@staticmethod
def __get_number_label(dict_pixel_label):
    """Get sum of label in image

        @return dict_label:  with key is label, value: coordinates of sprite
        @return list_label: sum of label in image
        """
    dict_label = {}
    for key, value in dict_pixel_label.items():
        if value not in dict_label:
            dict_label[value] = [key]
        elif key not in dict_label[value]:
            dict_label[value].append(key)
    return dict_label
