def setUp(self):
masks = np.random.uniform(size=(10, 5, 32, 48)) > 0.5
labels = np.ones((10, 5))
self.dataset = TupleDataset(
np.random.uniform(size=(10, 3, 32, 48)),
masks, labels)
self.link = _InstanceSegmentationStubLink(masks, labels)
self.iterator = SerialIterator(
self.dataset, 1, repeat=False, shuffle=False)
self.evaluator = InstanceSegmentationVOCEvaluator(
self.iterator, self.link, label_names=('cls0', 'cls1', 'cls2'))
self.expected_ap = 1
def test_consistency(self):
reporter = chainer.Reporter()
if self.comm.rank == 0:
multi_iterator = SerialIterator(self.dataset,
self.batchsize,
repeat=False,
shuffle=False)
else:
multi_iterator = None
multi_link = _InstanceSegmentationStubLink(self.masks, self.labels,
self.initial_count)
multi_evaluator = InstanceSegmentationVOCEvaluator(
multi_iterator,
multi_link,
label_names=('cls0', 'cls1', 'cls2'),
comm=self.comm)
reporter.add_observer('target', multi_link)
with reporter:
multi_mean = multi_evaluator.evaluate()
if self.comm.rank != 0:
self.assertEqual(multi_mean, {})
return
single_iterator = SerialIterator(self.dataset,
self.batchsize,
repeat=False,
shuffle=False)
single_link = _InstanceSegmentationStubLink(self.masks, self.labels)
single_evaluator = InstanceSegmentationVOCEvaluator(
single_iterator, single_link, label_names=('cls0', 'cls1', 'cls2'))
reporter.add_observer('target', single_link)
with reporter:
single_mean = single_evaluator.evaluate()
self.assertEqual(set(multi_mean.keys()), set(single_mean.keys()))
for key in multi_mean.keys():
np.testing.assert_equal(single_mean[key], multi_mean[key])
def main():
parser = argparse.ArgumentParser(
description='ChainerCV training example: FCIS')
parser.add_argument('--gpu', '-g', type=int, default=-1)
parser.add_argument('--out',
'-o',
default='result',
help='Output directory')
parser.add_argument('--seed', '-s', type=int, default=0)
parser.add_argument('--lr', '-l', type=float, default=0.0005)
parser.add_argument('--lr-cooldown-factor',
'-lcf',
type=float,
default=0.1)
parser.add_argument('--epoch', '-e', type=int, default=42)
parser.add_argument('--cooldown-epoch', '-ce', type=int, default=28)
args = parser.parse_args()
np.random.seed(args.seed)
# dataset
train_dataset = SBDInstanceSegmentationDataset(split='train')
test_dataset = SBDInstanceSegmentationDataset(split='val')
# model
fcis = FCISResNet101(n_fg_class=len(sbd_instance_segmentation_label_names),
pretrained_model='imagenet',
iter2=False)
fcis.use_preset('evaluate')
model = FCISTrainChain(fcis)
# gpu
if args.gpu >= 0:
chainer.cuda.get_device_from_id(args.gpu).use()
model.to_gpu()
# optimizer
optimizer = chainer.optimizers.MomentumSGD(lr=args.lr, momentum=0.9)
optimizer.setup(model)
model.fcis.head.conv1.W.update_rule.add_hook(GradientScaling(3.0))
model.fcis.head.conv1.b.update_rule.add_hook(GradientScaling(3.0))
optimizer.add_hook(chainer.optimizer.WeightDecay(rate=0.0005))
for param in model.params():
if param.name in ['beta', 'gamma']:
param.update_rule.enabled = False
model.fcis.extractor.conv1.disable_update()
model.fcis.extractor.res2.disable_update()
train_dataset = TransformDataset(train_dataset, Transform(model.fcis))
# iterator
train_iter = chainer.iterators.SerialIterator(train_dataset, batch_size=1)
test_iter = chainer.iterators.SerialIterator(test_dataset,
batch_size=1,
repeat=False,
shuffle=False)
updater = chainer.training.updater.StandardUpdater(
train_iter, optimizer, converter=concat_examples, device=args.gpu)
trainer = chainer.training.Trainer(updater, (args.epoch, 'epoch'),
out=args.out)
# lr scheduler
trainer.extend(chainer.training.extensions.ExponentialShift(
'lr', args.lr_cooldown_factor, init=args.lr),
trigger=(args.cooldown_epoch, 'epoch'))
# interval
log_interval = 100, 'iteration'
plot_interval = 3000, 'iteration'
print_interval = 20, 'iteration'
# training extensions
trainer.extend(extensions.snapshot_object(model.fcis,
filename='snapshot_model.npz'),
trigger=(args.epoch, 'epoch'))
trainer.extend(extensions.observe_lr(), trigger=log_interval)
trainer.extend(
extensions.LogReport(log_name='log.json', trigger=log_interval))
trainer.extend(extensions.PrintReport([
'iteration',
'epoch',
'elapsed_time',
'lr',
'main/loss',
'main/rpn_loc_loss',
'main/rpn_cls_loss',
'main/roi_loc_loss',
'main/roi_cls_loss',
'main/roi_mask_loss',
'validation/main/map',
]),
trigger=print_interval)
trainer.extend(extensions.ProgressBar(update_interval=10))
if extensions.PlotReport.available():
trainer.extend(extensions.PlotReport(['main/loss'],
file_name='loss.png',
trigger=plot_interval),
trigger=plot_interval)
trainer.extend(InstanceSegmentationVOCEvaluator(
test_iter,
model.fcis,
iou_thresh=0.5,
use_07_metric=True,
label_names=sbd_instance_segmentation_label_names),
trigger=ManualScheduleTrigger([
len(train_dataset) * args.cooldown_epoch,
len(train_dataset) * args.epoch
], 'iteration'))
trainer.extend(extensions.dump_graph('main/loss'))
trainer.run()
def main():
parser = argparse.ArgumentParser(
description='ChainerCV training example: FCIS')
parser.add_argument('--out',
'-o',
default='result',
help='Output directory')
parser.add_argument('--seed', '-s', type=int, default=0)
parser.add_argument(
'--lr',
'-l',
type=float,
default=0.0005,
help='Default value is for 1 GPU.\n'
'The learning rate will be multiplied by the number of gpu')
parser.add_argument('--lr-cooldown-factor',
'-lcf',
type=float,
default=0.1)
parser.add_argument('--epoch', '-e', type=int, default=42)
parser.add_argument('--cooldown-epoch', '-ce', type=list, default=[28, 31])
args = parser.parse_args()
# chainermn
comm = chainermn.create_communicator()
device = comm.intra_rank
np.random.seed(args.seed)
# model
fcis = FCISPSROIAlignResNet101(
n_fg_class=len(sbd_instance_segmentation_label_names),
pretrained_model='imagenet',
iter2=False)
fcis.use_preset('evaluate')
model = FCISTrainChain(fcis)
chainer.cuda.get_device_from_id(device).use()
model.to_gpu()
# dataset
train_dataset = TransformDataset(
SBDInstanceSegmentationDataset(split='train'),
('img', 'mask', 'label', 'bbox', 'scale'), Transform(model.fcis))
if comm.rank == 0:
indices = np.arange(len(train_dataset))
else:
indices = None
indices = chainermn.scatter_dataset(indices, comm, shuffle=True)
train_dataset = train_dataset.slice[indices]
train_iter = chainer.iterators.SerialIterator(train_dataset, batch_size=1)
if comm.rank == 0:
test_dataset = SBDInstanceSegmentationDataset(split='val')
test_iter = chainer.iterators.SerialIterator(test_dataset,
batch_size=1,
repeat=False,
shuffle=False)
# optimizer
optimizer = chainermn.create_multi_node_optimizer(
chainer.optimizers.MomentumSGD(lr=args.lr * comm.size, momentum=0.9),
comm)
optimizer.setup(model)
model.fcis.head.conv1.W.update_rule.add_hook(GradientScaling(3.0))
model.fcis.head.conv1.b.update_rule.add_hook(GradientScaling(3.0))
optimizer.add_hook(chainer.optimizer.WeightDecay(rate=0.0005))
for param in model.params():
if param.name in ['beta', 'gamma']:
param.update_rule.enabled = False
model.fcis.extractor.conv1.disable_update()
model.fcis.extractor.res2.disable_update()
updater = chainer.training.updater.StandardUpdater(
train_iter, optimizer, converter=concat_examples, device=device)
trainer = chainer.training.Trainer(updater, (args.epoch, 'epoch'),
out=args.out)
# lr scheduler
trainer.extend(chainer.training.extensions.ExponentialShift(
'lr', args.lr_cooldown_factor, init=args.lr * comm.size),
trigger=ManualScheduleTrigger(args.cooldown_epoch, 'epoch'))
if comm.rank == 0:
# interval
log_interval = 100, 'iteration'
plot_interval = 3000, 'iteration'
print_interval = 20, 'iteration'
# training extensions
model_name = model.fcis.__class__.__name__
trainer.extend(extensions.snapshot_object(
model.fcis,
filename='%s_model_iter_{.updater.iteration}.npz' % model_name),
trigger=(1, 'epoch'))
trainer.extend(extensions.observe_lr(), trigger=log_interval)
trainer.extend(
extensions.LogReport(log_name='log.json', trigger=log_interval))
trainer.extend(extensions.PrintReport([
'iteration',
'epoch',
'elapsed_time',
'lr',
'main/loss',
'main/rpn_loc_loss',
'main/rpn_cls_loss',
'main/roi_loc_loss',
'main/roi_cls_loss',
'main/roi_mask_loss',
'validation/main/map',
]),
trigger=print_interval)
trainer.extend(extensions.ProgressBar(update_interval=10))
if extensions.PlotReport.available():
trainer.extend(extensions.PlotReport(['main/loss'],
file_name='loss.png',
trigger=plot_interval),
trigger=plot_interval)
trainer.extend(InstanceSegmentationVOCEvaluator(
test_iter,
model.fcis,
iou_thresh=0.5,
use_07_metric=True,
label_names=sbd_instance_segmentation_label_names),
trigger=ManualScheduleTrigger(args.cooldown_epoch,
'epoch'))
trainer.extend(extensions.dump_graph('main/loss'))
trainer.run()
def main():
parser = argparse.ArgumentParser(
description='ChainerCV training example: FCIS')
parser.add_argument('--out',
'-o',
default='result',
help='Output directory')
parser.add_argument('--seed', '-s', type=int, default=0)
parser.add_argument('--lr',
'-l',
type=float,
default=None,
help='Learning rate for multi GPUs')
parser.add_argument('--batchsize', type=int, default=8)
parser.add_argument('--epoch', '-e', type=int, default=42)
parser.add_argument('--cooldown-epoch', '-ce', type=int, default=28)
args = parser.parse_args()
# https://docs.chainer.org/en/stable/chainermn/tutorial/tips_faqs.html#using-multiprocessiterator
if hasattr(multiprocessing, 'set_start_method'):
multiprocessing.set_start_method('forkserver')
p = multiprocessing.Process()
p.start()
p.join()
# chainermn
comm = chainermn.create_communicator('pure_nccl')
device = comm.intra_rank
np.random.seed(args.seed)
# model
fcis = FCISResNet101(n_fg_class=len(sbd_instance_segmentation_label_names),
pretrained_model='imagenet',
iter2=False)
fcis.use_preset('evaluate')
model = FCISTrainChain(fcis)
chainer.cuda.get_device_from_id(device).use()
model.to_gpu()
# dataset
train_dataset = TransformDataset(
SBDInstanceSegmentationDataset(split='train'),
('img', 'mask', 'label', 'bbox', 'scale'), Transform(model.fcis))
if comm.rank == 0:
indices = np.arange(len(train_dataset))
else:
indices = None
indices = chainermn.scatter_dataset(indices, comm, shuffle=True)
train_dataset = train_dataset.slice[indices]
train_iter = chainer.iterators.SerialIterator(train_dataset,
batch_size=args.batchsize //
comm.size)
if comm.rank == 0:
test_dataset = SBDInstanceSegmentationDataset(split='val')
test_iter = chainer.iterators.SerialIterator(test_dataset,
batch_size=1,
repeat=False,
shuffle=False)
# optimizer
optimizer = chainermn.create_multi_node_optimizer(
chainer.optimizers.MomentumSGD(lr=args.lr, momentum=0.9), comm)
optimizer.setup(model)
model.fcis.head.conv1.W.update_rule.add_hook(GradientScaling(3.0))
model.fcis.head.conv1.b.update_rule.add_hook(GradientScaling(3.0))
optimizer.add_hook(chainer.optimizer.WeightDecay(rate=0.0005))
for param in model.params():
if param.name in ['beta', 'gamma']:
param.update_rule.enabled = False
model.fcis.extractor.conv1.disable_update()
model.fcis.extractor.res2.disable_update()
updater = chainer.training.updater.StandardUpdater(
train_iter, optimizer, converter=concat_examples, device=device)
trainer = chainer.training.Trainer(updater, (args.epoch, 'epoch'),
out=args.out)
@make_shift('lr')
def lr_scheduler(trainer):
if args.lr is None:
base_lr = 0.0005 * args.batchsize
else:
base_lr = args.lr
epoch = trainer.updater.epoch
if epoch < args.cooldown_epoch:
rate = 1
else:
rate = 0.1
return rate * base_lr
trainer.extend(lr_scheduler)
if comm.rank == 0:
# interval
log_interval = 100, 'iteration'
plot_interval = 3000, 'iteration'
print_interval = 20, 'iteration'
# training extensions
trainer.extend(extensions.snapshot_object(
model.fcis, filename='snapshot_model.npz'),
trigger=(args.epoch, 'epoch'))
trainer.extend(extensions.observe_lr(), trigger=log_interval)
trainer.extend(
extensions.LogReport(log_name='log.json', trigger=log_interval))
trainer.extend(extensions.PrintReport([
'iteration',
'epoch',
'elapsed_time',
'lr',
'main/loss',
'main/rpn_loc_loss',
'main/rpn_cls_loss',
'main/roi_loc_loss',
'main/roi_cls_loss',
'main/roi_mask_loss',
'validation/main/map',
]),
trigger=print_interval)
trainer.extend(extensions.ProgressBar(update_interval=10))
if extensions.PlotReport.available():
trainer.extend(extensions.PlotReport(['main/loss'],
file_name='loss.png',
trigger=plot_interval),
trigger=plot_interval)
trainer.extend(InstanceSegmentationVOCEvaluator(
test_iter,
model.fcis,
iou_thresh=0.5,
use_07_metric=True,
label_names=sbd_instance_segmentation_label_names),
trigger=ManualScheduleTrigger([
len(train_dataset) * args.cooldown_epoch,
len(train_dataset) * args.epoch
], 'iteration'))
trainer.extend(extensions.dump_graph('main/loss'))
trainer.run()