Function preprocess_for_eval

Preprocess an image for evaluation. Args: image: A `Tensor` representing an image of arbitrary size. out_shape: Output shape after pre-processing (if resize != None) resize: Resize strategy. Returns: A preprocessed image.

(image, labels, bboxes, xs, ys,
                        out_shape=EVAL_SIZE, data_format='NHWC',
                        difficults=None, resize=Resize.WARP_RESIZE,
                        scope='ssd_preprocessing_train')