Python object_detection.utils.dataset_util.bytes_feature() Examples

The following are 30 code examples of object_detection.utils.dataset_util.bytes_feature(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module object_detection.utils.dataset_util , or try the search function .
Example #1
Source File: detection_inference_test.py    From Elphas with Apache License 2.0 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #2
Source File: tf_example_decoder_test.py    From vehicle_counting_tensorflow with MIT License 6 votes vote down vote up
def testDecodeObjectArea(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    object_area = [100., 174.]
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded':
                    dataset_util.bytes_feature(encoded_jpeg),
                'image/format':
                    dataset_util.bytes_feature('jpeg'),
                'image/object/area':
                    dataset_util.float_list_feature(object_area),
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    self.assertAllEqual((tensor_dict[fields.InputDataFields.groundtruth_area]
                         .get_shape().as_list()), [2])
    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertAllEqual(object_area,
                        tensor_dict[fields.InputDataFields.groundtruth_area]) 
Example #3
Source File: tf_example_decoder_test.py    From MAX-Object-Detector with Apache License 2.0 6 votes vote down vote up
def testDecodeObjectWeight(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    object_weights = [0.75, 1.0]
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded':
                    dataset_util.bytes_feature(encoded_jpeg),
                'image/format':
                    dataset_util.bytes_feature('jpeg'),
                'image/object/weight':
                    dataset_util.float_list_feature(object_weights),
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    self.assertAllEqual((tensor_dict[fields.InputDataFields.groundtruth_weights]
                         .get_shape().as_list()), [None])
    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertAllEqual(object_weights,
                        tensor_dict[fields.InputDataFields.groundtruth_weights]) 
Example #4
Source File: tf_example_decoder_test.py    From g-tensorflow-models with Apache License 2.0 6 votes vote down vote up
def testDecodeImageKeyAndFilename(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded': dataset_util.bytes_feature(encoded_jpeg),
                'image/key/sha256': dataset_util.bytes_feature('abc'),
                'image/filename': dataset_util.bytes_feature('filename')
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertEqual('abc', tensor_dict[fields.InputDataFields.key])
    self.assertEqual('filename', tensor_dict[fields.InputDataFields.filename]) 
Example #5
Source File: tf_example_decoder_test.py    From vehicle_counting_tensorflow with MIT License 6 votes vote down vote up
def testDecodeImageKeyAndFilename(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded': dataset_util.bytes_feature(encoded_jpeg),
                'image/key/sha256': dataset_util.bytes_feature('abc'),
                'image/filename': dataset_util.bytes_feature('filename')
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertEqual('abc', tensor_dict[fields.InputDataFields.key])
    self.assertEqual('filename', tensor_dict[fields.InputDataFields.filename]) 
Example #6
Source File: detection_inference_test.py    From g-tensorflow-models with Apache License 2.0 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #7
Source File: tf_example_decoder_test.py    From vehicle_counting_tensorflow with MIT License 6 votes vote down vote up
def testDecodeObjectWeight(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    object_weights = [0.75, 1.0]
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded':
                    dataset_util.bytes_feature(encoded_jpeg),
                'image/format':
                    dataset_util.bytes_feature('jpeg'),
                'image/object/weight':
                    dataset_util.float_list_feature(object_weights),
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    self.assertAllEqual((tensor_dict[fields.InputDataFields.groundtruth_weights]
                         .get_shape().as_list()), [None])
    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertAllEqual(object_weights,
                        tensor_dict[fields.InputDataFields.groundtruth_weights]) 
Example #8
Source File: tf_example_decoder_test.py    From MAX-Object-Detector with Apache License 2.0 6 votes vote down vote up
def testDecodeObjectArea(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    object_area = [100., 174.]
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded':
                    dataset_util.bytes_feature(encoded_jpeg),
                'image/format':
                    dataset_util.bytes_feature('jpeg'),
                'image/object/area':
                    dataset_util.float_list_feature(object_area),
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    self.assertAllEqual((tensor_dict[fields.InputDataFields.groundtruth_area]
                         .get_shape().as_list()), [2])
    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertAllEqual(object_area,
                        tensor_dict[fields.InputDataFields.groundtruth_area]) 
Example #9
Source File: detection_inference_test.py    From ros_people_object_detection_tensorflow with Apache License 2.0 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #10
Source File: detection_inference_test.py    From Person-Detection-and-Tracking with MIT License 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #11
Source File: detection_inference_test.py    From yolo_v2 with Apache License 2.0 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #12
Source File: detection_inference_test.py    From Gun-Detector with Apache License 2.0 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #13
Source File: detection_inference_test.py    From vehicle_counting_tensorflow with MIT License 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #14
Source File: detection_inference_test.py    From object_detection_with_tensorflow with MIT License 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #15
Source File: input_reader_builder_test.py    From Live-feed-object-device-identification-using-Tensorflow-and-OpenCV with Apache License 2.0 6 votes vote down vote up
def create_tf_record(self):
    path = os.path.join(self.get_temp_dir(), 'tfrecord')
    writer = tf.python_io.TFRecordWriter(path)

    image_tensor = np.random.randint(255, size=(4, 5, 3)).astype(np.uint8)
    flat_mask = (4 * 5) * [1.0]
    with self.test_session():
      encoded_jpeg = tf.image.encode_jpeg(tf.constant(image_tensor)).eval()
    example = tf.train.Example(features=tf.train.Features(feature={
        'image/encoded': dataset_util.bytes_feature(encoded_jpeg),
        'image/format': dataset_util.bytes_feature('jpeg'.encode('utf8')),
        'image/height': dataset_util.int64_feature(4),
        'image/width': dataset_util.int64_feature(5),
        'image/object/bbox/xmin': dataset_util.float_list_feature([0.0]),
        'image/object/bbox/xmax': dataset_util.float_list_feature([1.0]),
        'image/object/bbox/ymin': dataset_util.float_list_feature([0.0]),
        'image/object/bbox/ymax': dataset_util.float_list_feature([1.0]),
        'image/object/class/label': dataset_util.int64_list_feature([2]),
        'image/object/mask': dataset_util.float_list_feature(flat_mask),
    }))
    writer.write(example.SerializeToString())
    writer.close()

    return path 
Example #16
Source File: detection_inference_test.py    From AniSeg with Apache License 2.0 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #17
Source File: input_reader_builder_test.py    From Live-feed-object-device-identification-using-Tensorflow-and-OpenCV with Apache License 2.0 6 votes vote down vote up
def create_tf_record(self):
    path = os.path.join(self.get_temp_dir(), 'tfrecord')
    writer = tf.python_io.TFRecordWriter(path)

    image_tensor = np.random.randint(255, size=(4, 5, 3)).astype(np.uint8)
    flat_mask = (4 * 5) * [1.0]
    with self.test_session():
      encoded_jpeg = tf.image.encode_jpeg(tf.constant(image_tensor)).eval()
    example = tf.train.Example(features=tf.train.Features(feature={
        'image/encoded': dataset_util.bytes_feature(encoded_jpeg),
        'image/format': dataset_util.bytes_feature('jpeg'.encode('utf8')),
        'image/height': dataset_util.int64_feature(4),
        'image/width': dataset_util.int64_feature(5),
        'image/object/bbox/xmin': dataset_util.float_list_feature([0.0]),
        'image/object/bbox/xmax': dataset_util.float_list_feature([1.0]),
        'image/object/bbox/ymin': dataset_util.float_list_feature([0.0]),
        'image/object/bbox/ymax': dataset_util.float_list_feature([1.0]),
        'image/object/class/label': dataset_util.int64_list_feature([2]),
        'image/object/mask': dataset_util.float_list_feature(flat_mask),
    }))
    writer.write(example.SerializeToString())
    writer.close()

    return path 
Example #18
Source File: detection_inference_test.py    From MAX-Object-Detector with Apache License 2.0 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #19
Source File: tf_example_decoder_test.py    From MAX-Object-Detector with Apache License 2.0 6 votes vote down vote up
def testDecodeImageKeyAndFilename(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded': dataset_util.bytes_feature(encoded_jpeg),
                'image/key/sha256': dataset_util.bytes_feature('abc'),
                'image/filename': dataset_util.bytes_feature('filename')
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertEqual('abc', tensor_dict[fields.InputDataFields.key])
    self.assertEqual('filename', tensor_dict[fields.InputDataFields.filename]) 
Example #20
Source File: detection_inference_test.py    From BMW-TensorFlow-Training-GUI with Apache License 2.0 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #21
Source File: detection_inference_test.py    From ros_tensorflow with Apache License 2.0 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #22
Source File: detection_inference_test.py    From Traffic-Rule-Violation-Detection-System with MIT License 6 votes vote down vote up
def create_mock_tfrecord():
  pil_image = Image.fromarray(np.array([[[123, 0, 0]]], dtype=np.uint8), 'RGB')
  image_output_stream = StringIO.StringIO()
  pil_image.save(image_output_stream, format='png')
  encoded_image = image_output_stream.getvalue()

  feature_map = {
      'test_field':
          dataset_util.float_list_feature([1, 2, 3, 4]),
      standard_fields.TfExampleFields.image_encoded:
          dataset_util.bytes_feature(encoded_image),
  }

  tf_example = tf.train.Example(features=tf.train.Features(feature=feature_map))
  with tf.python_io.TFRecordWriter(get_mock_tfrecord_path()) as writer:
    writer.write(tf_example.SerializeToString()) 
Example #23
Source File: tf_example_decoder_test.py    From g-tensorflow-models with Apache License 2.0 5 votes vote down vote up
def testDecodeAdditionalChannels(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)

    additional_channel_tensor = np.random.randint(
        256, size=(4, 5, 1)).astype(np.uint8)
    encoded_additional_channel = self._EncodeImage(additional_channel_tensor)
    decoded_additional_channel = self._DecodeImage(encoded_additional_channel)

    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded':
                    dataset_util.bytes_feature(encoded_jpeg),
                'image/additional_channels/encoded':
                    dataset_util.bytes_list_feature(
                        [encoded_additional_channel] * 2),
                'image/format':
                    dataset_util.bytes_feature('jpeg'),
                'image/source_id':
                    dataset_util.bytes_feature('image_id'),
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder(
        num_additional_channels=2)
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)
      self.assertAllEqual(
          np.concatenate([decoded_additional_channel] * 2, axis=2),
          tensor_dict[fields.InputDataFields.image_additional_channels]) 
Example #24
Source File: tf_example_decoder_test.py    From MAX-Object-Detector with Apache License 2.0 5 votes vote down vote up
def testDecodePngImage(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_png = self._EncodeImage(image_tensor, encoding_type='png')
    decoded_png = self._DecodeImage(encoded_png, encoding_type='png')
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded': dataset_util.bytes_feature(encoded_png),
                'image/format': dataset_util.bytes_feature('png'),
                'image/source_id': dataset_util.bytes_feature('image_id')
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    self.assertAllEqual((tensor_dict[fields.InputDataFields.image].
                         get_shape().as_list()), [None, None, 3])
    self.assertAllEqual((tensor_dict[fields.InputDataFields.
                                     original_image_spatial_shape].
                         get_shape().as_list()), [2])
    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertAllEqual(decoded_png, tensor_dict[fields.InputDataFields.image])
    self.assertAllEqual([4, 5], tensor_dict[fields.InputDataFields.
                                            original_image_spatial_shape])
    self.assertEqual('image_id', tensor_dict[fields.InputDataFields.source_id]) 
Example #25
Source File: tf_example_decoder_test.py    From MAX-Object-Detector with Apache License 2.0 5 votes vote down vote up
def testDecodeJpegImage(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    decoded_jpeg = self._DecodeImage(encoded_jpeg)
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded': dataset_util.bytes_feature(encoded_jpeg),
                'image/format': dataset_util.bytes_feature('jpeg'),
                'image/source_id': dataset_util.bytes_feature('image_id'),
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    self.assertAllEqual((tensor_dict[fields.InputDataFields.image].
                         get_shape().as_list()), [None, None, 3])
    self.assertAllEqual((tensor_dict[fields.InputDataFields.
                                     original_image_spatial_shape].
                         get_shape().as_list()), [2])
    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertAllEqual(decoded_jpeg, tensor_dict[fields.InputDataFields.image])
    self.assertAllEqual([4, 5], tensor_dict[fields.InputDataFields.
                                            original_image_spatial_shape])
    self.assertEqual('image_id', tensor_dict[fields.InputDataFields.source_id]) 
Example #26
Source File: tf_example_decoder_test.py    From MAX-Object-Detector with Apache License 2.0 5 votes vote down vote up
def testDecodeAdditionalChannels(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)

    additional_channel_tensor = np.random.randint(
        256, size=(4, 5, 1)).astype(np.uint8)
    encoded_additional_channel = self._EncodeImage(additional_channel_tensor)
    decoded_additional_channel = self._DecodeImage(encoded_additional_channel)

    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded':
                    dataset_util.bytes_feature(encoded_jpeg),
                'image/additional_channels/encoded':
                    dataset_util.bytes_list_feature(
                        [encoded_additional_channel] * 2),
                'image/format':
                    dataset_util.bytes_feature('jpeg'),
                'image/source_id':
                    dataset_util.bytes_feature('image_id'),
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder(
        num_additional_channels=2)
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)
      self.assertAllEqual(
          np.concatenate([decoded_additional_channel] * 2, axis=2),
          tensor_dict[fields.InputDataFields.image_additional_channels]) 
Example #27
Source File: tf_example_decoder_test.py    From g-tensorflow-models with Apache License 2.0 5 votes vote down vote up
def testDecodeDefaultGroundtruthWeights(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    bbox_ymins = [0.0, 4.0]
    bbox_xmins = [1.0, 5.0]
    bbox_ymaxs = [2.0, 6.0]
    bbox_xmaxs = [3.0, 7.0]
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded':
                    dataset_util.bytes_feature(encoded_jpeg),
                'image/format':
                    dataset_util.bytes_feature('jpeg'),
                'image/object/bbox/ymin':
                    dataset_util.float_list_feature(bbox_ymins),
                'image/object/bbox/xmin':
                    dataset_util.float_list_feature(bbox_xmins),
                'image/object/bbox/ymax':
                    dataset_util.float_list_feature(bbox_ymaxs),
                'image/object/bbox/xmax':
                    dataset_util.float_list_feature(bbox_xmaxs),
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    self.assertAllEqual((tensor_dict[fields.InputDataFields.groundtruth_boxes]
                         .get_shape().as_list()), [None, 4])

    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertAllClose(tensor_dict[fields.InputDataFields.groundtruth_weights],
                        np.ones(2, dtype=np.float32)) 
Example #28
Source File: tf_example_decoder_test.py    From g-tensorflow-models with Apache License 2.0 5 votes vote down vote up
def testDecodeObjectLabel(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_jpeg = self._EncodeImage(image_tensor)
    bbox_classes = [0, 1]
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded':
                    dataset_util.bytes_feature(encoded_jpeg),
                'image/format':
                    dataset_util.bytes_feature('jpeg'),
                'image/object/class/label':
                    dataset_util.int64_list_feature(bbox_classes),
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    self.assertAllEqual((tensor_dict[fields.InputDataFields.groundtruth_classes]
                         .get_shape().as_list()), [2])

    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertAllEqual(bbox_classes,
                        tensor_dict[fields.InputDataFields.groundtruth_classes]) 
Example #29
Source File: gen_tfrecord.py    From DeepLogo with MIT License 5 votes vote down vote up
def create_tf_example(csv, img_dir):
    img_fname = csv[0]
    x1, y1, x2, y2 = list(map(int, csv[1:-1]))
    cls_idx = int(csv[-1])
    cls_text = config.CLASS_NAMES[cls_idx].encode('utf8')
    with tf.gfile.GFile(os.path.join(img_dir, img_fname), 'rb') as fid:
        encoded_jpg = fid.read()
    encoded_jpg_io = io.BytesIO(encoded_jpg)
    image = Image.open(encoded_jpg_io)
    width, height = image.size

    xmin = [x1 / width]
    xmax = [x2 / width]
    ymin = [y1 / height]
    ymax = [y2 / height]
    cls_text = [cls_text]
    cls_idx = [cls_idx]

    filename = img_fname.encode('utf8')
    image_format = b'jpg'

    tf_example = tf.train.Example(features=tf.train.Features(feature={
        'image/height': dataset_util.int64_feature(height),
        'image/width': dataset_util.int64_feature(width),
        'image/filename': dataset_util.bytes_feature(filename),
        'image/source_id': dataset_util.bytes_feature(filename),
        'image/encoded': dataset_util.bytes_feature(encoded_jpg),
        'image/format': dataset_util.bytes_feature(image_format),
        'image/object/bbox/xmin': dataset_util.float_list_feature(xmin),
        'image/object/bbox/xmax': dataset_util.float_list_feature(xmax),
        'image/object/bbox/ymin': dataset_util.float_list_feature(ymin),
        'image/object/bbox/ymax': dataset_util.float_list_feature(ymax),
        'image/object/class/text': dataset_util.bytes_list_feature(cls_text),
        'image/object/class/label': dataset_util.int64_list_feature(cls_idx),        
    }))

    return tf_example 
Example #30
Source File: tf_example_decoder_test.py    From g-tensorflow-models with Apache License 2.0 5 votes vote down vote up
def testDecodePngImage(self):
    image_tensor = np.random.randint(256, size=(4, 5, 3)).astype(np.uint8)
    encoded_png = self._EncodeImage(image_tensor, encoding_type='png')
    decoded_png = self._DecodeImage(encoded_png, encoding_type='png')
    example = tf.train.Example(
        features=tf.train.Features(
            feature={
                'image/encoded': dataset_util.bytes_feature(encoded_png),
                'image/format': dataset_util.bytes_feature('png'),
                'image/source_id': dataset_util.bytes_feature('image_id')
            })).SerializeToString()

    example_decoder = tf_example_decoder.TfExampleDecoder()
    tensor_dict = example_decoder.decode(tf.convert_to_tensor(example))

    self.assertAllEqual((tensor_dict[fields.InputDataFields.image].
                         get_shape().as_list()), [None, None, 3])
    self.assertAllEqual((tensor_dict[fields.InputDataFields.
                                     original_image_spatial_shape].
                         get_shape().as_list()), [2])
    with self.test_session() as sess:
      tensor_dict = sess.run(tensor_dict)

    self.assertAllEqual(decoded_png, tensor_dict[fields.InputDataFields.image])
    self.assertAllEqual([4, 5], tensor_dict[fields.InputDataFields.
                                            original_image_spatial_shape])
    self.assertEqual('image_id', tensor_dict[fields.InputDataFields.source_id])