Python box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND属性代码示例

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_get_boxes_with_five_classes(self):
    image_features = tf.random_uniform([2, 7, 7, 3], dtype=tf.float32)
    mask_box_predictor = box_predictor.MaskRCNNBoxPredictor(
        is_training=False,
        num_classes=5,
        fc_hyperparams=self._build_arg_scope_with_hyperparams(),
        use_dropout=False,
        dropout_keep_prob=0.5,
        box_code_size=4,
    )
    box_predictions = mask_box_predictor.predict(
        image_features, num_predictions_per_location=1, scope='BoxPredictor')
    box_encodings = box_predictions[box_predictor.BOX_ENCODINGS]
    class_predictions_with_background = box_predictions[
        box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND]
    init_op = tf.global_variables_initializer()
    with self.test_session() as sess:
      sess.run(init_op)
      (box_encodings_shape,
       class_predictions_with_background_shape) = sess.run(
           [tf.shape(box_encodings),
            tf.shape(class_predictions_with_background)])
      self.assertAllEqual(box_encodings_shape, [2, 1, 5, 4])
      self.assertAllEqual(class_predictions_with_background_shape, [2, 1, 6]) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def _predict_head(self, head_name, head_obj, image_feature, box_tower_feature,
                    feature_index, has_different_feature_channels,
                    target_channel, inserted_layer_counter,
                    num_predictions_per_location):
    if head_name == CLASS_PREDICTIONS_WITH_BACKGROUND:
      tower_name_scope = 'ClassPredictionTower'
    elif head_name == MASK_PREDICTIONS:
      tower_name_scope = 'MaskPredictionTower'
    else:
      raise ValueError('Unknown head')
    if self._share_prediction_tower:
      head_tower_feature = box_tower_feature
    else:
      head_tower_feature = self._compute_base_tower(
          tower_name_scope=tower_name_scope,
          image_feature=image_feature,
          feature_index=feature_index,
          has_different_feature_channels=has_different_feature_channels,
          target_channel=target_channel,
          inserted_layer_counter=inserted_layer_counter)
    return head_obj.predict(
        features=head_tower_feature,
        num_predictions_per_location=num_predictions_per_location) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_get_boxes_with_five_classes(self):
    image_features = tf.random_uniform([2, 7, 7, 3], dtype=tf.float32)
    mask_box_predictor = box_predictor.MaskRCNNBoxPredictor(
        is_training=False,
        num_classes=5,
        fc_hyperparams=self._build_arg_scope_with_hyperparams(),
        use_dropout=False,
        dropout_keep_prob=0.5,
        box_code_size=4,
    )
    box_predictions = mask_box_predictor.predict(
        [image_features], num_predictions_per_location=[1],
        scope='BoxPredictor')
    box_encodings = box_predictions[box_predictor.BOX_ENCODINGS]
    class_predictions_with_background = box_predictions[
        box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND]
    init_op = tf.global_variables_initializer()
    with self.test_session() as sess:
      sess.run(init_op)
      (box_encodings_shape,
       class_predictions_with_background_shape) = sess.run(
           [tf.shape(box_encodings),
            tf.shape(class_predictions_with_background)])
      self.assertAllEqual(box_encodings_shape, [2, 1, 5, 4])
      self.assertAllEqual(class_predictions_with_background_shape, [2, 1, 6]) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_do_not_return_instance_masks_without_request(self):
    image_features = tf.random_uniform([2, 7, 7, 3], dtype=tf.float32)
    mask_box_predictor = box_predictor.MaskRCNNBoxPredictor(
        is_training=False,
        num_classes=5,
        fc_hyperparams=self._build_arg_scope_with_hyperparams(),
        use_dropout=False,
        dropout_keep_prob=0.5,
        box_code_size=4)
    box_predictions = mask_box_predictor.predict(
        [image_features], num_predictions_per_location=[1],
        scope='BoxPredictor')
    self.assertEqual(len(box_predictions), 2)
    self.assertTrue(box_predictor.BOX_ENCODINGS in box_predictions)
    self.assertTrue(box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND
                    in box_predictions) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_get_boxes_for_five_aspect_ratios_per_location(self):

    def graph_fn(image_features):
      conv_box_predictor = box_predictor.WeightSharedConvolutionalBoxPredictor(
          is_training=False,
          num_classes=0,
          conv_hyperparams=self._build_arg_scope_with_conv_hyperparams(),
          depth=32,
          num_layers_before_predictor=1,
          box_code_size=4)
      box_predictions = conv_box_predictor.predict(
          [image_features], num_predictions_per_location=[5],
          scope='BoxPredictor')
      box_encodings = tf.concat(
          box_predictions[box_predictor.BOX_ENCODINGS], axis=1)
      objectness_predictions = tf.concat(box_predictions[
          box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND], axis=1)
      return (box_encodings, objectness_predictions)
    image_features = np.random.rand(4, 8, 8, 64).astype(np.float32)
    (box_encodings, objectness_predictions) = self.execute(
        graph_fn, [image_features])
    self.assertAllEqual(box_encodings.shape, [4, 320, 1, 4])
    self.assertAllEqual(objectness_predictions.shape, [4, 320, 1]) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_get_boxes_with_five_classes(self):
    image_features = tf.random_uniform([2, 7, 7, 3], dtype=tf.float32)
    mask_box_predictor = box_predictor.MaskRCNNBoxPredictor(
        is_training=False,
        num_classes=5,
        fc_hyperparams_fn=self._build_arg_scope_with_hyperparams(),
        use_dropout=False,
        dropout_keep_prob=0.5,
        box_code_size=4,
    )
    box_predictions = mask_box_predictor.predict(
        [image_features], num_predictions_per_location=[1],
        scope='BoxPredictor')
    box_encodings = box_predictions[box_predictor.BOX_ENCODINGS]
    class_predictions_with_background = box_predictions[
        box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND]
    init_op = tf.global_variables_initializer()
    with self.test_session() as sess:
      sess.run(init_op)
      (box_encodings_shape,
       class_predictions_with_background_shape) = sess.run(
           [tf.shape(box_encodings),
            tf.shape(class_predictions_with_background)])
      self.assertAllEqual(box_encodings_shape, [2, 1, 5, 4])
      self.assertAllEqual(class_predictions_with_background_shape, [2, 1, 6]) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_do_not_return_instance_masks_without_request(self):
    image_features = tf.random_uniform([2, 7, 7, 3], dtype=tf.float32)
    mask_box_predictor = box_predictor.MaskRCNNBoxPredictor(
        is_training=False,
        num_classes=5,
        fc_hyperparams_fn=self._build_arg_scope_with_hyperparams(),
        use_dropout=False,
        dropout_keep_prob=0.5,
        box_code_size=4)
    box_predictions = mask_box_predictor.predict(
        [image_features], num_predictions_per_location=[1],
        scope='BoxPredictor')
    self.assertEqual(len(box_predictions), 2)
    self.assertTrue(box_predictor.BOX_ENCODINGS in box_predictions)
    self.assertTrue(box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND
                    in box_predictions) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_bias_predictions_to_background_with_sigmoid_score_conversion(self):

    def graph_fn(image_features):
      conv_box_predictor = box_predictor.WeightSharedConvolutionalBoxPredictor(
          is_training=True,
          num_classes=2,
          conv_hyperparams_fn=self._build_arg_scope_with_conv_hyperparams(),
          depth=32,
          num_layers_before_predictor=1,
          class_prediction_bias_init=-4.6,
          box_code_size=4)
      box_predictions = conv_box_predictor.predict(
          [image_features], num_predictions_per_location=[5],
          scope='BoxPredictor')
      class_predictions = tf.concat(box_predictions[
          box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND], axis=1)
      return (tf.nn.sigmoid(class_predictions),)
    image_features = np.random.rand(4, 8, 8, 64).astype(np.float32)
    class_predictions = self.execute(graph_fn, [image_features])
    self.assertAlmostEqual(np.mean(class_predictions), 0.01, places=3) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def _predict(self, image_features, num_predictions_per_location):
    batch_size = image_features.get_shape().as_list()[0]
    num_anchors = (image_features.get_shape().as_list()[1]
                   * image_features.get_shape().as_list()[2])
    code_size = 4
    zero = tf.reduce_sum(0 * image_features)
    box_encodings = zero + tf.zeros(
        (batch_size, num_anchors, 1, code_size), dtype=tf.float32)
    class_predictions_with_background = zero + tf.zeros(
        (batch_size, num_anchors, self.num_classes + 1), dtype=tf.float32)
    return {box_predictor.BOX_ENCODINGS: box_encodings,
            box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND:
            class_predictions_with_background} 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def _predict_rpn_proposals(self, rpn_box_predictor_features):
    """Adds box predictors to RPN feature map to predict proposals.

    Note resulting tensors will not have been postprocessed.

    Args:
      rpn_box_predictor_features: A 4-D float32 tensor with shape
        [batch, height, width, depth] to be used for predicting proposal boxes
        and corresponding objectness scores.

    Returns:
      box_encodings: 3-D float tensor of shape
        [batch_size, num_anchors, self._box_coder.code_size] containing
        predicted boxes.
      objectness_predictions_with_background: 3-D float tensor of shape
        [batch_size, num_anchors, 2] containing class
        predictions (logits) for each of the anchors.  Note that this
        tensor *includes* background class predictions (at class index 0).

    Raises:
      RuntimeError: if the anchor generator generates anchors corresponding to
        multiple feature maps.  We currently assume that a single feature map
        is generated for the RPN.
    """
    num_anchors_per_location = (
        self._first_stage_anchor_generator.num_anchors_per_location())
    if len(num_anchors_per_location) != 1:
      raise RuntimeError('anchor_generator is expected to generate anchors '
                         'corresponding to a single feature map.')
    box_predictions = self._first_stage_box_predictor.predict(
        rpn_box_predictor_features,
        num_anchors_per_location[0],
        scope=self.first_stage_box_predictor_scope)

    box_encodings = box_predictions[box_predictor.BOX_ENCODINGS]
    objectness_predictions_with_background = box_predictions[
        box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND]
    return (tf.squeeze(box_encodings, axis=2),
            objectness_predictions_with_background) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_do_not_return_instance_masks_and_keypoints_without_request(self):
    image_features = tf.random_uniform([2, 7, 7, 3], dtype=tf.float32)
    mask_box_predictor = box_predictor.MaskRCNNBoxPredictor(
        is_training=False,
        num_classes=5,
        fc_hyperparams=self._build_arg_scope_with_hyperparams(),
        use_dropout=False,
        dropout_keep_prob=0.5,
        box_code_size=4)
    box_predictions = mask_box_predictor.predict(
        image_features, num_predictions_per_location=1, scope='BoxPredictor')
    self.assertEqual(len(box_predictions), 2)
    self.assertTrue(box_predictor.BOX_ENCODINGS in box_predictions)
    self.assertTrue(box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND
                    in box_predictions) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_get_boxes_for_five_aspect_ratios_per_location(self):
    image_features = tf.random_uniform([4, 8, 8, 64], dtype=tf.float32)
    conv_box_predictor = box_predictor.ConvolutionalBoxPredictor(
        is_training=False,
        num_classes=0,
        conv_hyperparams=self._build_arg_scope_with_conv_hyperparams(),
        min_depth=0,
        max_depth=32,
        num_layers_before_predictor=1,
        use_dropout=True,
        dropout_keep_prob=0.8,
        kernel_size=1,
        box_code_size=4
    )
    box_predictions = conv_box_predictor.predict(
        image_features, num_predictions_per_location=5, scope='BoxPredictor')
    box_encodings = box_predictions[box_predictor.BOX_ENCODINGS]
    objectness_predictions = box_predictions[
        box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND]

    init_op = tf.global_variables_initializer()
    with self.test_session() as sess:
      sess.run(init_op)
      (box_encodings_shape,
       objectness_predictions_shape) = sess.run(
           [tf.shape(box_encodings), tf.shape(objectness_predictions)])
      self.assertAllEqual(box_encodings_shape, [4, 320, 1, 4])
      self.assertAllEqual(objectness_predictions_shape, [4, 320, 1]) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_get_boxes_for_one_aspect_ratio_per_location(self):
    image_features = tf.random_uniform([4, 8, 8, 64], dtype=tf.float32)
    conv_box_predictor = box_predictor.ConvolutionalBoxPredictor(
        is_training=False,
        num_classes=0,
        conv_hyperparams=self._build_arg_scope_with_conv_hyperparams(),
        min_depth=0,
        max_depth=32,
        num_layers_before_predictor=1,
        use_dropout=True,
        dropout_keep_prob=0.8,
        kernel_size=1,
        box_code_size=4
    )
    box_predictions = conv_box_predictor.predict(
        image_features, num_predictions_per_location=1, scope='BoxPredictor')
    box_encodings = box_predictions[box_predictor.BOX_ENCODINGS]
    objectness_predictions = box_predictions[
        box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND]

    init_op = tf.global_variables_initializer()
    with self.test_session() as sess:
      sess.run(init_op)
      (box_encodings_shape,
       objectness_predictions_shape) = sess.run(
           [tf.shape(box_encodings), tf.shape(objectness_predictions)])
      self.assertAllEqual(box_encodings_shape, [4, 64, 1, 4])
      self.assertAllEqual(objectness_predictions_shape, [4, 64, 1]) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_get_multi_class_predictions_for_five_aspect_ratios_per_location(
      self):
    num_classes_without_background = 6
    image_features = tf.random_uniform([4, 8, 8, 64], dtype=tf.float32)
    conv_box_predictor = box_predictor.ConvolutionalBoxPredictor(
        is_training=False,
        num_classes=num_classes_without_background,
        conv_hyperparams=self._build_arg_scope_with_conv_hyperparams(),
        min_depth=0,
        max_depth=32,
        num_layers_before_predictor=1,
        use_dropout=True,
        dropout_keep_prob=0.8,
        kernel_size=1,
        box_code_size=4
    )
    box_predictions = conv_box_predictor.predict(
        image_features,
        num_predictions_per_location=5,
        scope='BoxPredictor')
    box_encodings = box_predictions[box_predictor.BOX_ENCODINGS]
    class_predictions_with_background = box_predictions[
        box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND]

    init_op = tf.global_variables_initializer()
    with self.test_session() as sess:
      sess.run(init_op)
      (box_encodings_shape, class_predictions_with_background_shape
      ) = sess.run([
          tf.shape(box_encodings), tf.shape(class_predictions_with_background)])
      self.assertAllEqual(box_encodings_shape, [4, 320, 1, 4])
      self.assertAllEqual(class_predictions_with_background_shape,
                          [4, 320, num_classes_without_background+1]) 

# 需要导入模块: from object_detection.core import box_predictor [as 别名]
# 或者: from object_detection.core.box_predictor import CLASS_PREDICTIONS_WITH_BACKGROUND [as 别名]
def test_get_boxes_for_five_aspect_ratios_per_location_fully_convolutional(
      self):
    image_features = tf.placeholder(dtype=tf.float32, shape=[4, None, None, 64])
    conv_box_predictor = box_predictor.ConvolutionalBoxPredictor(
        is_training=False,
        num_classes=0,
        conv_hyperparams=self._build_arg_scope_with_conv_hyperparams(),
        min_depth=0,
        max_depth=32,
        num_layers_before_predictor=1,
        use_dropout=True,
        dropout_keep_prob=0.8,
        kernel_size=1,
        box_code_size=4
    )
    box_predictions = conv_box_predictor.predict(
        image_features, num_predictions_per_location=5, scope='BoxPredictor')
    box_encodings = box_predictions[box_predictor.BOX_ENCODINGS]
    objectness_predictions = box_predictions[
        box_predictor.CLASS_PREDICTIONS_WITH_BACKGROUND]
    init_op = tf.global_variables_initializer()

    resolution = 32
    expected_num_anchors = resolution*resolution*5
    with self.test_session() as sess:
      sess.run(init_op)
      (box_encodings_shape,
       objectness_predictions_shape) = sess.run(
           [tf.shape(box_encodings), tf.shape(objectness_predictions)],
           feed_dict={image_features:
                      np.random.rand(4, resolution, resolution, 64)})
      self.assertAllEqual(box_encodings_shape, [4, expected_num_anchors, 1, 4])
      self.assertAllEqual(objectness_predictions_shape,
                          [4, expected_num_anchors, 1])