def __init__(self,
optimizer,
model,
training_dataloader,
validation_dataloader,
log_dir=False,
max_epoch=100,
resume=False,
persist_stride=1,
verbose=False):
self.start_epoch = 1
self.current_epoch = 1
self.verbose = verbose
self.max_epoch = max_epoch
self.persist_stride = persist_stride
# initialize log
self.log_dir = log_dir
log_file = os.path.join(self.log_dir, 'log.txt')
logging.basicConfig(filename=log_file, level=logging.DEBUG)
if not self.log_dir:
self.log_dir = os.path.join(
os.path.dirname(os.path.realpath(__file__)), 'logs')
if not os.path.isdir(self.log_dir):
os.mkdir(self.log_dir)
# initialize model
self.optimizer = optimizer
self.model = model.float().to(device)
self.model.load_state_dict(model_zoo.load_url(
Config.VGG16_PRETRAINED_WEIGHTS),
strict=False)
self.resume = str(resume) if resume else False
self.training_dataloader = training_dataloader
self.validation_dataloader = validation_dataloader
# initialize anchors
self.anchors = np.vstack(
list(
map(
lambda x: np.array(x),
generate_anchors(Config.ANCHOR_STRIDE, Config.ANCHOR_SIZE,
Config.IMAGE_SIZE))))
self.anchors_coord_changed = change_coordinate(self.anchors)
self.len_anchors = len(self.anchors)
# resume from some model
if self.resume:
state_file = seek_model(self.resume)
print("loading checkpoint {}".format(state_file))
checkpoint = torch.load(state_file)
self.start_epoch = self.current_epoch = checkpoint['epoch']
self.model.load_state_dict(checkpoint['state_dict'], strict=True)
self.optimizer.load_state_dict(checkpoint['optimizer'])
print("loaded checkpoint {} (epoch {})".format(
state_file, self.current_epoch))
def __init__(self,
model,
image_size=Config.IMAGE_SIZE,
threshold=Config.PREDICTION_THRESHOLD):
checkpoint = torch.load(seek_model(model))
self.model = Net().to(device)
self.model.load_state_dict(checkpoint['state_dict'], strict=True)
self.threshold = threshold
self.image_size = image_size
def __init__(self, model, image_size=Config.IMAGE_SIZE, threshold=Config.PREDICTION_THRESHOLD):
if type(model) == str:
checkpoint = torch.load(seek_model(model))
self.model = Net().to(device)
self.model.load_state_dict(checkpoint['state_dict'], strict=True)
else:
self.model = model
self.model.eval()
self.threshold = threshold
self.image_size = image_size
anchor_configs = (
Config.ANCHOR_STRIDE,
Config.ANCHOR_SIZE,
)
def __init__(self,
model,
image_size=Config.IMAGE_SIZE,
threshold=Config.PREDICTION_THRESHOLD):
checkpoint = torch.load(seek_model(model))
self.model = Net().to(device)
self.model.load_state_dict(checkpoint['state_dict'], strict=True)
self.threshold = threshold
self.image_size = image_size
anchor_configs = (Config.ANCHOR_STRIDE, Config.ANCHOR_SIZE,
Config.IMAGE_SIZE)
self.anchors = torch.tensor(
change_coordinate(
np.vstack(
list(
map(lambda x: np.array(x),
generate_anchors(*anchor_configs)))))).float()
def __init__(self, model, image_size=Config.IMAGE_SIZE, keep=200):
checkpoint = torch.load(seek_model(model))
self.model = Net().to(device)
self.model.load_state_dict(checkpoint['state_dict'], strict=True)
self.keep = keep
self.image_size = image_size