Method __init__

tools/utils/dataset.py:175–201

(self,
        path,                   # Path to directory or zip.
        resolution      = None, # Ensure specific resolution, None = highest available.
        **super_kwargs,         # Additional arguments for the Dataset base class.
    )

class ImageFolderDataset(Dataset):
    def __init__(self,
        path,                   # Path to directory or zip.
        resolution      = None, # Ensure specific resolution, None = highest available.
        **super_kwargs,         # Additional arguments for the Dataset base class.
    ):
        self._path = path
        self._zipfile = None

        if os.path.isdir(self._path):
            self._type = 'dir'
            self._all_fnames = {os.path.relpath(os.path.join(root, fname), start=self._path) for root, _dirs, files in os.walk(self._path) for fname in files}
        elif self._file_ext(self._path) == '.zip':
            self._type = 'zip'
            self._all_fnames = set(self._get_zipfile().namelist())
        else:
            raise IOError('Path must point to a directory or zip')

        PIL.Image.init()
        self._image_fnames = sorted(fname for fname in self._all_fnames if self._file_ext(fname) in PIL.Image.EXTENSION)
        if len(self._image_fnames) == 0:
            raise IOError('No image files found in the specified path')

        name = os.path.splitext(os.path.basename(self._path))[0]
        raw_shape = [len(self._image_fnames)] + list(self._load_raw_image(0).shape)
        if resolution is not None and (raw_shape[2] != resolution or raw_shape[3] != resolution):
            raise IOError(f'Image files do not match the specified resolution. Resolution is {resolution}, shape is {raw_shape}')
        super().__init__(name=name, raw_shape=raw_shape, **super_kwargs)

    def _get_zipfile(self):
        assert self._type == 'zip'