def METHOD_NAME(self):
    """convert data images to the convert images"""
    for idx, tag in enumerate(self._source_images):
        convert_target = self._convert_images[idx]
        convert_params = self.params.object_params(convert_target)
        convert_params["convert_target"] = convert_target
        img_obj = self.source_disk_define_by_params(self.params, tag)
        img_obj.convert(convert_params, img_obj.root_dir)