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from copy import deepcopy
from basicsr.utils import get_root_logger
from basicsr.utils.registry import LOSS_REGISTRY
from .losses import (CharbonnierLoss, GANLoss, L1Loss, MSELoss, PerceptualLoss, WeightedTVLoss, g_path_regularize,
gradient_penalty_loss, r1_penalty)
__all__ = [
'L1Loss', 'MSELoss', 'CharbonnierLoss', 'WeightedTVLoss', 'PerceptualLoss', 'GANLoss', 'gradient_penalty_loss',
'r1_penalty', 'g_path_regularize'
]
def build_loss(opt):
"""Build loss from options.
Args:
opt (dict): Configuration. It must constain:
type (str): Model type.
"""
opt = deepcopy(opt)
loss_type = opt.pop('type')
loss = LOSS_REGISTRY.get(loss_type)(**opt)
logger = get_root_logger()
logger.info(f'Loss [{loss.__class__.__name__}] is created.')
return loss
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