preprocessor_test.py 文件源码

python
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项目:tensorflow 作者: luyishisi 项目源码 文件源码
def testRandomImageScale(self):
    preprocess_options = [(preprocessor.random_image_scale, {})]
    images_original = self.createTestImages()
    tensor_dict = {fields.InputDataFields.image: images_original}
    tensor_dict = preprocessor.preprocess(tensor_dict, preprocess_options)
    images_scaled = tensor_dict[fields.InputDataFields.image]
    images_original_shape = tf.shape(images_original)
    images_scaled_shape = tf.shape(images_scaled)
    with self.test_session() as sess:
      (images_original_shape_, images_scaled_shape_) = sess.run(
          [images_original_shape, images_scaled_shape])
      self.assertTrue(
          images_original_shape_[1] * 0.5 <= images_scaled_shape_[1])
      self.assertTrue(
          images_original_shape_[1] * 2.0 >= images_scaled_shape_[1])
      self.assertTrue(
          images_original_shape_[2] * 0.5 <= images_scaled_shape_[2])
      self.assertTrue(
          images_original_shape_[2] * 2.0 >= images_scaled_shape_[2])
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