本文整理汇总了Python中object_detection.core.box_list_ops.prune_outside_window方法的典型用法代码示例。如果您正苦于以下问题：Python box_list_ops.prune_outside_window方法的具体用法？Python box_list_ops.prune_outside_window怎么用？Python box_list_ops.prune_outside_window使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类object_detection.core.box_list_ops的用法示例。
在下文中一共展示了box_list_ops.prune_outside_window方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_prune_outside_window_filters_boxes_which_fall_outside_the_window
# 需要导入模块: from object_detection.core import box_list_ops [as 别名]
# 或者: from object_detection.core.box_list_ops import prune_outside_window [as 别名]
def test_prune_outside_window_filters_boxes_which_fall_outside_the_window(
self):
window = tf.constant([0, 0, 9, 14], tf.float32)
corners = tf.constant([[5.0, 5.0, 6.0, 6.0],
[-1.0, -2.0, 4.0, 5.0],
[2.0, 3.0, 5.0, 9.0],
[0.0, 0.0, 9.0, 14.0],
[-10.0, -10.0, -9.0, -9.0],
[-100.0, -100.0, 300.0, 600.0]])
boxes = box_list.BoxList(corners)
boxes.add_field('extra_data', tf.constant([[1], [2], [3], [4], [5], [6]]))
exp_output = [[5.0, 5.0, 6.0, 6.0],
[2.0, 3.0, 5.0, 9.0],
[0.0, 0.0, 9.0, 14.0]]
pruned, keep_indices = box_list_ops.prune_outside_window(boxes, window)
with self.test_session() as sess:
pruned_output = sess.run(pruned.get())
self.assertAllClose(pruned_output, exp_output)
keep_indices_out = sess.run(keep_indices)
self.assertAllEqual(keep_indices_out, [0, 2, 3])
extra_data_out = sess.run(pruned.get_field('extra_data'))
self.assertAllEqual(extra_data_out, [[1], [3], [4]]) 示例2: test_prune_outside_window_filters_boxes_which_fall_outside_the_window
# 需要导入模块: from object_detection.core import box_list_ops [as 别名]
# 或者: from object_detection.core.box_list_ops import prune_outside_window [as 别名]
def test_prune_outside_window_filters_boxes_which_fall_outside_the_window(
self):
def graph_fn():
window = tf.constant([0, 0, 9, 14], tf.float32)
corners = tf.constant([[5.0, 5.0, 6.0, 6.0],
[-1.0, -2.0, 4.0, 5.0],
[2.0, 3.0, 5.0, 9.0],
[0.0, 0.0, 9.0, 14.0],
[-10.0, -10.0, -9.0, -9.0],
[-100.0, -100.0, 300.0, 600.0]])
boxes = box_list.BoxList(corners)
boxes.add_field('extra_data', tf.constant([[1], [2], [3], [4], [5], [6]]))
pruned, keep_indices = box_list_ops.prune_outside_window(boxes, window)
return pruned.get(), pruned.get_field('extra_data'), keep_indices
pruned_output, extra_data_out, keep_indices_out = self.execute_cpu(graph_fn,
[])
exp_output = [[5.0, 5.0, 6.0, 6.0],
[2.0, 3.0, 5.0, 9.0],
[0.0, 0.0, 9.0, 14.0]]
self.assertAllClose(pruned_output, exp_output)
self.assertAllEqual(keep_indices_out, [0, 2, 3])
self.assertAllEqual(extra_data_out, [[1], [3], [4]]) 示例3: _remove_invalid_anchors_and_predictions
# 需要导入模块: from object_detection.core import box_list_ops [as 别名]
# 或者: from object_detection.core.box_list_ops import prune_outside_window [as 别名]
def _remove_invalid_anchors_and_predictions(
self,
box_encodings,
objectness_predictions_with_background,
anchors_boxlist,
clip_window):
"""Removes anchors that (partially) fall outside an image.
Also removes associated box encodings and objectness predictions.
Args:
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).
anchors_boxlist: A BoxList representing num_anchors anchors (for the RPN)
in absolute coordinates.
clip_window: a 1-D tensor representing the [ymin, xmin, ymax, xmax]
extent of the window to clip/prune to.
Returns:
box_encodings: 4-D float tensor of shape
[batch_size, num_valid_anchors, self._box_coder.code_size] containing
predicted boxes, where num_valid_anchors <= num_anchors
objectness_predictions_with_background: 2-D float tensor of shape
[batch_size, num_valid_anchors, 2] containing class
predictions (logits) for each of the anchors, where
num_valid_anchors <= num_anchors. Note that this
tensor *includes* background class predictions (at class index 0).
anchors: A BoxList representing num_valid_anchors anchors (for the RPN) in
absolute coordinates.
"""
pruned_anchors_boxlist, keep_indices = box_list_ops.prune_outside_window(
anchors_boxlist, clip_window)
def _batch_gather_kept_indices(predictions_tensor):
return tf.map_fn(
partial(tf.gather, indices=keep_indices),
elems=predictions_tensor,
dtype=tf.float32,
parallel_iterations=self._parallel_iterations,
back_prop=True)
return (_batch_gather_kept_indices(box_encodings),
_batch_gather_kept_indices(objectness_predictions_with_background),
pruned_anchors_boxlist)