def __init__()

in segmentation/util/transform.py [0:0]


    def __init__(self, size, crop_type='center', padding=None, ignore_label=255):
        if isinstance(size, int):
            self.crop_h = size
            self.crop_w = size
        elif isinstance(size, collections.Iterable) and len(size) == 2 \
                and isinstance(size[0], int) and isinstance(size[1], int) \
                and size[0] > 0 and size[1] > 0:
            self.crop_h = size[0]
            self.crop_w = size[1]
        else:
            raise (RuntimeError("crop size error.\n"))
        if crop_type == 'center' or crop_type == 'rand':
            self.crop_type = crop_type
        else:
            raise (RuntimeError("crop type error: rand | center\n"))
        if padding is None:
            self.padding = padding
        elif isinstance(padding, list):
            if all(isinstance(i, numbers.Number) for i in padding):
                self.padding = padding
            else:
                raise (RuntimeError("padding in Crop() should be a number list\n"))
            if len(padding) != 3:
                raise (RuntimeError("padding channel is not equal with 3\n"))
        else:
            raise (RuntimeError("padding in Crop() should be a number list\n"))
        if isinstance(ignore_label, int):
            self.ignore_label = ignore_label
        else:
            raise (RuntimeError("ignore_label should be an integer number\n"))