post_processor_detect.h

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/*
 * SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 * SPDX-License-Identifier: MIT
 *
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 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 */
 
#ifndef __POST_PROCESSOR_DETECT_HPP__
#define __POST_PROCESSOR_DETECT_HPP__
 
#include "post_processor.h"
 
typedef bool (* NvDsPostProcessParseCustomFunc) (
        std::vector<NvDsInferLayerInfo> const &outputLayersInfo,
        NvDsInferNetworkInfo  const &networkInfo,
        NvDsPostProcessParseDetectionParams const &detectionParams,
        std::vector<NvDsPostProcessObjectDetectionInfo> &objectList);
 
class DetectModelPostProcessor : public ModelPostProcessor{
 
public:
  DetectModelPostProcessor(int id, int gpuId = 0)
    : ModelPostProcessor (NvDsPostProcessNetworkType_Detector, id, gpuId) {}
 
  NvDsPostProcessStatus
  initResource(NvDsPostProcessContextInitParams& initParams) override;
  ~DetectModelPostProcessor() override = default;
  NvDsPostProcessStatus parseEachFrame(const std::vector <NvDsInferLayerInfo>&
       outputLayers,
       NvDsPostProcessFrameOutput &result) override;
  void
   attachMetadata (NvBufSurface *surf, gint batch_idx,
    NvDsBatchMeta  *batch_meta,
    NvDsFrameMeta  *frame_meta,
    NvDsObjectMeta  *object_meta,
    NvDsObjectMeta *parent_obj_meta,
    NvDsPostProcessFrameOutput & detection_output,
    NvDsPostProcessDetectionParams *all_params,
    std::set <gint> & filterOutClassIds,
    int32_t unique_id,
    gboolean output_instance_mask,
    gboolean process_full_frame,
    float segmentationThreshold,
    gboolean maintain_aspect_ratio) override;
 
  void releaseFrameOutput(NvDsPostProcessFrameOutput& frameOutput) override;
 private:
  bool parseBoundingBox(std::vector <NvDsInferLayerInfo> const&
       outputLayersInfo,
       NvDsInferNetworkInfo const& networkInfo,
       NvDsPostProcessParseDetectionParams const& detectionParams,
       std::vector<NvDsPostProcessObjectDetectionInfo>& objectList);
  std::vector<int> nonMaximumSuppression(
      std::vector <std::pair<float,int>>& scoreIndex,
      std::vector<NvDsPostProcessParseObjectInfo> &bbox,
      float const nmsThreshold);
 
  void clusterAndFillDetectionOutputHybrid(NvDsPostProcessDetectionOutput& output);
  void clusterAndFillDetectionOutputNMS(NvDsPostProcessDetectionOutput& output);
  void clusterAndFillDetectionOutputDBSCAN(NvDsPostProcessDetectionOutput& output);
  void fillUnclusteredOutput(NvDsPostProcessDetectionOutput& output);
  NvDsPostProcessStatus fillDetectionOutput(const std::vector <NvDsInferLayerInfo>& outputLayers,
      NvDsPostProcessDetectionOutput& output);
  void preClusteringThreshold(NvDsPostProcessParseDetectionParams const &detectionParams,
      std::vector<NvDsPostProcessObjectDetectionInfo> &objectList);
  void filterTopKOutputs(int const topK,
      std::vector<NvDsPostProcessObjectDetectionInfo> &objectList);
 
private:
  NvDsPostProcessClusterMode m_ClusterMode;
 
  uint32_t m_NumDetectedClasses = 0;
  std::shared_ptr<NvDsInferDBScan> m_DBScanHandle;
 
  std::vector <NvDsPostProcessDetectionParams> m_PerClassDetectionParams;
  NvDsPostProcessParseDetectionParams m_DetectionParams = {0, {}, {}};
 
  std::vector <NvDsPostProcessObjectDetectionInfo> m_ObjectList;
#ifdef WITH_OPENCV
  /* Vector of cv::Rect vectors for each class. */
  std::vector<std::vector<cv::Rect>> m_PerClassCvRectList;
#endif
   /* Vector of NvDsPostProcessObjectDetectionInfo vectors for each class. */
   std::vector<std::vector<NvDsPostProcessObjectDetectionInfo>> m_PerClassObjectList;
 
   NvDsPostProcessParseCustomFunc m_CustomBBoxParseFunc = nullptr;
 
};
 
 
#endif