1 /* Copyright 2016 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_CORE_KERNELS_IMAGENON_MAX_SUPPRESSION_OP_H_ 17 #define TENSORFLOW_CORE_KERNELS_IMAGENON_MAX_SUPPRESSION_OP_H_ 18 19 #include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor" 20 #include "tensorflow/core/framework/numeric_types.h" 21 #include "tensorflow/core/framework/op_kernel.h" 22 #include "tensorflow/core/framework/tensor_types.h" 23 24 namespace tensorflow { 25 26 #if GOOGLE_CUDA || TENSORFLOW_USE_ROCM 27 extern const int kNmsBoxesPerTread; 28 29 // Given descending sorted box list, apply non-maximal-suppression with given 30 // threshold and select boxes to keep. 31 // - d_sorted_boxes_float_ptr: a pointer to device memory float array 32 // containing the box corners for N boxes sorted in descending order of 33 // scores. 34 // - num_boxes: number of boxes. 35 // - iou_threshold: the intersection-over-union (iou) threshold for elimination. 36 // - d_selected_indices: is a device pointer to int array containing sorted 37 // indices of the boxes to keep. 38 // - h_num_boxes_to_keep: is a host pointer for returning number of items 39 // to keep. 40 // - flip_boxes: flag reorders the boxes use lower left and upper right 41 // corners if they are given in mixed format. 42 Status NmsGpu(const float* d_sorted_boxes_float_ptr, const int num_boxes, 43 const float iou_threshold, int* d_selected_indices, 44 int* h_num_boxes_to_keep, OpKernelContext* context, 45 const int max_boxes, bool flip_boxes = false); 46 #endif 47 48 } // namespace tensorflow 49 50 #endif // TENSORFLOW_CORE_KERNELS_IMAGENON_MAX_SUPPRESSION_OP_H_ 51