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3rdparty/opencv-4.5.4/modules/dnn/test/test_nms.cpp 2.44 KB
f4334277   Hu Chunming   提交3rdparty
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  // This file is part of OpenCV project.
  // It is subject to the license terms in the LICENSE file found in the top-level directory
  // of this distribution and at http://opencv.org/license.html.
  //
  // Copyright (C) 2017, Intel Corporation, all rights reserved.
  // Third party copyrights are property of their respective owners.
  
  #include "test_precomp.hpp"
  
  namespace opencv_test { namespace {
  
  TEST(NMS, Accuracy)
  {
      //reference results obtained using tf.image.non_max_suppression with iou_threshold=0.5
      std::string dataPath = findDataFile("dnn/nms_reference.yml");
      FileStorage fs(dataPath, FileStorage::READ);
  
      std::vector<Rect> bboxes;
      std::vector<float> scores;
      std::vector<int> ref_indices;
  
      fs["boxes"] >> bboxes;
      fs["probs"] >> scores;
      fs["output"] >> ref_indices;
  
      const float nms_thresh = .5f;
      const float score_thresh = .01f;
      std::vector<int> indices;
      cv::dnn::NMSBoxes(bboxes, scores, score_thresh, nms_thresh, indices);
  
      ASSERT_EQ(ref_indices.size(), indices.size());
  
      std::sort(indices.begin(), indices.end());
      std::sort(ref_indices.begin(), ref_indices.end());
  
      for(size_t i = 0; i < indices.size(); i++)
          ASSERT_EQ(indices[i], ref_indices[i]);
  }
  
  TEST(SoftNMS, Accuracy)
  {
      //reference results are obtained using TF v2.7 tf.image.non_max_suppression_with_scores
      std::string dataPath = findDataFile("dnn/soft_nms_reference.yml");
      FileStorage fs(dataPath, FileStorage::READ);
  
      std::vector<Rect> bboxes;
      std::vector<float> scores;
      std::vector<int> ref_indices;
      std::vector<float> ref_updated_scores;
  
      fs["boxes"] >> bboxes;
      fs["probs"] >> scores;
      fs["indices"] >> ref_indices;
      fs["updated_scores"] >> ref_updated_scores;
  
      std::vector<float> updated_scores;
      const float score_thresh = .01f;
      const float nms_thresh = .5f;
      std::vector<int> indices;
      const size_t top_k = 0;
      const float sigma = 1.; // sigma in TF is being multiplied by 2, so 0.5 should be passed there
      cv::dnn::softNMSBoxes(bboxes, scores, updated_scores, score_thresh, nms_thresh, indices, top_k, sigma);
  
      ASSERT_EQ(ref_indices.size(), indices.size());
      for(size_t i = 0; i < indices.size(); i++)
      {
          ASSERT_EQ(indices[i], ref_indices[i]);
      }
  
      ASSERT_EQ(ref_updated_scores.size(), updated_scores.size());
      for(size_t i = 0; i < updated_scores.size(); i++)
      {
          EXPECT_NEAR(updated_scores[i], ref_updated_scores[i], 1e-7);
      }
  }
  
  }} // namespace