Adds a non_max_suppression op. This operation performs non max suppression of

bounding boxes, greedily selecting a subset of bounding boxes in descending order
of score, and pruning away boxes that have high intersection-over-union (IOU) overlap
with previously selected boxes.
Change: 127595411

1 files changed, 37 insertions, 0 deletions

diff --git a/tensorflow/core/kernels/non_max_suppression_op.h b/tensorflow/core/kernels/non_max_suppression_op.h
new file mode 100644
index 0000000000..d4349edf17
--- /dev/null
+++ b/tensorflow/core/kernels/non_max_suppression_op.h
@@ -0,0 +1,37 @@
+/* Copyright 2016 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#ifndef TENSORFLOW_CORE_KERNELS_NON_MAX_SUPPRESSION_OP_H_
+#define TENSORFLOW_CORE_KERNELS_NON_MAX_SUPPRESSION_OP_H_
+
+#include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor"
+#include "tensorflow/core/framework/numeric_types.h"
+#include "tensorflow/core/framework/tensor_types.h"
+
+namespace tensorflow {
+namespace functor {
+
+template <typename Device, typename T>
+struct NonMaxSuppression {
+  void operator()(const Device& d, typename TTypes<float, 2>::ConstTensor boxes,
+                  typename TTypes<float, 1>::ConstTensor scores,
+                  float iou_threshold, int max_output_size,
+                  typename TTypes<int, 1>::Tensor selected_indices);
+};
+
+}  // namespace functor
+}  // namespace tensorflow
+
+#endif  // TENSORFLOW_CORE_KERNELS_NON_MAX_SUPPRESSION_OP_H_