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mmedit.datasets.paired_image_dataset 源代码

# Copyright (c) OpenMMLab. All rights reserved.
import os.path as osp
from typing import Optional

from mmengine.dataset import BaseDataset
from mmengine.fileio import get_file_backend

from mmedit.registry import DATASETS

[文档]IMG_EXTENSIONS = ('.jpg', '.JPG', '.jpeg', '.JPEG', '.png', '.PNG', '.ppm', '.PPM', '.bmp', '.BMP', '.tif', '.TIF', '.tiff', '.TIFF')
@DATASETS.register_module()
[文档]class PairedImageDataset(BaseDataset): """General paired image folder dataset for image generation. It assumes that the training directory is '/path/to/data/train'. During test time, the directory is '/path/to/data/test'. '/path/to/data' can be initialized by args 'dataroot'. Each sample contains a pair of images concatenated in the w dimension (A|B). Args: dataroot (str | :obj:`Path`): Path to the folder root of paired images. pipeline (List[dict | callable]): A sequence of data transformations. test_mode (bool): Store `True` when building test dataset. Default: `False`. test_dir (str): Subfolder of dataroot which contain test images. Default: 'test'. """ def __init__(self, data_root, pipeline, io_backend: Optional[str] = None, test_mode=False, test_dir='test'): phase = test_dir if test_mode else 'train' self.data_root = osp.join(str(data_root), phase) if io_backend is None: self.file_backend = get_file_backend(uri=data_root) else: self.file_backend = get_file_backend( backend_args={'backend': io_backend}) super().__init__( data_root=self.data_root, pipeline=pipeline, test_mode=test_mode) # self.data_infos = self.load_annotations()
[文档] def load_data_list(self): """Load paired image paths. Returns: list[dict]: List that contains paired image paths. """ data_infos = [] pair_paths = sorted(self.scan_folder(self.data_root)) for pair_path in pair_paths: data_infos.append(dict(pair_path=pair_path)) return data_infos
[文档] def scan_folder(self, path): """Obtain image path list (including sub-folders) from a given folder. Args: path (str | :obj:`Path`): Folder path. Returns: list[str]: Image list obtained from the given folder. """ imgs_list = self.file_backend.list_dir_or_file( path, list_dir=False, suffix=IMG_EXTENSIONS, recursive=True) images = [self.file_backend.join_path(path, img) for img in imgs_list] assert images, f'{path} has no valid image file.' return images
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