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| import importlib | |
| from copy import deepcopy | |
| from os import path as osp | |
| from basicsr.utils import get_root_logger, scandir | |
| from basicsr.utils.registry import LOSS_REGISTRY | |
| from .gan_loss import g_path_regularize, gradient_penalty_loss, r1_penalty | |
| __all__ = ['build_loss', 'gradient_penalty_loss', 'r1_penalty', 'g_path_regularize'] | |
| # automatically scan and import loss modules for registry | |
| # scan all the files under the 'losses' folder and collect files ending with '_loss.py' | |
| loss_folder = osp.dirname(osp.abspath(__file__)) | |
| loss_filenames = [osp.splitext(osp.basename(v))[0] for v in scandir(loss_folder) if v.endswith('_loss.py')] | |
| # import all the loss modules | |
| _model_modules = [importlib.import_module(f'basicsr.losses.{file_name}') for file_name in loss_filenames] | |
| def build_loss(opt): | |
| """Build loss from options. | |
| Args: | |
| opt (dict): Configuration. It must contain: | |
| 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 | |