN_POST_NMS_TOP_N = 300
voc, roidb = load_gt_roidb(imageset, year, root_path, devkit_path)
else:
sym = get_vgg_rcnn_test()
voc, roidb = eval('load_test_' + proposal + '_roidb')(imageset, year,
root_path,
devkit_path)
# get test data iter
test_data = ROIIter(roidb, batch_size=1, shuffle=False, mode='test')
# load model
args, auxs, _ = load_param(prefix, epoch, convert=True, ctx=ctx)
# detect
detector = Detector(sym, ctx, args, auxs)
pred_eval(detector, test_data, voc, vis=vis)
def main():
logging.info('########## TRAIN FASTER-RCNN WITH APPROXIMATE JOINT END2END #############')
init_config()
if "resnet" in args.pretrained:
sym = resnet_50(num_class=args.num_classes, bn_mom=args.bn_mom, bn_global=True, is_train=True) # consider background
else:
sym = get_faster_rcnn(num_classes=args.num_classes) # consider background
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup for multi-gpu
ctx = [mx.gpu(int(i)) for i in args.gpu_ids.split(',')]
config.TRAIN.IMS_PER_BATCH *= len(ctx)
max_data_shape, max_label_shape = get_max_shape(feat_sym)
# data
# voc, roidb = load_gt_roidb_from_list(args.dataset_name, args.lst, args.dataset_root,
# args.outdata_path, flip=not args.no_flip)
voc, roidb = load_gt_roidb(args.image_set, args.year, args.root_path, args.devkit_path, flip=not args.no_flip)
train_data = AnchorLoader(feat_sym, roidb, batch_size=config.TRAIN.IMS_PER_BATCH, anchor_scales=(4, 8, 16, 32),
shuffle=not args.no_shuffle, mode='train', ctx=ctx, need_mean=args.need_mean)
# model
args_params, auxs_params, _ = load_param(args.pretrained, args.load_epoch, convert=True)
if not args.resume:
args_params, auxs_params= init_model(args_params, auxs_params, train_data, sym, args.pretrained)
data_names = [k[0] for k in train_data.provide_data]
label_names = [k[0] for k in train_data.provide_label]
batch_end_callback = Speedometer(train_data.batch_size, frequent=args.frequent)
epoch_end_callback = do_checkpoint(args.prefix)
optimizer_params = {'momentum': args.mom,
'wd': args.wd,
'learning_rate': args.lr,
# 'lr_scheduler': WarmupScheduler(args.factor_step, 0.1, warmup_lr=0.1*args.lr, warmup_step=200) \
# if not args.resume else mx.lr_scheduler.FactorScheduler(args.factor_step, 0.1),
'lr_scheduler': mx.lr_scheduler.FactorScheduler(args.factor_step, 0.1), # seems no need warm up
'clip_gradient': 1.0,
'rescale_grad': 1.0}
if "resnet" in args.pretrained:
# only consider resnet-50 here
fixed_param_prefix = ['conv0', 'stage1', 'stage2', 'bn_data', 'bn0']
else:
fixed_param_prefix = ['conv1', 'conv2', 'conv3']
# train
mod = MutableModule(sym, data_names=data_names, label_names=label_names, logger=logger, context=ctx,
max_data_shapes=max_data_shape, max_label_shapes=max_label_shape,
fixed_param_prefix=fixed_param_prefix)
mod.fit(train_data, eval_metric=metric(), epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback, kvstore=args.kv_store,
optimizer='sgd', optimizer_params=optimizer_params, arg_params=args_params, aux_params=auxs_params,
begin_epoch=args.load_epoch, num_epoch=args.num_epoch)
def train_net(image_set, year, root_path, devkit_path, pretrained, epoch,
prefix, ctx, begin_epoch, end_epoch, frequent, kv_store, work_load_list=None, resume=False):
# set up logger
logger = logging.getLogger()
logger.setLevel(logging.INFO)
# load symbol
sym = get_vgg_rpn()
feat_sym = get_vgg_rpn().get_internals()['rpn_cls_score_output']
# setup multi-gpu
config.TRAIN.BATCH_IMAGES *= len(ctx)
config.TRAIN.BATCH_SIZE *= len(ctx)
# load training data
voc, roidb = load_gt_roidb(image_set, year, root_path, devkit_path, flip=True)
train_data = AnchorLoader(feat_sym, roidb, batch_size=config.TRAIN.BATCH_SIZE, shuffle=True, mode='train',
ctx=ctx, work_load_list=work_load_list)
# infer max shape
max_data_shape = [('data', (1, 3, 1000, 1000))]
max_data_shape_dict = {k: v for k, v in max_data_shape}
_, feat_shape, _ = feat_sym.infer_shape(**max_data_shape_dict)
from rcnn.minibatch import assign_anchor
import numpy as np
label = assign_anchor(feat_shape[0], np.zeros((0, 5)), [[1000, 1000, 1.0]])
max_label_shape = [('label', label['label'].shape),
('bbox_target', label['bbox_target'].shape),
('bbox_inside_weight', label['bbox_inside_weight'].shape),
('bbox_outside_weight', label['bbox_outside_weight'].shape)]
print 'providing maximum shape', max_data_shape, max_label_shape
# load pretrained
args, auxs = load_param(pretrained, epoch, convert=True)
# initialize params
if not resume:
arg_shape, _, _ = sym.infer_shape(data=(1, 3, 224, 224))
arg_shape_dict = dict(zip(sym.list_arguments(), arg_shape))
args['rpn_conv_3x3_weight'] = mx.random.normal(mean=0, stdvar=0.01, shape=arg_shape_dict['rpn_conv_3x3_weight'])
args['rpn_conv_3x3_bias'] = mx.nd.zeros(shape=arg_shape_dict['rpn_conv_3x3_bias'])
args['rpn_cls_score_weight'] = mx.random.normal(mean=0, stdvar=0.01, shape=arg_shape_dict['rpn_cls_score_weight'])
args['rpn_cls_score_bias'] = mx.nd.zeros(shape=arg_shape_dict['rpn_cls_score_bias'])
args['rpn_bbox_pred_weight'] = mx.random.normal(mean=0, stdvar=0.01, shape=arg_shape_dict['rpn_bbox_pred_weight'])
args['rpn_bbox_pred_bias'] = mx.nd.zeros(shape=arg_shape_dict['rpn_bbox_pred_bias'])
# train
solver = Solver(prefix, sym, ctx, begin_epoch, end_epoch, kv_store, args, auxs, momentum=0.9, wd=0.0005,
learning_rate=1e-3, lr_scheduler=mx.lr_scheduler.FactorScheduler(60000, 0.1),
mutable_data_shape=True, max_data_shape=max_data_shape, max_label_shape=max_label_shape)
solver.fit(train_data, frequent=frequent)
def test_rpn(image_set, year, root_path, devkit_path, prefix, epoch, ctx, vis=False):
# load symbol
sym = get_vgg_rpn_test()
# load testing data
voc, roidb = load_gt_roidb(image_set, year, root_path, devkit_path)
test_data = ROIIter(roidb, batch_size=1, shuffle=False, mode='test')
# load model
args, auxs, _ = load_param(prefix, epoch, convert=True, ctx=ctx)
# start testing
detector = Detector(sym, ctx, args, auxs)
imdb_boxes = generate_detections(detector, test_data, voc, vis=vis)
voc.evaluate_recall(roidb, candidate_boxes=imdb_boxes)
def test_rpn(image_set, year, root_path, devkit_path, trained, epoch, ctx):
from rcnn.rpn.generate import Detector, generate_detections
# load symbol
sym = get_vgg_rpn_test()
# load testing data
voc, roidb = load_gt_roidb(image_set, year, root_path, devkit_path)
test_data = ROIIter(roidb, batch_size=1, shuffle=False, mode='test')
# load trained
args, auxs = load_param(trained, epoch, convert=True, ctx=ctx[0])
# start testing
detector = Detector(sym, ctx[0], args, auxs)
imdb_boxes = generate_detections(detector, test_data, voc, vis=False)
voc.evaluate_recall(roidb, candidate_boxes=imdb_boxes)
def test_rpn(image_set, year, root_path, devkit_path, trained, epoch, ctx):
from rcnn.rpn.generate import Detector, generate_detections
# load symbol
sym = get_vgg_rpn_test()
# load testing data
voc, roidb = load_gt_roidb(image_set, year, root_path, devkit_path)
test_data = ROIIter(roidb, batch_size=1, shuffle=False, mode="test")
# load trained
args, auxs = load_param(trained, epoch, convert=True, ctx=ctx[0])
# start testing
detector = Detector(sym, ctx[0], args, auxs)
imdb_boxes = generate_detections(detector, test_data, voc, vis=False)
voc.evaluate_recall(roidb, candidate_boxes=imdb_boxes)
def train_net(config):
General, KvstoreParam, RpnParam, RoiParam, BboxParam, DatasetParam, ModelParam, \
OptimizeParam, TestParam, transform, data_name, label_name, metric_list = config.generate_config(is_train=True)
pGen = patch_config_as_nothrow(General)
pKv = patch_config_as_nothrow(KvstoreParam)
pRpn = patch_config_as_nothrow(RpnParam)
pRoi = patch_config_as_nothrow(RoiParam)
pBbox = patch_config_as_nothrow(BboxParam)
pDataset = patch_config_as_nothrow(DatasetParam)
pModel = patch_config_as_nothrow(ModelParam)
pOpt = patch_config_as_nothrow(OptimizeParam)
pTest = patch_config_as_nothrow(TestParam)
gpus = pKv.gpus
if len(gpus) == 0:
ctx = [mx.cpu()]
else:
ctx = [mx.gpu(i) for i in gpus]
input_batch_size = pKv.batch_image * len(ctx)
pretrain_prefix = pModel.pretrain.prefix
pretrain_epoch = pModel.pretrain.epoch
save_path = os.path.join('experiments', pGen.name)
model_prefix = os.path.join(save_path, 'checkpoint')
begin_epoch = pOpt.schedule.begin_epoch
end_epoch = pOpt.schedule.end_epoch
lr_steps = pOpt.schedule.lr_steps
## load dataset
if pDataset.Dataset == 'widerface':
image_set = pDataset.image_set
roidb = load_gt_roidb(pDataset.Dataset,
image_set,
root_path='data',
dataset_path='data/widerface',
flip=True)
net = pModel.train_network
if pOpt.schedule.begin_epoch != 0:
net.load_model(model_prefix, pOpt.schedule.begin_epoch)
else:
net.load_model(pretrain_prefix)
print('hello github!')
def test_rpn(image_set, year, root_path, devkit_path, prefix, epoch, ctx, vis):
# set config
config.TEST.HAS_RPN = True
config.TEST.RPN_PRE_NMS_TOP_N = -1
config.TEST.RPN_POST_NMS_TOP_N = 2000
# load symbol
sym = get_vgg_rpn_test()
# load testing data
voc, roidb = load_gt_roidb(image_set, year, root_path, devkit_path)
test_data = ROIIter(roidb, batch_size=1, shuffle=False, mode='test')
# load model
args, auxs = load_param(prefix, epoch, convert=True, ctx=ctx)
# start testing
detector = Detector(sym, ctx, args, auxs)
imdb_boxes = generate_detections(detector, test_data, voc, vis=vis)
voc.evaluate_recall(roidb, candidate_boxes=imdb_boxes)
def test_net(imageset, year, root_path, devkit_path, prefix, epoch, ctx, vis):
# set config
config.TEST.HAS_RPN = True
# set up logger
logger = logging.getLogger()
logger.setLevel(logging.INFO)
# load testing data
voc, roidb = load_gt_roidb(imageset, year, root_path, devkit_path)
test_data = ROIIter(roidb, batch_size=1, shuffle=False, mode='test')
# load model
args, auxs = load_param(prefix, epoch, convert=True, ctx=ctx)
# load symbol
sym = get_vgg_test()
# detect
detector = Detector(sym, ctx, args, auxs)
pred_eval(detector, test_data, voc, vis=vis)
def test_net(imageset, year, root_path, devkit_path, prefix, epoch, ctx, vis):
# set config
config.TEST.HAS_RPN = True
# set up logger
logger = logging.getLogger()
logger.setLevel(logging.INFO)
# load testing data
voc, roidb = load_gt_roidb(imageset, year, root_path, devkit_path)
test_data = ROIIter(roidb, batch_size=1, shuffle=False, mode='test')
# load model
args, auxs = load_param(prefix, epoch, convert=True, ctx=ctx)
# load symbol
sym = get_vgg_test()
# detect
detector = Detector(sym, ctx, args, auxs)
pred_eval(detector, test_data, voc, vis=vis)
def test_rcnn(imageset, year, root_path, devkit_path, prefix, epoch, ctx, vis=False, has_rpn=True, proposal='rpn'):
# load symbol and testing data
if has_rpn:
sym = get_vgg_test()
config.TEST.HAS_RPN = True
config.TEST.RPN_PRE_NMS_TOP_N = 6000
config.TEST.RPN_POST_NMS_TOP_N = 300
voc, roidb = load_gt_roidb(imageset, year, root_path, devkit_path)
else:
sym = get_vgg_rcnn_test()
voc, roidb = eval('load_test_' + proposal + '_roidb')(imageset, year, root_path, devkit_path)
# get test data iter
test_data = ROIIter(roidb, batch_size=1, shuffle=False, mode='test')
# load model
args, auxs, _ = load_param(prefix, epoch, convert=True, ctx=ctx)
# detect
detector = Detector(sym, ctx, args, auxs)
pred_eval(detector, test_data, voc, vis=vis)
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr,
lr_step):
mx.random.seed(3)
np.random.seed(3)
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
config['final_output_path'] = final_output_path
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
feat_pyramid_level = np.log2(config.network.RPN_FEAT_STRIDE).astype(int)
feat_sym = [
sym.get_internals()['rpn_cls_score_p' + str(x) + '_output']
for x in feat_pyramid_level
]
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
#leonid: adding semicolumn ";" support to allow several different datasets to be merged
datasets = config.dataset.dataset.split(';')
image_sets = config.dataset.image_set.split(';')
data_paths = config.dataset.dataset_path.split(';')
if type(config.dataset.per_category_epoch_max) is str:
per_category_epoch_max = [
float(x) for x in config.dataset.per_category_epoch_max.split(';')
]
else:
per_category_epoch_max = [float(config.dataset.per_category_epoch_max)]
roidbs = []
categ_index_offs = 0
if 'classes_list_fname' not in config.dataset:
classes_list_fname = ''
else:
classes_list_fname = config.dataset.classes_list_fname
if 'num_ex_per_class' not in config.dataset:
num_ex_per_class = ''
else:
num_ex_per_class = config.dataset.num_ex_per_class
for iD, dataset in enumerate(datasets):
# load dataset and prepare imdb for training
image_sets_cur = [iset for iset in image_sets[iD].split('+')]
for image_set in image_sets_cur:
cur_roidb, cur_num_classes = load_gt_roidb(
dataset,
image_set,
config.dataset.root_path,
data_paths[iD],
flip=config.TRAIN.FLIP,
per_category_epoch_max=per_category_epoch_max[iD],
return_num_classes=True,
categ_index_offs=categ_index_offs,
classes_list_fname=classes_list_fname,
num_ex_per_class=num_ex_per_class)
roidbs.append(cur_roidb)
categ_index_offs += cur_num_classes
# roidbs.extend([
# load_gt_roidb(
# dataset,
# image_set,
# config.dataset.root_path,
# data_paths[iD],
# flip=config.TRAIN.FLIP,
# per_category_epoch_max=per_category_epoch_max[iD])
# for image_set in image_sets])
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
train_data = PyramidAnchorIterator(
feat_sym,
roidb,
config,
batch_size=input_batch_size,
shuffle=config.TRAIN.SHUFFLE,
ctx=ctx,
feat_strides=config.network.RPN_FEAT_STRIDE,
anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS,
aspect_grouping=config.TRAIN.ASPECT_GROUPING,
allowed_border=np.inf)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print 'providing maximum shape', max_data_shape, max_label_shape
if not config.network.base_net_lock:
data_shape_dict = dict(train_data.provide_data_single +
train_data.provide_label_single)
else:
data_shape_dict = dict(train_data.provide_data_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
sym_instance.init_weight(config, arg_params, aux_params)
if config.TRAIN.LOAD_EMBEDDING:
import cPickle
with open(config.TRAIN.EMBEDDING_FNAME, 'rb') as fid:
model_data = cPickle.load(fid)
for fcn in ['1', '2', '3']:
layer = model_data['dense_' + fcn]
weight = ListList2ndarray(layer[0])
bias = mx.nd.array(layer[1])
arg_params['embed_dense_' + fcn + '_weight'] = weight
arg_params['embed_dense_' + fcn + '_bias'] = bias
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params,
data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
alt_fixed_param_prefix = config.network.ALT_FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
if not config.network.base_net_lock:
label_names = [k[0] for k in train_data.provide_label_single]
else:
label_names = []
mod = MutableModule(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)],
fixed_param_prefix=fixed_param_prefix,
alt_fixed_param_prefix=alt_fixed_param_prefix)
# Leonid: Comment out the following two lines if switching to smaller number of GPUs and resuming training, then after it starts running un-comment back
# if config.TRAIN.RESUME:
# mod._preload_opt_states = '%s-%04d.states'%(prefix, begin_epoch)
#TODO: release this.
# decide training params
# metric
if not config.network.base_net_lock:
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
rpn_fg_metric = metric.RPNFGFraction(config)
eval_metric = metric.RCNNAccMetric(config)
eval_fg_metric = metric.RCNNFGAccuracy(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
if not config.network.base_net_lock:
all_child_metrics = [
rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, rpn_fg_metric,
eval_fg_metric, eval_metric, cls_metric, bbox_metric
]
else:
all_child_metrics = [
rpn_fg_metric, eval_fg_metric, eval_metric, cls_metric, bbox_metric
]
# all_child_metrics = [rpn_eval_metric, rpn_bbox_metric, rpn_fg_metric, eval_fg_metric, eval_metric, cls_metric, bbox_metric]
################################################
### added / updated by Leonid to support oneshot
################################################
if config.network.EMBEDDING_DIM != 0:
if config.network.EMBED_LOSS_ENABLED:
all_child_metrics += [
metric.RepresentativesMetric(config, final_output_path)
] # moved from above. JS.
all_child_metrics += [metric.EmbedMetric(config)]
if config.network.BG_REPS:
all_child_metrics += [metric.BGModelMetric(config)]
if config.network.REPS_CLS_LOSS:
all_child_metrics += [metric.RepsCLSMetric(config)]
if config.network.ADDITIONAL_LINEAR_CLS_LOSS:
all_child_metrics += [metric.RCNNLinLogLossMetric(config)]
if config.network.VAL_FILTER_REGRESS:
all_child_metrics += [metric.ValRegMetric(config)]
if config.network.SCORE_HIST_REGRESS:
all_child_metrics += [metric.ScoreHistMetric(config)]
################################################
for child_metric in all_child_metrics:
eval_metrics.add(child_metric)
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size,
frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [
mx.callback.module_checkpoint(mod,
prefix,
period=1,
save_optimizer_states=True),
callback.do_checkpoint(prefix, means, stds)
]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor,
config.TRAIN.warmup,
config.TRAIN.warmup_lr,
config.TRAIN.warmup_step)
# optimizer
optimizer_params = {
'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'clip_gradient': None
}
#
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
if args.debug == 1:
import copy
arg_params_ = copy.deepcopy(arg_params)
aux_params_ = copy.deepcopy(aux_params)
# train
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=config.default.kvstore,
optimizer='sgd',
optimizer_params=optimizer_params,
arg_params=arg_params,
aux_params=aux_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch,
config=config)
if args.debug == 1:
t = dictCompare(aux_params_, aux_params)
t = dictCompare(arg_params_, arg_params)
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr, lr_step):
np.random.seed(0)
mx.random.seed(0)
logger, final_output_path = create_logger(config.output_path, args.cfg, config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'), final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [load_gt_roidb(config.dataset.dataset, image_set, config.dataset.root_path, config.dataset.dataset_path,
flip=config.TRAIN.FLIP)
for image_set in image_sets]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
train_data = AnchorLoader(feat_sym, roidb, config, batch_size=input_batch_size, shuffle=config.TRAIN.SHUFFLE, ctx=ctx,
feat_stride=config.network.RPN_FEAT_STRIDE, anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS, aspect_grouping=config.TRAIN.ASPECT_GROUPING)
# infer max shape
# max_dats_shape=['data', (1,3,600,1000)]
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3, max([v[0] for v in config.SCALES]), max([v[1] for v in config.SCALES])))]
# max_data_shape=[], max_lable_shape=[]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
logger.info('providing maximum shape'+str(max_data_shape)+" "+str(max_label_shape))
data_shape_dict = dict(train_data.provide_data_single + train_data.provide_label_single)
# add by chaojie
logger.info("data_sahpe_dict:\n{}".format(pprint.pformat(data_shape_dict)))
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
pprint.pprint(sym_instance.arg_shape_dict)
logger.info("sym_instance.arg_shape_dict\n")
logging.info(pprint.pformat(sym_instance.arg_shape_dict))
#dot = mx.viz.plot_network(sym, node_attrs={'shape': 'rect', 'fixedsize': 'false'})
#dot.render(os.path.join('./output/rcnn/network_vis', config.symbol + '_rcnn'))
# load and initialize params
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params, data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
mod = MutableModule(sym, data_names=data_names, label_names=label_names,
logger=logger, context=ctx, max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)], fixed_param_prefix=fixed_param_prefix)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states'%(prefix, begin_epoch)
# decide training params
# metric
eval_metric = metric.RCNNAccMetric(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
if config.TRAIN.JOINT_TRAINING or (not config.TRAIN.LEARN_NMS):
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
for child_metric in [rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric]:
eval_metrics.add(child_metric)
for child_metric in [eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
if config.TRAIN.LEARN_NMS:
eval_metrics.add(metric.NMSLossMetric(config, 'pos'))
eval_metrics.add(metric.NMSLossMetric(config, 'neg'))
eval_metrics.add(metric.NMSAccMetric(config))
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size, frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS), 2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS), 2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [mx.callback.module_checkpoint(mod, prefix, period=1, save_optimizer_states=True),
callback.do_checkpoint(prefix, means, stds)]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch]
lr = base_lr * (lr_factor ** (len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor, config.TRAIN.warmup, config.TRAIN.warmup_lr, config.TRAIN.warmup_step)
# optimizer
optimizer_params = {'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
mod.fit(train_data, eval_metric=eval_metrics, epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback, kvstore=config.default.kvstore,
optimizer='sgd', optimizer_params=optimizer_params,
arg_params=arg_params, aux_params=aux_params, begin_epoch=begin_epoch, num_epoch=end_epoch)
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr,
lr_step):
# 创建logger和对应的输出路径
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
# 特征symbol，从网络sym中获取rpn_cls_score_output
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup multi-gpu
# 使能多GPU训练，每一张卡训练一个batch
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
# 加载数据集同时准备训练的imdb，使用+分割不同的图像数据集，比如2007_trainval+2012_trainval
image_sets = [iset for iset in config.dataset.image_set.split('+')]
# load gt roidb加载gt roidb，根据数据集类型，图像集具体子类，数据集根目录和数据集路径，同时配置相关TRAIN为FLIP来增广数据
roidbs = [
load_gt_roidb(config.dataset.dataset,
image_set,
config.dataset.root_path,
config.dataset.dataset_path,
flip=config.TRAIN.FLIP) for image_set in image_sets
]
# 合并不同的roidb
roidb = merge_roidb(roidbs)
# 根据配置文件中对应的过滤规则来滤出roi
roidb = filter_roidb(roidb, config)
# load training data
# 加载训练数据，anchor Loader为对应分类和回归的锚点加载，通过对应的roidb，查找对应的正负样本的锚点，该生成器需要参数锚点尺度，ratios和对应的feature的stride
train_data = AnchorLoader(feat_sym,
roidb,
config,
batch_size=input_batch_size,
shuffle=config.TRAIN.SHUFFLE,
ctx=ctx,
feat_stride=config.network.RPN_FEAT_STRIDE,
anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS,
aspect_grouping=config.TRAIN.ASPECT_GROUPING)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print('providing maximum shape', max_data_shape, max_label_shape)
data_shape_dict = dict(train_data.provide_data_single +
train_data.provide_label_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
# 加载并且初始化参数，如果训练中是继续上次的训练，也就是RESUME这一flag设置为True
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
# 从前缀和being_epoch中加载RESUME的arg参数和aux参数，同时需要转换为GPU NDArray
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
# 检查相关参数的shapes
sym_instance.check_parameter_shapes(arg_params, aux_params,
data_shape_dict)
# create solver
# 创造求解器
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
mod = MutableModule(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)],
fixed_param_prefix=fixed_param_prefix)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states' % (prefix, begin_epoch)
# decide training params
# metric
# 以下主要是RPN和RCNN相关的一些评价指标
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
eval_metric = metric.RCNNAccMetric(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
# mxnet中合成的评估指标，可以增加以上所有的评估指标，包括rpn_eval_metrix、rpn_cls_metric、rpn_bbox_metric和rcnn_eval_metric、rcnn_cls_metric、rcnn_bbox_metric
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
for child_metric in [
rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric,
cls_metric, bbox_metric
]:
eval_metrics.add(child_metric)
# callback
# batch后的callback回调以及epoch后的callback回调
# batch_end_callback是在训练一定batch_size后进行的相应回调，回调频率为frequent
batch_end_callback = callback.Speedometer(train_data.batch_size,
frequent=args.frequent)
# means和stds，如果BBOX是类无关的，那么means为复制means两个，否则复制数量为NUM_CLASSES
means = np.tile(np.array(config.TRAIN.BBOX_MEANS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
# epoch为一个周期结束后的回调
epoch_end_callback = [
mx.callback.module_checkpoint(mod,
prefix,
period=1,
save_optimizer_states=True),
callback.do_checkpoint(prefix, means, stds)
]
# decide learning rate
# 以下主要根据不同的学习率调整策略来决定学习率，这里如voc中默认的初始lr为0.0005
base_lr = lr
# 学习率调整因子
lr_factor = config.TRAIN.lr_factor
# 学习率调整周期，lr_step一般格式为3, 5，表示在3和5周期中进行学习率调整
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
# 如果当前周期大于begin_epoch那么lr_epoch_diff为epoch-begin_epoch
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
print('lr_epoch', lr_epoch, 'begin_epoch', begin_epoch)
# 通过当前的epoch来计算当前应该具有的lr
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
# learning rate调整机制，warmup multi factor scheduler预训练多因子调整器
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor,
config.TRAIN.warmup,
config.TRAIN.warmup_lr,
config.TRAIN.warmup_step)
# optimizer
# 优化器参数，包含momentum、wd、lr、lr_scheduler、rescale_grad和clip_gradient
optimizer_params = {
'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None
}
if not isinstance(train_data, PrefetchingIter):
print('!!!train_data is not PrefetchingIter!!!')
train_data = PrefetchingIter(train_data)
# train
# 模型训练过程，输入train_data，评估指标包括eval_metrics等一系列指标，每一个epoch结束后进入epoch_end_callback，每一个batch结束后进入batch_end_callback，优化器使用sgd，同时优化参数、输入参数和辅助参数以及begin周期和end周期
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=config.default.kvstore,
optimizer='sgd',
optimizer_params=optimizer_params,
arg_params=arg_params,
aux_params=aux_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch)
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr,
lr_step):
mx.random.seed(3)
np.random.seed(3)
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = detnet.detnet()
sym = sym_instance.get_symbol(config, is_train=True)
feat_pyramid_level = np.log2(config.network.RPN_FEAT_STRIDE).astype(int)
feat_sym = [
sym.get_internals()['rpn_cls_score_p' + str(x) + '_output']
for x in feat_pyramid_level
]
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [
load_gt_roidb(config.dataset.dataset,
image_set,
config.dataset.root_path,
config.dataset.dataset_path,
flip=config.TRAIN.FLIP) for image_set in image_sets
]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
train_data = PyramidAnchorIterator(
feat_sym,
roidb,
config,
batch_size=input_batch_size,
shuffle=config.TRAIN.SHUFFLE,
ctx=ctx,
feat_strides=config.network.RPN_FEAT_STRIDE,
anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS,
aspect_grouping=config.TRAIN.ASPECT_GROUPING,
allowed_border=np.inf)
max_data_shape = [('data',
(config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([int(v[1] // 16 * 16) for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print('providing maximum shape', max_data_shape, max_label_shape)
data_shape_dict = dict(train_data.provide_data + train_data.provide_label)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = None, None
#sym_instance.init_weight(config, arg_params, aux_params)
#sym_instance.check_parameter_shapes(arg_params, aux_params, data_shape_dict)
data_names = [k[0] for k in train_data.provide_data]
label_names = [k[0] for k in train_data.provide_label]
mod = mx.mod.Module(sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx)
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
rpn_fg_metric = metric.RPNFGFraction(config)
eval_metric = metric.RCNNAccMetric(config)
eval_fg_metric = metric.RCNNFGAccuracy(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
for child_metric in [
rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, rpn_fg_metric,
eval_fg_metric, eval_metric, cls_metric, bbox_metric
]:
eval_metrics.add(child_metric)
batch_end_callback = [
mx.callback.Speedometer(train_data.batch_size,
frequent=1,
auto_reset=False)
]
epoch_end_callback = [mx.callback.do_checkpoint(prefix, period=1)]
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = mx.lr_scheduler.MultiFactorScheduler(step=lr_iters,
factor=lr_factor)
optimizer_params = {
"momentum": config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'clip_gradient': None
}
if not isinstance(train_data, mx.io.PrefetchingIter):
train_data = mx.io.PrefetchingIter(train_data)
if DEBUG:
train_data.reset()
it = train_data.next()
mod.bind(data_shapes=train_data.provide_data,
label_shapes=train_data.provide_label,
for_training=True,
force_rebind=False)
mod.init_params(arg_params=arg_params,
aux_params=aux_params,
allow_missing=True)
mod.init_optimizer(optimizer_params=optimizer_params)
eval_metrics.reset()
next_data_batch = train_data.next()
for i in range(100):
print(i)
mod.forward_backward(next_data_batch)
mod.update()
mod.update_metric(eval_metrics, next_data_batch.label)
print(eval_metrics)
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
optimizer='sgd',
optimizer_params=optimizer_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch)
def train_rpn(image_set, year, root_path, devkit_path, pretrained, epoch,
prefix, ctx, begin_epoch, end_epoch, frequent, kv_store, work_load_list=None, resume=False):
# set up logger
logger = logging.getLogger()
logger.setLevel(logging.INFO)
# load symbol
sym = get_vgg_rpn()
feat_sym = get_vgg_rpn().get_internals()['rpn_cls_score_output']
# setup multi-gpu
config.TRAIN.BATCH_IMAGES *= len(ctx)
config.TRAIN.BATCH_SIZE *= len(ctx)
# load training data
voc, roidb = load_gt_roidb(image_set, year, root_path, devkit_path, flip=True)
train_data = AnchorLoader(feat_sym, roidb, batch_size=config.TRAIN.BATCH_SIZE, shuffle=True, mode='train',
ctx=ctx, work_load_list=work_load_list)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_SIZE, 3, 1000, 1000))]
max_data_shape_dict = {k: v for k, v in max_data_shape}
_, feat_shape, _ = feat_sym.infer_shape(**max_data_shape_dict)
from rcnn.minibatch import assign_anchor
import numpy as np
label = assign_anchor(feat_shape[0], np.zeros((0, 5)), [[1000, 1000, 1.0]])
max_label_shape = [('label', label['label'].shape),
('bbox_target', label['bbox_target'].shape),
('bbox_inside_weight', label['bbox_inside_weight'].shape),
('bbox_outside_weight', label['bbox_outside_weight'].shape)]
print 'providing maximum shape', max_data_shape, max_label_shape
# load pretrained
args, auxs = load_param(pretrained, epoch, convert=True)
# initialize params
if not resume:
input_shapes = {k: v for k, v in train_data.provide_data + train_data.provide_label}
arg_shape, _, _ = sym.infer_shape(**input_shapes)
arg_shape_dict = dict(zip(sym.list_arguments(), arg_shape))
args['rpn_conv_3x3_weight'] = mx.random.normal(0, 0.01, shape=arg_shape_dict['rpn_conv_3x3_weight'])
args['rpn_conv_3x3_bias'] = mx.nd.zeros(shape=arg_shape_dict['rpn_conv_3x3_bias'])
args['rpn_cls_score_weight'] = mx.random.normal(0, 0.01, shape=arg_shape_dict['rpn_cls_score_weight'])
args['rpn_cls_score_bias'] = mx.nd.zeros(shape=arg_shape_dict['rpn_cls_score_bias'])
args['rpn_bbox_pred_weight'] = mx.random.normal(0, 0.01, shape=arg_shape_dict['rpn_bbox_pred_weight'])
args['rpn_bbox_pred_bias'] = mx.nd.zeros(shape=arg_shape_dict['rpn_bbox_pred_bias'])
# prepare training
if config.TRAIN.FINETUNE:
fixed_param_prefix = ['conv1', 'conv2', 'conv3', 'conv4', 'conv5']
else:
fixed_param_prefix = ['conv1', 'conv2']
data_names = [k[0] for k in train_data.provide_data]
label_names = [k[0] for k in train_data.provide_label]
batch_end_callback = Speedometer(train_data.batch_size, frequent=frequent)
epoch_end_callback = mx.callback.do_checkpoint(prefix)
if config.TRAIN.HAS_RPN is True:
eval_metric = AccuracyMetric(use_ignore=True, ignore=-1)
cls_metric = LogLossMetric(use_ignore=True, ignore=-1)
else:
eval_metric = AccuracyMetric()
cls_metric = LogLossMetric()
bbox_metric = SmoothL1LossMetric()
eval_metrics = mx.metric.CompositeEvalMetric()
for child_metric in [eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
optimizer_params = {'momentum': 0.9,
'wd': 0.0005,
'learning_rate': 0.001,
'lr_scheduler': mx.lr_scheduler.FactorScheduler(60000, 0.1),
'rescale_grad': (1.0 / config.TRAIN.BATCH_SIZE)}
# train
mod = MutableModule(sym, data_names=data_names, label_names=label_names,
logger=logger, context=ctx, work_load_list=work_load_list,
max_data_shapes=max_data_shape, max_label_shapes=max_label_shape,
fixed_param_prefix=fixed_param_prefix)
mod.fit(train_data, eval_metric=eval_metrics, epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback, kvstore=kv_store,
optimizer='sgd', optimizer_params=optimizer_params,
arg_params=args, aux_params=auxs, begin_epoch=begin_epoch, num_epoch=end_epoch)
def train_rpn(cfg,
dataset,
image_set,
root_path,
dataset_path,
frequent,
kvstore,
flip,
shuffle,
resume,
ctx,
pretrained,
epoch,
prefix,
begin_epoch,
end_epoch,
train_shared,
lr,
lr_step,
logger=None,
output_path=None):
# set up logger
if not logger:
logging.basicConfig()
logger = logging.getLogger()
logger.setLevel(logging.INFO)
# set up config
cfg.TRAIN.BATCH_IMAGES = cfg.TRAIN.ALTERNATE.RPN_BATCH_IMAGES
# load symbol
sym_instance = eval(cfg.symbol + '.' + cfg.symbol)()
sym = sym_instance.get_symbol_rpn(cfg, is_train=True)
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = cfg.TRAIN.BATCH_IMAGES * batch_size
# print cfg
pprint.pprint(cfg)
logger.info('training rpn cfg:{}\n'.format(pprint.pformat(cfg)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in image_set.split('+')]
roidbs = [
load_gt_roidb(dataset,
image_set,
root_path,
dataset_path,
result_path=output_path,
flip=flip) for image_set in image_sets
]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, cfg)
# load training data
train_data = AnchorLoader(feat_sym,
roidb,
cfg,
batch_size=input_batch_size,
shuffle=shuffle,
ctx=ctx,
feat_stride=cfg.network.RPN_FEAT_STRIDE,
anchor_scales=cfg.network.ANCHOR_SCALES,
anchor_ratios=cfg.network.ANCHOR_RATIOS,
aspect_grouping=cfg.TRAIN.ASPECT_GROUPING)
# infer max shape
max_data_shape = [('data', (cfg.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in cfg.SCALES]),
max([v[1] for v in cfg.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
print('providing maximum shape', max_data_shape, max_label_shape)
# infer shape
data_shape_dict = dict(train_data.provide_data_single +
train_data.provide_label_single)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if resume:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
sym_instance.init_weight_rpn(cfg, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params,
data_shape_dict)
# create solver
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
if train_shared:
fixed_param_prefix = cfg.network.FIXED_PARAMS_SHARED
else:
fixed_param_prefix = cfg.network.FIXED_PARAMS
mod = MutableModule(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in xrange(batch_size)],
max_label_shapes=[max_label_shape for _ in xrange(batch_size)],
fixed_param_prefix=fixed_param_prefix)
# decide training params
# metric
eval_metric = metric.RPNAccMetric()
cls_metric = metric.RPNLogLossMetric()
bbox_metric = metric.RPNL1LossMetric()
eval_metrics = mx.metric.CompositeEvalMetric()
for child_metric in [eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size,
frequent=frequent)
# epoch_end_callback = mx.callback.do_checkpoint(prefix)
epoch_end_callback = mx.callback.module_checkpoint(
mod, prefix, period=1, save_optimizer_states=True)
# decide learning rate
base_lr = lr
lr_factor = cfg.TRAIN.lr_factor
lr_epoch = [int(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor,
cfg.TRAIN.warmup,
cfg.TRAIN.warmup_lr,
cfg.TRAIN.warmup_step)
# optimizer
optimizer_params = {
'momentum': cfg.TRAIN.momentum,
'wd': cfg.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None
}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=kvstore,
optimizer='sgd',
optimizer_params=optimizer_params,
arg_params=arg_params,
aux_params=aux_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch)
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr,
lr_step):
mx.random.seed(3)
np.random.seed(3)
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
feat_pyramid_level = np.log2(config.network.RPN_FEAT_STRIDE).astype(int)
feat_sym = [
sym.get_internals()['rpn_cls_score_p' + str(x) + '_output']
for x in feat_pyramid_level
]
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [
load_gt_roidb(config.dataset.dataset,
image_set,
config.dataset.root_path,
config.dataset.dataset_path,
flip=config.TRAIN.FLIP) for image_set in image_sets
]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
train_data = PyramidAnchorIterator(
feat_sym,
roidb,
config,
batch_size=input_batch_size,
shuffle=config.TRAIN.SHUFFLE,
ctx=ctx,
feat_strides=config.network.RPN_FEAT_STRIDE,
anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS,
aspect_grouping=config.TRAIN.ASPECT_GROUPING,
allowed_border=np.inf)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print 'providing maximum shape', max_data_shape, max_label_shape
data_shape_dict = dict(train_data.provide_data_single +
train_data.provide_label_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
# sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
# sym_instance.check_parameter_shapes(arg_params, aux_params, data_shape_dict)
# decide training params
# metric
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
rpn_fg_metric = metric.RPNFGFraction(config)
eval_metric = metric.RCNNAccMetric(config)
eval_fg_metric = metric.RCNNFGAccuracy(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
for child_metric in [
rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, rpn_fg_metric,
eval_fg_metric, eval_metric, cls_metric, bbox_metric
]:
eval_metrics.add(child_metric)
# callback
# batch_end_callback = callback.Speedometer(train_data.batch_size, frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
# epoch_end_callback = [mx.callback.module_checkpoint(mod, prefix, period=1,
# save_optimizer_states=True), callback.do_checkpoint(prefix, means, stds)]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor,
config.TRAIN.warmup,
config.TRAIN.warmup_lr,
config.TRAIN.warmup_step)
# optimizer
optimizer_params = {
'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'clip_gradient': None
}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
net = FPNNet(sym, args_pretrained=arg_params, auxes_pretrained=aux_params)
# create multi-threaded DataParallel Model.
net_parallel = DataParallelModel(net, ctx_list=ctx)
# create trainer,
# !Important: A trainer can be only created after the function `resnet_ctx` is called.
# Please Note that DataParallelModel will call reset_ctx to initialize parameters on gpus.
trainer = mx.gluon.Trainer(net.collect_params(), 'sgd', optimizer_params)
for epoch in range(begin_epoch, config.TRAIN.end_epoch):
train_data.reset()
net.hybridize(static_alloc=True, static_shape=False)
progress_bar = tqdm.tqdm(total=len(roidb))
for nbatch, data_batch in enumerate(train_data):
inputs = [[
x.astype('f').as_in_context(c) for x in d + l
] for c, d, l in zip(ctx, data_batch.data, data_batch.label)]
with ag.record():
outputs = net_parallel(*inputs)
ag.backward(sum(outputs, ()))
trainer.step(1)
eval_metrics.update(data_batch.label[0], outputs[0])
if nbatch % 100 == 0:
msg = ','.join([
'{}={:.3f}'.format(w, v)
for w, v in zip(*eval_metrics.get())
])
msg += ",lr={}".format(trainer.learning_rate)
logger.info(msg)
print(msg)
eval_metrics.reset()
progress_bar.update(len(inputs))
progress_bar.close()
net.hybridize(static_alloc=True, static_shape=False)
re = ("mAP", 0.0)
logger.info(re)
save_path = "{}-{}-{}.params".format(prefix, epoch, re[1])
net.collect_params().save(save_path)
logger.info("Saved checkpoint to {}.".format(save_path))
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr, lr_step):
if config.dataset.dataset != 'JSONList':
logger, final_output_path = create_logger(config.output_path, args.cfg, config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
shutil.copy2(args.cfg, prefix+'.yaml')
else:
import datetime
import logging
final_output_path = config.output_path
prefix = prefix + '_' + datetime.datetime.now().strftime("%Y-%m-%d_%H_%M_%S")
prefix = os.path.join(final_output_path, prefix)
shutil.copy2(args.cfg, prefix+'.yaml')
log_file = prefix + '.log'
head = '%(asctime)-15s %(message)s'
logging.basicConfig(filename=log_file, format=head)
logger = logging.getLogger()
logger.setLevel(logging.INFO)
logger.info('prefix: %s' % prefix)
print('prefix: %s' % prefix)
# load symbol
#shutil.copy2(os.path.join(curr_path, '..', 'symbols', config.symbol + '.py'), final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
# setup multi-gpu
batch_size = config.TRAIN.IMAGES_PER_GPU * len(ctx)
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [load_gt_roidb(config.dataset.dataset, image_set, config.dataset.root_path, config.dataset.dataset_path,
flip=config.TRAIN.FLIP)
for image_set in image_sets]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
if config.network.MULTI_RPN:
assert Fasle, 'still developing' ###
num_layers = len(config.network.MULTI_RPN_STRIDES)
rpn_syms = [sym.get_internals()['rpn%d_cls_score_output'% l] for l in range(num_layers)]
train_data = PyramidAnchorLoader(rpn_syms, roidb, config, batch_size=batch_size, shuffle=config.TRAIN.SHUFFLE,
ctx=ctx, feat_strides=config.network.MULTI_RPN_STRIDES, anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS, aspect_grouping=config.TRAIN.ASPECT_GROUPING,
allowed_border=np.inf)
else:
feat_sym = sym.get_internals()['rpn_cls_score_output']
train_data = AnchorLoader(feat_sym, roidb, config, batch_size=batch_size, shuffle=config.TRAIN.SHUFFLE, ctx=ctx,
feat_stride=config.network.RPN_FEAT_STRIDE, anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS, aspect_grouping=config.TRAIN.ASPECT_GROUPING)
# infer max shape
data_shape_dict = dict(train_data.provide_data + train_data.provide_label)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params, data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
mod = MutableModule(sym,
train_data.data_names,
train_data.label_names,
context=ctx,
logger=logger,
fixed_param_prefix=fixed_param_prefix)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states'%(prefix, begin_epoch)
# decide training params
# metric
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
eval_metric = metric.RCNNAccMetric(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
for child_metric in [rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
if config.network.PREDICT_KEYPOINTS:
kps_cls_acc = metric.KeypointAccMetric(config)
kps_cls_loss = metric.KeypointLogLossMetric(config)
kps_pos_loss = metric.KeypointL1LossMetric(config)
eval_metrics.add(kps_cls_acc)
eval_metrics.add(kps_cls_loss)
eval_metrics.add(kps_pos_loss)
# callback
batch_end_callback = callback.Speedometer(batch_size, frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS), 2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS), 2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [mx.callback.do_checkpoint(prefix)]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch]
lr = base_lr * (lr_factor ** (len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor, config.TRAIN.warmup, config.TRAIN.warmup_lr, config.TRAIN.warmup_step)
# optimizer
optimizer_params = {'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
mod.fit(train_data, eval_metric=eval_metrics, epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback, kvstore=config.TRAIN.kvstore,
optimizer='sgd', optimizer_params=optimizer_params,
arg_params=arg_params, aux_params=aux_params, begin_epoch=begin_epoch, num_epoch=end_epoch)
time.sleep(10)
train_data.iters[0].terminate()
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr, lr_step):
# 创建logger和对应的输出路径
logger, final_output_path = create_logger(config.output_path, args.cfg, config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'), final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
# 特征symbol，从网络sym中获取rpn_cls_score_output
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup multi-gpu
# 使能多GPU训练，每一张卡训练一个batch
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
# 加载数据集同时准备训练的imdb，使用+分割不同的图像数据集，比如2007_trainval+2012_trainval
image_sets = [iset for iset in config.dataset.image_set.split('+')]
# load gt roidb加载gt roidb，根据数据集类型，图像集具体子类，数据集根目录和数据集路径，同时配置相关TRAIN为FLIP来增广数据
roidbs = [load_gt_roidb(config.dataset.dataset, image_set, config.dataset.root_path, config.dataset.dataset_path,
flip=config.TRAIN.FLIP)
for image_set in image_sets]
# 合并不同的roidb
roidb = merge_roidb(roidbs)
# 根据配置文件中对应的过滤规则来滤出roi
roidb = filter_roidb(roidb, config)
# load training data
# 加载训练数据，anchor Loader为对应分类和回归的锚点加载，通过对应的roidb，查找对应的正负样本的锚点，该生成器需要参数锚点尺度，ratios和对应的feature的stride
train_data = AnchorLoader(feat_sym, roidb, config, batch_size=input_batch_size, shuffle=config.TRAIN.SHUFFLE, ctx=ctx,
feat_stride=config.network.RPN_FEAT_STRIDE, anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS, aspect_grouping=config.TRAIN.ASPECT_GROUPING)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3, max([v[0] for v in config.SCALES]), max([v[1] for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print('providing maximum shape', max_data_shape, max_label_shape)
data_shape_dict = dict(train_data.provide_data_single + train_data.provide_label_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params, data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
mod = MutableModule(sym, data_names=data_names, label_names=label_names,
logger=logger, context=ctx, max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)], fixed_param_prefix=fixed_param_prefix)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states'%(prefix, begin_epoch)
# decide training params
# metric
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
eval_metric = metric.RCNNAccMetric(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
for child_metric in [rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size, frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS), 2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS), 2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [mx.callback.module_checkpoint(mod, prefix, period=1, save_optimizer_states=True), callback.do_checkpoint(prefix, means, stds)]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch]
lr = base_lr * (lr_factor ** (len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor, config.TRAIN.warmup, config.TRAIN.warmup_lr, config.TRAIN.warmup_step)
# optimizer
optimizer_params = {'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
mod.fit(train_data, eval_metric=eval_metrics, epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback, kvstore=config.default.kvstore,
optimizer='sgd', optimizer_params=optimizer_params,
arg_params=arg_params, aux_params=aux_params, begin_epoch=begin_epoch, num_epoch=end_epoch)
def train_feature_distance_net(args, ctx, pretrained, pretrained_flow, epoch,
prefix, begin_epoch, end_epoch, lr, lr_step):
# ==============prepare logger==============
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# ==============load symbol==============
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
if config.TRAIN.G_type == 0:
sym = sym_instance.get_train_feature_distance_symbol(config)
elif config.TRAIN.G_type == 1:
sym = sym_instance.get_train_feature_distance_symbol_res(config)
# ==============setup multi-gpu==============
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# ==============print config==============
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# ==============load dataset and prepare imdb for training==============
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [
load_gt_roidb(config.dataset.dataset,
image_set,
config.dataset.root_path,
config.dataset.dataset_path,
flip=config.TRAIN.FLIP) for image_set in image_sets
]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
train_iter = ImagenetVIDIter(roidb, input_batch_size, config,
config.TRAIN.SHUFFLE, ctx)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES]))),
('data_ref', (config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES])))]
print 'providing maximum shape', max_data_shape
data_shape_dict = dict(train_iter.provide_data_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# ==============init params==============
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
# arg_params_flow, aux_params_flow = load_param(pretrained_flow, epoch, convert=True)
# arg_params.update(arg_params_flow)
# aux_params.update(aux_params_flow)
sym_instance.init_weight(config, arg_params, aux_params)
# ==============check parameter shapes==============
# sym_instance.check_parameter_shapes(arg_params, aux_params, data_shape_dict)
# ==============create solver==============
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = train_iter.data_name
label_names = train_iter.label_name
mod = MutableModule(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=None,
fixed_param_prefix=fixed_param_prefix)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states' % (prefix, begin_epoch)
# ==============optimizer==============
optimizer_params = {
'learning_rate': 0.00005,
}
if not isinstance(train_iter, PrefetchingIter):
train_iter = PrefetchingIter(train_iter)
batch_end_callback = callback.Speedometer(train_iter.batch_size,
frequent=args.frequent)
epoch_end_callback = [
mx.callback.module_checkpoint(mod,
prefix,
period=1,
save_optimizer_states=True),
callback.do_checkpoint(prefix)
]
feature_L2_loss = metric.FeatureL2LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
eval_metrics.add(feature_L2_loss)
mod.fit(train_iter,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=config.default.kvstore,
optimizer='RMSprop',
optimizer_params=optimizer_params,
arg_params=arg_params,
aux_params=aux_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch,
initializer=mx.init.Normal(0.02),
allow_missing=True)
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr,
lr_step):
mx.random.seed(3)
np.random.seed(3)
if not os.path.exists(config.output_path):
os.mkdir(config.output_path)
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
feat_pyramid_level = np.log2(config.network.RPN_FEAT_STRIDE).astype(int)
feat_sym = [
sym.get_internals()['rpn_cls_score_p' + str(x) + '_output']
for x in feat_pyramid_level
]
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
#pprint.pprint(config)
#logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [
load_gt_roidb(config.dataset.dataset,
image_set,
config.dataset.root_path,
config.dataset.dataset_path,
flip=config.TRAIN.FLIP) for image_set in image_sets
]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
train_data = PyramidAnchorIterator(
feat_sym,
roidb,
config,
batch_size=input_batch_size,
shuffle=config.TRAIN.SHUFFLE,
ctx=ctx,
feat_strides=config.network.RPN_FEAT_STRIDE,
anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS,
aspect_grouping=config.TRAIN.ASPECT_GROUPING,
allowed_border=np.inf)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES,
3 * config.CROP_NUM * config.CROP_NUM,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100,
6))) #change gt_boxes to 1,100,6
print 'providing maximum shape', max_data_shape, max_label_shape
data_shape_dict = dict(train_data.provide_data_single +
train_data.provide_label_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
single_shape = arg_params['conv1_weight'].shape
temp_conv1_weight = nd.empty(
(single_shape[0], single_shape[1] * config.CROP_NUM *
config.CROP_NUM, single_shape[2], single_shape[3]),
dtype=arg_params['conv1_weight'].dtype)
for i in range(config.CROP_NUM * config.CROP_NUM):
temp_conv1_weight[:, i * single_shape[1]:(i + 1) *
single_shape[1], :, :] = arg_params[
'conv1_weight'][:, :, :, :]
del arg_params['conv1_weight']
arg_params['conv1_weight'] = temp_conv1_weight
sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params,
data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
mod = MutableModule(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)],
fixed_param_prefix=fixed_param_prefix)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states' % (prefix, begin_epoch)
# decide training params
# metric
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
rpn_fg_metric = metric.RPNFGFraction(config)
eval_metric = metric.RCNNAccMetric(config)
eval_fg_metric = metric.RCNNFGAccuracy(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
#fl_metric = metric.FocalLoss()
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
for child_metric in [
rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, rpn_fg_metric,
eval_fg_metric, eval_metric, cls_metric, bbox_metric
]:
eval_metrics.add(child_metric)
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size,
frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [
mx.callback.module_checkpoint(mod,
prefix,
period=1,
save_optimizer_states=True),
callback.do_checkpoint(prefix, means, stds)
]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor,
config.TRAIN.warmup,
config.TRAIN.warmup_lr,
config.TRAIN.warmup_step)
# optimizer
optimizer_params = {
'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'clip_gradient': None
}
#
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=config.default.kvstore,
optimizer='sgd',
optimizer_params=optimizer_params,
arg_params=arg_params,
aux_params=aux_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch)
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr,
lr_step):
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_retina_symbol(config, is_train=True)
feat_sym = []
feat_sym_p4 = sym.get_internals()['box_pred/p4_output']
feat_sym_p5 = sym.get_internals()['box_pred/p5_output']
feat_sym_p6 = sym.get_internals()['box_pred/p6_output']
feat_sym_p7 = sym.get_internals()['box_pred/p7_output']
feat_sym.append(feat_sym_p4)
feat_sym.append(feat_sym_p5)
feat_sym.append(feat_sym_p6)
feat_sym.append(feat_sym_p7)
#######
feat_stride = []
feat_stride.append(config.network.p4_RPN_FEAT_STRIDE)
feat_stride.append(config.network.p5_RPN_FEAT_STRIDE)
feat_stride.append(config.network.p6_RPN_FEAT_STRIDE)
feat_stride.append(config.network.p7_RPN_FEAT_STRIDE)
anchor_scales = []
anchor_scales.append(config.network.p4_ANCHOR_SCALES)
anchor_scales.append(config.network.p5_ANCHOR_SCALES)
anchor_scales.append(config.network.p6_ANCHOR_SCALES)
anchor_scales.append(config.network.p7_ANCHOR_SCALES)
anchor_ratios = []
anchor_ratios.append(config.network.p4_ANCHOR_RATIOS)
anchor_ratios.append(config.network.p5_ANCHOR_RATIOS)
anchor_ratios.append(config.network.p6_ANCHOR_RATIOS)
anchor_ratios.append(config.network.p7_ANCHOR_RATIOS)
#############
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [
load_gt_roidb(config.dataset.dataset,
image_set,
config.dataset.root_path,
config.dataset.dataset_path,
flip=config.TRAIN.FLIP) for image_set in image_sets
]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
train_data = AnchorLoader(feat_sym,
feat_stride,
anchor_scales,
anchor_ratios,
roidb,
config,
batch_size=input_batch_size,
shuffle=config.TRAIN.SHUFFLE,
ctx=ctx,
aspect_grouping=config.TRAIN.ASPECT_GROUPING)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print 'providing maximum shape', max_data_shape, max_label_shape
# infer max shape
data_shape_dict = dict(train_data.provide_data_single +
train_data.provide_label_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params,
data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
mod = MutableModule(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)],
fixed_param_prefix=fixed_param_prefix)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states' % (prefix, begin_epoch)
# decide training params
# metric
Retina_toal_eval_metric = metric.RetinaToalAccMetric()
Retina_cls_metric = metric.RetinaFocalLossMetric()
Retina_bbox_metric = metric.RetinaL1LossMetric()
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
for child_metric in [
Retina_toal_eval_metric, Retina_cls_metric, Retina_bbox_metric
]:
eval_metrics.add(child_metric)
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size,
frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [
mx.callback.module_checkpoint(mod,
prefix,
period=1,
save_optimizer_states=True),
callback.do_checkpoint(prefix, means, stds)
]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print lr_step.split(',')
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor,
config.TRAIN.warmup,
config.TRAIN.warmup_lr,
config.TRAIN.warmup_step)
# optimizer
optimizer_params = {
'learning_rate': lr,
'wd': 0.0001,
}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
initializer = mx.init.MSRAPrelu(factor_type='out', slope=0)
# adam = mx.optimizer.AdaDelta(rho=0.09, epsilon=1e-14)
#optimizer_params=optimizer_params,
print "-----------------------train--------------------------------"
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=config.default.kvstore,
optimizer='adam',
optimizer_params=optimizer_params,
initializer=initializer,
arg_params=arg_params,
aux_params=aux_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch)
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr, lr_step):
logger, final_output_path = create_logger(config.output_path, args.cfg, config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'), final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [load_gt_roidb(config.dataset.dataset, image_set, config.dataset.root_path, config.dataset.dataset_path,
flip=config.TRAIN.FLIP)
for image_set in image_sets]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
train_data = AnchorLoader(feat_sym, roidb, config, batch_size=input_batch_size, shuffle=config.TRAIN.SHUFFLE, ctx=ctx,
feat_stride=config.network.RPN_FEAT_STRIDE, anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS, aspect_grouping=config.TRAIN.ASPECT_GROUPING)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3, max([v[0] for v in config.SCALES]), max([v[1] for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print 'providing maximum shape', max_data_shape, max_label_shape
data_shape_dict = dict(train_data.provide_data_single + train_data.provide_label_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params, data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
mod = MutableModule(sym, data_names=data_names, label_names=label_names,
logger=logger, context=ctx, max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)], fixed_param_prefix=fixed_param_prefix)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states'%(prefix, begin_epoch)
# decide training params
# metric
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
eval_metric = metric.RCNNAccMetric(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
for child_metric in [rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size, frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS), 2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS), 2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [mx.callback.module_checkpoint(mod, prefix, period=1, save_optimizer_states=True), callback.do_checkpoint(prefix, means, stds)]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch]
lr = base_lr * (lr_factor ** (len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor, config.TRAIN.warmup, config.TRAIN.warmup_lr, config.TRAIN.warmup_step)
# optimizer
optimizer_params = {'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
mod.fit(train_data, eval_metric=eval_metrics, epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback, kvstore=config.default.kvstore,
optimizer='sgd', optimizer_params=optimizer_params,
arg_params=arg_params, aux_params=aux_params, begin_epoch=begin_epoch, num_epoch=end_epoch)
def train_rpn(
image_set,
year,
root_path,
devkit_path,
pretrained,
epoch,
prefix,
ctx,
begin_epoch,
end_epoch,
frequent,
kv_store,
work_load_list=None,
):
# load symbol
sym = get_vgg_rpn()
feat_sym = get_vgg_rpn().get_internals()["rpn_cls_score_output"]
# setup multi-gpu
config.TRAIN.BATCH_IMAGES *= len(ctx)
config.TRAIN.BATCH_SIZE *= len(ctx)
# load training data
voc, roidb = load_gt_roidb(image_set, year, root_path, devkit_path, flip=True)
train_data = AnchorLoader(
feat_sym,
roidb,
batch_size=config.TRAIN.BATCH_SIZE,
shuffle=True,
mode="train",
ctx=ctx,
work_load_list=work_load_list,
)
# infer max shape
max_data_shape = [("data", (1, 3, 1000, 1000))]
max_data_shape_dict = {k: v for k, v in max_data_shape}
_, feat_shape, _ = feat_sym.infer_shape(**max_data_shape_dict)
from rcnn.minibatch import assign_anchor
import numpy as np
label = assign_anchor(feat_shape[0], np.zeros((0, 5)), [[1000, 1000, 1.0]])
max_label_shape = [
("label", label["label"].shape),
("bbox_target", label["bbox_target"].shape),
("bbox_inside_weight", label["bbox_inside_weight"].shape),
("bbox_outside_weight", label["bbox_outside_weight"].shape),
]
print "providing maximum shape", max_data_shape, max_label_shape
# load pretrained
args, auxs = load_param(pretrained, epoch, convert=True)
# initialize params
arg_shape, _, _ = sym.infer_shape(data=(1, 3, 224, 224))
arg_shape_dict = dict(zip(sym.list_arguments(), arg_shape))
args["rpn_conv_3x3_weight"] = mx.random.normal(mean=0, stdvar=0.01, shape=arg_shape_dict["rpn_conv_3x3_weight"])
args["rpn_conv_3x3_bias"] = mx.nd.zeros(shape=arg_shape_dict["rpn_conv_3x3_bias"])
args["rpn_cls_score_weight"] = mx.random.normal(mean=0, stdvar=0.01, shape=arg_shape_dict["rpn_cls_score_weight"])
args["rpn_cls_score_bias"] = mx.nd.zeros(shape=arg_shape_dict["rpn_cls_score_bias"])
args["rpn_bbox_pred_weight"] = mx.random.normal(mean=0, stdvar=0.01, shape=arg_shape_dict["rpn_bbox_pred_weight"])
args["rpn_bbox_pred_bias"] = mx.nd.zeros(shape=arg_shape_dict["rpn_bbox_pred_bias"])
# train
solver = Solver(
prefix,
sym,
ctx,
begin_epoch,
end_epoch,
kv_store,
args,
auxs,
momentum=0.9,
wd=0.0005,
learning_rate=1e-3,
lr_scheduler=mx.lr_scheduler.FactorScheduler(60000, 0.1),
mutable_data_shape=True,
max_data_shape=max_data_shape,
max_label_shape=max_label_shape,
)
solver.fit(train_data, frequent=frequent)
def train_net(args, ctx, pretrained_dir, pretrained_resnet, epoch, prefix,
begin_epoch, end_epoch, lr, lr_step):
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
git_commit_id = commands.getoutput('git rev-parse HEAD')
print("Git commit id:", git_commit_id)
logger.info('Git commit id: {}'.format(git_commit_id))
# load dataset and prepare imdb for training
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [
load_gt_roidb(config.dataset.dataset,
image_set,
config.dataset.root_path,
config.dataset.dataset_path,
motion_iou_path=config.dataset.motion_iou_path,
flip=config.TRAIN.FLIP,
use_philly=args.usePhilly) for image_set in image_sets
]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
train_data = AnchorLoader(feat_sym,
roidb,
config,
batch_size=input_batch_size,
shuffle=config.TRAIN.SHUFFLE,
ctx=ctx,
feat_stride=config.network.RPN_FEAT_STRIDE,
anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS,
aspect_grouping=config.TRAIN.ASPECT_GROUPING,
normalize_target=config.network.NORMALIZE_RPN,
bbox_mean=config.network.ANCHOR_MEANS,
bbox_std=config.network.ANCHOR_STDS)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print('providing maximum shape', max_data_shape, max_label_shape)
data_shape_dict = dict(train_data.provide_data_single +
train_data.provide_label_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
mod = MutableModule(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)],
fixed_param_prefix=fixed_param_prefix)
# load and initialize params
params_loaded = False
if config.TRAIN.RESUME:
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
mod._preload_opt_states = '%s-%04d.states' % (prefix, begin_epoch)
print('continue training from ', begin_epoch)
logger.info('continue training from ', begin_epoch)
params_loaded = True
elif config.TRAIN.AUTO_RESUME:
for cur_epoch in range(end_epoch - 1, begin_epoch, -1):
params_filename = '{}-{:04d}.params'.format(prefix, cur_epoch)
states_filename = '{}-{:04d}.states'.format(prefix, cur_epoch)
if os.path.exists(params_filename) and os.path.exists(
states_filename):
begin_epoch = cur_epoch
arg_params, aux_params = load_param(prefix,
cur_epoch,
convert=True)
mod._preload_opt_states = states_filename
print('auto continue training from {}, {}'.format(
params_filename, states_filename))
logger.info('auto continue training from {}, {}'.format(
params_filename, states_filename))
params_loaded = True
break
if not params_loaded:
arg_params, aux_params = load_param(os.path.join(
pretrained_dir, pretrained_resnet),
epoch,
convert=True)
sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params,
data_shape_dict)
# decide training params
# metric
eval_metric = metric.RCNNAccMetric(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
for child_metric in [eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
if config.TRAIN.JOINT_TRAINING or (not config.TRAIN.LEARN_NMS):
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
for child_metric in [rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric]:
eval_metrics.add(child_metric)
if config.TRAIN.LEARN_NMS:
eval_metrics.add(metric.NMSLossMetric(config, 'pos'))
eval_metrics.add(metric.NMSLossMetric(config, 'neg'))
eval_metrics.add(metric.NMSAccMetric(config))
# callback
batch_end_callback = [
callback.Speedometer(train_data.batch_size, frequent=args.frequent)
]
if config.USE_PHILLY:
total_iter = (end_epoch - begin_epoch) * len(roidb) / input_batch_size
progress_frequent = min(args.frequent * 10, 100)
batch_end_callback.append(
callback.PhillyProgressCallback(total_iter, progress_frequent))
means = np.tile(np.array(config.TRAIN.BBOX_MEANS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [
mx.callback.module_checkpoint(mod,
prefix,
period=1,
save_optimizer_states=True),
callback.do_checkpoint(prefix, means, stds)
]
# decide learning rate
# base_lr = lr * len(ctx) * config.TRAIN.BATCH_IMAGES
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor,
config.TRAIN.warmup,
config.TRAIN.warmup_lr,
config.TRAIN.warmup_step)
# optimizer
optimizer_params = {
'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None
}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=config.default.kvstore,
optimizer='sgd',
optimizer_params=optimizer_params,
arg_params=arg_params,
aux_params=aux_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch)
def train_net(args, ctx, pretrained, epoch, prefix, begin_epoch, end_epoch, lr,
lr_step):
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_symbol(config, is_train=True)
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [
load_gt_roidb(config.dataset.dataset,
image_set,
config.dataset.root_path,
config.dataset.dataset_path,
flip=config.TRAIN.FLIP) for image_set in image_sets
]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
train_data = AnchorLoader(feat_sym,
roidb,
config,
batch_size=input_batch_size,
shuffle=config.TRAIN.SHUFFLE,
ctx=ctx,
feat_stride=config.network.RPN_FEAT_STRIDE,
anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS,
aspect_grouping=config.TRAIN.ASPECT_GROUPING)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print('providing maximum shape', max_data_shape, max_label_shape)
data_shape_dict = dict(train_data.provide_data_single +
train_data.provide_label_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
#if config.TRAIN.RESUME:
# print('continue training from ', begin_epoch)
# arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
#else:
# arg_params, aux_params = load_param(pretrained, epoch, convert=True)
# sym_instance.init_weight(config, arg_params, aux_params)
print('transfer learning...')
# Choose the initialization weights (COCO or UADETRAC or pretrained)
#arg_params, aux_params = load_param('/raid10/home_ext/Deformable-ConvNets/output/rfcn_dcn_Shuo_UADTRAC/resnet_v1_101_voc0712_rfcn_dcn_Shuo_UADETRAC/trainlist_full/rfcn_UADTRAC', 5, convert=True)
#arg_params, aux_params = load_param('/raid10/home_ext/Deformable-ConvNets/model/rfcn_dcn_coco', 0, convert=True)
arg_params, aux_params = load_param(
'/raid10/home_ext/Deformable-ConvNets/output/rfcn_dcn_Shuo_AICity/resnet_v1_101_voc0712_rfcn_dcn_Shuo_AICityVOC1080_FreezeCOCO_rpnOnly_all/1080_all/rfcn_AICityVOC1080_FreezeCOCO_rpnOnly_all',
4,
convert=True)
sym_instance.init_weight_Shuo(config, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params,
data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
mod = MutableModule(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)],
fixed_param_prefix=fixed_param_prefix)
#freeze parameters using fixed_param_names:list of str
para_file = open(
'/raid10/home_ext/Deformable-ConvNets/rfcn/symbols/arg_params.txt')
para_list = [line.split('<')[0] for line in para_file.readlines()]
# para_list.remove('rfcn_cls_weight')
# para_list.remove('rfcn_cls_bias')
# para_list.remove('rfcn_cls_offset_t_weight')
# para_list.remove('rfcn_cls_offset_t_bias')
#
para_list.remove('res5a_branch2b_offset_weight')
para_list.remove('res5a_branch2b_offset_bias')
para_list.remove('res5b_branch2b_offset_weight')
para_list.remove('res5b_branch2b_offset_bias')
para_list.remove('res5c_branch2b_offset_weight')
para_list.remove('res5c_branch2b_offset_bias')
para_list.remove('conv_new_1_weight')
para_list.remove('conv_new_1_bias')
para_list.remove('rfcn_bbox_weight')
para_list.remove('rfcn_bbox_bias')
para_list.remove('rfcn_bbox_offset_t_weight')
para_list.remove('rfcn_bbox_offset_t_bias')
mod = MutableModule_Shuo(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)],
fixed_param_prefix=fixed_param_prefix,
fixed_param_names=para_list)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states' % (prefix, begin_epoch)
# decide training params
# metric
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
eval_metric = metric.RCNNAccMetric(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
for child_metric in [
rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric,
cls_metric, bbox_metric
]:
eval_metrics.add(child_metric)
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size,
frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [
mx.callback.module_checkpoint(mod,
prefix,
period=1,
save_optimizer_states=True),
callback.do_checkpoint(prefix, means, stds)
]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor,
config.TRAIN.warmup,
config.TRAIN.warmup_lr,
config.TRAIN.warmup_step)
# optimizer
optimizer_params = {
'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None
}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=config.default.kvstore,
optimizer='sgd',
optimizer_params=optimizer_params,
arg_params=arg_params,
aux_params=aux_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch)
def end2end_train(image_set, test_image_set, year, root_path, devkit_path, pretrained, epoch, prefix,
ctx, begin_epoch, num_epoch, frequent, kv_store, mom, wd, lr, num_classes, monitor,
work_load_list=None, resume=False, use_flip=True, factor_step=50000):
# set up logger
logger = logging.getLogger()
logger.setLevel(logging.INFO)
mon = None
config.TRAIN.BG_THRESH_HI = 0.5 # TODO(verify)
config.TRAIN.BG_THRESH_LO = 0.0 # TODO(verify)
config.TRAIN.RPN_MIN_SIZE = 16
logging.info('########## TRAIN FASTER-RCNN WITH APPROXIMATE JOINT END2END #############')
config.TRAIN.HAS_RPN = True
config.END2END = 1
config.TRAIN.BBOX_NORMALIZATION_PRECOMPUTED = True
sym = get_faster_rcnn(num_classes=num_classes)
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup multi-gpu
config.TRAIN.IMS_PER_BATCH *= len(ctx)
config.TRAIN.BATCH_SIZE *= len(ctx) # no used here
# infer max shape
max_data_shape = [('data', (config.TRAIN.IMS_PER_BATCH, 3, 1000, 1000))]
max_data_shape_dict = {k: v for k, v in max_data_shape}
_, feat_shape, _ = feat_sym.infer_shape(**max_data_shape_dict)
from rcnn.minibatch import assign_anchor
import numpy as np
label = assign_anchor(feat_shape[0], np.zeros((0, 5)), [[1000, 1000, 1.0]])
max_label_shape = [('label', label['label'].shape),
('bbox_target', label['bbox_target'].shape),
('bbox_inside_weight', label['bbox_inside_weight'].shape),
('bbox_outside_weight', label['bbox_outside_weight'].shape),
('gt_boxes', (config.TRAIN.IMS_PER_BATCH, 5*100))] # assume at most 100 object in image
print 'providing maximum shape', max_data_shape, max_label_shape
# load training data
voc, roidb = load_gt_roidb(image_set, year, root_path, devkit_path, flip=use_flip)
train_data = AnchorLoader(feat_sym, roidb, batch_size=config.TRAIN.IMS_PER_BATCH, shuffle=True, mode='train',
ctx=ctx, work_load_list=work_load_list)
# load pretrained
args, auxs, _ = load_param(pretrained, epoch, convert=True)
# initialize params
if not resume:
del args['fc8_weight']
del args['fc8_bias']
input_shapes = {k: (1,)+ v[1::] for k, v in train_data.provide_data + train_data.provide_label}
arg_shape, _, _ = sym.infer_shape(**input_shapes)
arg_shape_dict = dict(zip(sym.list_arguments(), arg_shape))
args['rpn_conv_3x3_weight'] = mx.random.normal(0, 0.01, shape=arg_shape_dict['rpn_conv_3x3_weight'])
args['rpn_conv_3x3_bias'] = mx.nd.zeros(shape=arg_shape_dict['rpn_conv_3x3_bias'])
args['rpn_cls_score_weight'] = mx.random.normal(0, 0.01, shape=arg_shape_dict['rpn_cls_score_weight'])
args['rpn_cls_score_bias'] = mx.nd.zeros(shape=arg_shape_dict['rpn_cls_score_bias'])
args['rpn_bbox_pred_weight'] = mx.random.normal(0, 0.001, shape=arg_shape_dict['rpn_bbox_pred_weight']) # guarantee not likely explode with bbox_delta
args['rpn_bbox_pred_bias'] = mx.nd.zeros(shape=arg_shape_dict['rpn_bbox_pred_bias'])
args['cls_score_weight'] = mx.random.normal(0, 0.01, shape=arg_shape_dict['cls_score_weight'])
args['cls_score_bias'] = mx.nd.zeros(shape=arg_shape_dict['cls_score_bias'])
args['bbox_pred_weight'] = mx.random.normal(0, 0.01, shape=arg_shape_dict['bbox_pred_weight'])
args['bbox_pred_bias'] = mx.nd.zeros(shape=arg_shape_dict['bbox_pred_bias'])
# prepare training
if config.TRAIN.FINETUNE:
fixed_param_prefix = ['conv1', 'conv2', 'conv3', 'conv4', 'conv5']
else:
fixed_param_prefix = ['conv1', 'conv2']
data_names = [k[0] for k in train_data.provide_data]
label_names = [k[0] for k in train_data.provide_label]
batch_end_callback = Speedometer(train_data.batch_size, frequent=frequent)
epoch_end_callback = do_checkpoint(prefix)
rpn_eval_metric = AccuracyMetric(use_ignore=True, ignore=-1, ex_rpn=True)
rpn_cls_metric = LogLossMetric(use_ignore=True, ignore=-1, ex_rpn=True)
rpn_bbox_metric = SmoothL1LossMetric(ex_rpn=True)
eval_metric = AccuracyMetric()
cls_metric = LogLossMetric()
bbox_metric = SmoothL1LossMetric()
eval_metrics = mx.metric.CompositeEvalMetric()
for child_metric in [rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
optimizer_params = {'momentum': mom,
'wd': wd,
'learning_rate': lr,
'lr_scheduler': mx.lr_scheduler.FactorScheduler(factor_step, 0.1),
'clip_gradient': 1.0,
'rescale_grad': 1.0 }
# 'rescale_grad': (1.0 / config.TRAIN.RPN_BATCH_SIZE)}
# train
mod = MutableModule(sym, data_names=data_names, label_names=label_names,
logger=logger, context=ctx, work_load_list=work_load_list,
max_data_shapes=max_data_shape, max_label_shapes=max_label_shape,
fixed_param_prefix=fixed_param_prefix)
if monitor:
def norm_stat(d):
return mx.nd.norm(d)/np.sqrt(d.size)
mon = mx.mon.Monitor(100, norm_stat)
mod.fit(train_data, eval_metric=eval_metrics, epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback, kvstore=kv_store,
optimizer='sgd', optimizer_params=optimizer_params, monitor=mon,
arg_params=args, aux_params=auxs, begin_epoch=begin_epoch, num_epoch=num_epoch)
def train_rpn(cfg, dataset, image_set, root_path, dataset_path,
frequent, kvstore, flip, shuffle, resume,
ctx, pretrained, epoch, prefix, begin_epoch, end_epoch,
train_shared, lr, lr_step, logger=None, output_path=None):
# set up logger
if not logger:
logging.basicConfig()
logger = logging.getLogger()
logger.setLevel(logging.INFO)
# set up config
cfg.TRAIN.BATCH_IMAGES = cfg.TRAIN.ALTERNATE.RPN_BATCH_IMAGES
# load symbol
sym_instance = eval(cfg.symbol + '.' + cfg.symbol)()
sym = sym_instance.get_symbol_rpn(cfg, is_train=True)
feat_sym = sym.get_internals()['rpn_cls_score_output']
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = cfg.TRAIN.BATCH_IMAGES * batch_size
# print cfg
pprint.pprint(cfg)
logger.info('training rpn cfg:{}\n'.format(pprint.pformat(cfg)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in image_set.split('+')]
roidbs = [load_gt_roidb(dataset, image_set, root_path, dataset_path, result_path=output_path,
flip=flip)
for image_set in image_sets]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, cfg)
# load training data
train_data = AnchorLoader(feat_sym, roidb, cfg, batch_size=input_batch_size, shuffle=shuffle,
ctx=ctx, feat_stride=cfg.network.RPN_FEAT_STRIDE, anchor_scales=cfg.network.ANCHOR_SCALES,
anchor_ratios=cfg.network.ANCHOR_RATIOS, aspect_grouping=cfg.TRAIN.ASPECT_GROUPING)
# infer max shape
max_data_shape = [('data', (cfg.TRAIN.BATCH_IMAGES, 3, max([v[0] for v in cfg.SCALES]), max([v[1] for v in cfg.SCALES])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
print('providing maximum shape', max_data_shape, max_label_shape)
# infer shape
data_shape_dict = dict(train_data.provide_data_single + train_data.provide_label_single)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if resume:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
sym_instance.init_weight_rpn(cfg, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params, data_shape_dict)
# create solver
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
if train_shared:
fixed_param_prefix = cfg.network.FIXED_PARAMS_SHARED
else:
fixed_param_prefix = cfg.network.FIXED_PARAMS
mod = MutableModule(sym, data_names=data_names, label_names=label_names,
logger=logger, context=ctx, max_data_shapes=[max_data_shape for _ in xrange(batch_size)],
max_label_shapes=[max_label_shape for _ in xrange(batch_size)], fixed_param_prefix=fixed_param_prefix)
# decide training params
# metric
eval_metric = metric.RPNAccMetric()
cls_metric = metric.RPNLogLossMetric()
bbox_metric = metric.RPNL1LossMetric()
eval_metrics = mx.metric.CompositeEvalMetric()
for child_metric in [eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size, frequent=frequent)
# epoch_end_callback = mx.callback.do_checkpoint(prefix)
epoch_end_callback = mx.callback.module_checkpoint(mod, prefix, period=1, save_optimizer_states=True)
# decide learning rate
base_lr = lr
lr_factor = cfg.TRAIN.lr_factor
lr_epoch = [int(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch]
lr = base_lr * (lr_factor ** (len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor, cfg.TRAIN.warmup, cfg.TRAIN.warmup_lr, cfg.TRAIN.warmup_step)
# optimizer
optimizer_params = {'momentum': cfg.TRAIN.momentum,
'wd': cfg.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
# train
mod.fit(train_data, eval_metric=eval_metrics, epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback, kvstore=kvstore,
optimizer='sgd', optimizer_params=optimizer_params,
arg_params=arg_params, aux_params=aux_params, begin_epoch=begin_epoch, num_epoch=end_epoch)
def train_net(args, ctx, pretrained, pretrained_flow, epoch, prefix,
begin_epoch, end_epoch, lr, lr_step):
logger, final_output_path = create_logger(config.output_path, args.cfg,
config.dataset.image_set)
prefix = os.path.join(final_output_path, prefix)
# load symbol
shutil.copy2(os.path.join(curr_path, 'symbols', config.symbol + '.py'),
final_output_path)
sym_instance = eval(config.symbol + '.' + config.symbol)()
sym = sym_instance.get_train_symbol(config)
feat_sym = sym.get_internals()['rpn_cls_score_output']
feat_conv_3x3_relu = sym.get_internals()['feat_conv_3x3_relu_output']
# setup multi-gpu
batch_size = len(ctx)
input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
# print config
pprint.pprint(config)
logger.info('training config:{}\n'.format(pprint.pformat(config)))
# load dataset and prepare imdb for training
image_sets = [iset for iset in config.dataset.image_set.split('+')]
roidbs = [
load_gt_roidb(config.dataset.dataset,
image_set,
config.dataset.root_path,
config.dataset.dataset_path,
flip=config.TRAIN.FLIP) for image_set in image_sets
]
roidb = merge_roidb(roidbs)
roidb = filter_roidb(roidb, config)
# load training data
train_data = AnchorLoader(feat_sym,
feat_conv_3x3_relu,
roidb,
config,
batch_size=input_batch_size,
shuffle=config.TRAIN.SHUFFLE,
ctx=ctx,
feat_stride=config.network.RPN_FEAT_STRIDE,
anchor_scales=config.network.ANCHOR_SCALES,
anchor_ratios=config.network.ANCHOR_RATIOS,
aspect_grouping=config.TRAIN.ASPECT_GROUPING,
normalize_target=config.network.NORMALIZE_RPN,
bbox_mean=config.network.ANCHOR_MEANS,
bbox_std=config.network.ANCHOR_STDS)
# infer max shape
#max_data_shape = [('data', (config.TRAIN.BATCH_IMAGES, 3, max([v[0] for v in config.SCALES]), max([v[1] for v in config.SCALES]))),
# ('data_ref', (config.TRAIN.BATCH_IMAGES, 3, max([v[0] for v in config.SCALES]), max([v[1] for v in config.SCALES]))),
# ('eq_flag', (1,))]
data_shape1 = {
'data_ref':
(config.TRAIN.BATCH_IMAGES, 3, max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES])),
}
_, feat_shape111, _ = feat_conv_3x3_relu.infer_shape(**data_shape1)
max_data_shape = [('data_ref', (config.TRAIN.BATCH_IMAGES, 3,
max([v[0] for v in config.SCALES]),
max([v[1] for v in config.SCALES]))),
('eq_flag', (1, )),
('motion_vector', (config.TRAIN.BATCH_IMAGES, 2,
int(feat_shape111[0][2]),
int(feat_shape111[0][3])))]
max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
max_data_shape.append(('gt_boxes', (config.TRAIN.BATCH_IMAGES, 100, 5)))
print 'providing maximum shape', max_data_shape, max_label_shape
data_shape_dict = dict(train_data.provide_data_single +
train_data.provide_label_single)
pprint.pprint(data_shape_dict)
sym_instance.infer_shape(data_shape_dict)
# load and initialize params
if config.TRAIN.RESUME:
print('continue training from ', begin_epoch)
arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
else:
arg_params, aux_params = load_param(pretrained, epoch, convert=True)
#arg_params_flow, aux_params_flow = load_param(pretrained_flow, epoch, convert=True)
#arg_params.update(arg_params_flow)
#aux_params.update(aux_params_flow)
sym_instance.init_weight(config, arg_params, aux_params)
# check parameter shapes
sym_instance.check_parameter_shapes(arg_params, aux_params,
data_shape_dict)
# create solver
fixed_param_prefix = config.network.FIXED_PARAMS
data_names = [k[0] for k in train_data.provide_data_single]
label_names = [k[0] for k in train_data.provide_label_single]
mod = MutableModule(
sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
max_data_shapes=[max_data_shape for _ in range(batch_size)],
max_label_shapes=[max_label_shape for _ in range(batch_size)],
fixed_param_prefix=fixed_param_prefix)
if config.TRAIN.RESUME:
mod._preload_opt_states = '%s-%04d.states' % (prefix, begin_epoch)
# decide training params
# metric
rpn_eval_metric = metric.RPNAccMetric()
rpn_cls_metric = metric.RPNLogLossMetric()
rpn_bbox_metric = metric.RPNL1LossMetric()
eval_metric = metric.RCNNAccMetric(config)
cls_metric = metric.RCNNLogLossMetric(config)
bbox_metric = metric.RCNNL1LossMetric(config)
eval_metrics = mx.metric.CompositeEvalMetric()
# rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric, cls_metric, bbox_metric
for child_metric in [
rpn_eval_metric, rpn_cls_metric, rpn_bbox_metric, eval_metric,
cls_metric, bbox_metric
]:
eval_metrics.add(child_metric)
# callback
batch_end_callback = callback.Speedometer(train_data.batch_size,
frequent=args.frequent)
means = np.tile(np.array(config.TRAIN.BBOX_MEANS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
stds = np.tile(np.array(config.TRAIN.BBOX_STDS),
2 if config.CLASS_AGNOSTIC else config.dataset.NUM_CLASSES)
epoch_end_callback = [
mx.callback.module_checkpoint(mod,
prefix,
period=1,
save_optimizer_states=True),
callback.do_checkpoint(prefix, means, stds)
]
# decide learning rate
base_lr = lr
lr_factor = config.TRAIN.lr_factor
lr_epoch = [float(epoch) for epoch in lr_step.split(',')]
lr_epoch_diff = [
epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch
]
lr = base_lr * (lr_factor**(len(lr_epoch) - len(lr_epoch_diff)))
lr_iters = [
int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff
]
print('lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters)
lr_scheduler = WarmupMultiFactorScheduler(lr_iters, lr_factor,
config.TRAIN.warmup,
config.TRAIN.warmup_lr,
config.TRAIN.warmup_step)
# optimizer
optimizer_params = {
'momentum': config.TRAIN.momentum,
'wd': config.TRAIN.wd,
'learning_rate': lr,
'lr_scheduler': lr_scheduler,
'rescale_grad': 1.0,
'clip_gradient': None
}
if not isinstance(train_data, PrefetchingIter):
train_data = PrefetchingIter(train_data)
print('Start to train model')
# train
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=config.default.kvstore,
optimizer='sgd',
optimizer_params=optimizer_params,
arg_params=arg_params,
aux_params=aux_params,
begin_epoch=begin_epoch,
num_epoch=end_epoch)
def train_rpn(image_set,
year,
root_path,
devkit_path,
pretrained,
epoch,
prefix,
ctx,
begin_epoch,
end_epoch,
frequent,
kv_store,
work_load_list=None,
resume=False):
# set up logger
logger = logging.getLogger()
logger.setLevel(logging.INFO)
# load symbol
sym = get_vgg_rpn()
feat_sym = get_vgg_rpn().get_internals()['rpn_cls_score_output']
# setup multi-gpu
config.TRAIN.BATCH_IMAGES *= len(ctx)
config.TRAIN.BATCH_SIZE *= len(ctx)
# load training data
voc, roidb = load_gt_roidb(image_set,
year,
root_path,
devkit_path,
flip=True)
train_data = AnchorLoader(feat_sym,
roidb,
batch_size=config.TRAIN.BATCH_SIZE,
shuffle=True,
mode='train',
ctx=ctx,
work_load_list=work_load_list)
# infer max shape
max_data_shape = [('data', (config.TRAIN.BATCH_SIZE, 3, 1000, 1000))]
max_data_shape_dict = {k: v for k, v in max_data_shape}
_, feat_shape, _ = feat_sym.infer_shape(**max_data_shape_dict)
from rcnn.minibatch import assign_anchor
import numpy as np
label = assign_anchor(feat_shape[0], np.zeros((0, 5)), [[1000, 1000, 1.0]])
max_label_shape = [
('label', label['label'].shape),
('bbox_target', label['bbox_target'].shape),
('bbox_inside_weight', label['bbox_inside_weight'].shape),
('bbox_outside_weight', label['bbox_outside_weight'].shape)
]
print 'providing maximum shape', max_data_shape, max_label_shape
# load pretrained
args, auxs = load_param(pretrained, epoch, convert=True)
# initialize params
if not resume:
input_shapes = {
k: v
for k, v in train_data.provide_data + train_data.provide_label
}
arg_shape, _, _ = sym.infer_shape(**input_shapes)
arg_shape_dict = dict(zip(sym.list_arguments(), arg_shape))
args['rpn_conv_3x3_weight'] = mx.random.normal(
0, 0.01, shape=arg_shape_dict['rpn_conv_3x3_weight'])
args['rpn_conv_3x3_bias'] = mx.nd.zeros(
shape=arg_shape_dict['rpn_conv_3x3_bias'])
args['rpn_cls_score_weight'] = mx.random.normal(
0, 0.01, shape=arg_shape_dict['rpn_cls_score_weight'])
args['rpn_cls_score_bias'] = mx.nd.zeros(
shape=arg_shape_dict['rpn_cls_score_bias'])
args['rpn_bbox_pred_weight'] = mx.random.normal(
0, 0.01, shape=arg_shape_dict['rpn_bbox_pred_weight'])
args['rpn_bbox_pred_bias'] = mx.nd.zeros(
shape=arg_shape_dict['rpn_bbox_pred_bias'])
# prepare training
if config.TRAIN.FINETUNE:
fixed_param_prefix = ['conv1', 'conv2', 'conv3', 'conv4', 'conv5']
else:
fixed_param_prefix = ['conv1', 'conv2']
data_names = [k[0] for k in train_data.provide_data]
label_names = [k[0] for k in train_data.provide_label]
batch_end_callback = Speedometer(train_data.batch_size, frequent=frequent)
epoch_end_callback = mx.callback.do_checkpoint(prefix)
if config.TRAIN.HAS_RPN is True:
eval_metric = AccuracyMetric(use_ignore=True, ignore=-1)
cls_metric = LogLossMetric(use_ignore=True, ignore=-1)
else:
eval_metric = AccuracyMetric()
cls_metric = LogLossMetric()
bbox_metric = SmoothL1LossMetric()
eval_metrics = mx.metric.CompositeEvalMetric()
for child_metric in [eval_metric, cls_metric, bbox_metric]:
eval_metrics.add(child_metric)
optimizer_params = {
'momentum': 0.9,
'wd': 0.0005,
'learning_rate': 0.001,
'lr_scheduler': mx.lr_scheduler.FactorScheduler(60000, 0.1),
'rescale_grad': (1.0 / config.TRAIN.BATCH_SIZE)
}
# train
mod = MutableModule(sym,
data_names=data_names,
label_names=label_names,
logger=logger,
context=ctx,
work_load_list=work_load_list,
max_data_shapes=max_data_shape,
max_label_shapes=max_label_shape,
fixed_param_prefix=fixed_param_prefix)
mod.fit(train_data,
eval_metric=eval_metrics,
epoch_end_callback=epoch_end_callback,
batch_end_callback=batch_end_callback,
kvstore=kv_store,
optimizer='sgd',
optimizer_params=optimizer_params,
arg_params=args,
aux_params=auxs,
begin_epoch=begin_epoch,
num_epoch=end_epoch)
