slicingPpiSegmenter.hpp

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#pragma once
 
#include <cstdint>
#include <vector>
#include "patchGeneration/robin_hood.h"
#include "utils/constants.hpp"
#include "uvgutils/utils.hpp"
#include "uvgvpcc/uvgvpcc.hpp"
 
using namespace uvgvpcc_enc;
 
 
enum class VoxClass_NewRS : uint8_t {
    NO_EDGE = 0x00,        // one ppi-vaue in a voxel
    INDIRECT_EDGE = 0x01,  // adjcent voxels of M_DIRECT_EDGE, S_DIRECT_EDGE
    M_DIRECT_EDGE = 0x10,  // multiple points && more than two ppi-values in a voxel TODO(lf)verify if typo -> (more than one instead no ?)
    S_DIRECT_EDGE = 0x11   // single-point in a voxel, considered as a direct edge-voxel
};
 
// struct RefineParameters {
//     typeGeometryInput gridMaxAxisValue_;
//     size_t bitMask;
//     size_t distanceSearch;
// };
 
 
// TODO(lf): why to distinguish M and S direct edge ?
// TODO(lf): Are S DIRECT EGDE always considered as direct edge ? Even if they share the same PPI as their neighbor ? Does this mean each
// iteration focus on all single  direct edge voxel ?
 
struct VoxelAttribute_NewRS {
    bool updateFlag_; // Va peut-être disparaître
    VoxClass_NewRS voxClass_;
    size_t voxPPI_;
    std::array<size_t,6> voxScore_;  // TODO(lf): should be an array ?
    // Voxel score is a PPI histogram : how many points inside the voxel is associated with each projection planes //
 
    explicit VoxelAttribute_NewRS(const size_t projectionPlaneCount_);
};
 
class PPISegmenter_NewRS {
   public:
    PPISegmenter_NewRS(const std::vector<uvgutils::VectorN<typeGeometryInput, 3>>& pointsGeometry,
                 const std::vector<bool>& normalExists);
 
    template<typename keyType>
    void refineSegmentation_NewRS(const std::shared_ptr<uvgvpcc_enc::Frame>& frame,std::vector<size_t>& pointsPPIs, const size_t& frameId);
 
   private:
   
    template<typename keyType>
    static void voxelizationWithBitArray_NewRS(const std::vector<uvgutils::VectorN<typeGeometryInput, 3>>& inputPointsGeometry,
                                         std::vector<bool>& occFlagArray, robin_hood::unordered_map<keyType, size_t>& voxelIdxMap,
                                         std::vector<keyType>& filledVoxels, std::vector<std::vector<size_t>>& pointListInVoxels);    
 
    static void computeExtendedScore_NewRS(std::array<size_t,6>& voxExtendedScore,
                                        const std::vector<VoxelAttribute_NewRS>& voxAttributeList,
                                        const std::vector<size_t>& ADJ_ListNew);
 
    static void updateAdjacentVoxelsClass_NewRS(std::vector<VoxelAttribute_NewRS>& voxAttributeList,
                                                    const std::array<size_t,6>& voxExtendedScore,
                                                    const std::vector<size_t>& IDEV_List);
                                                    
    static inline bool checkNEV_NewRS(const VoxClass_NewRS voxClass, const size_t voxPPI,
                                          const std::array<size_t,6>& voxExtendedScore);
 
    inline void refinePointsPPIs_NewRS(std::vector<size_t>& pointsPPIs, const std::vector<size_t>& pointsPPIs_origin, const std::vector<size_t>& pointsIndices,
                                         const std::array<size_t,6>& voxExtendedScore, const size_t nnPointCount) const;
 
 
    static inline void updateVoxelAttribute_NewRS(VoxelAttribute_NewRS& voxAttribute, const std::vector<size_t>& voxPoints,
                                                      const std::vector<size_t>& pointsPPIs);
 
    const std::vector<bool>& normalExists_;
    const std::vector<uvgutils::VectorN<typeGeometryInput, 3>>& pointsGeometry_;
    const typeGeometryInput geoMax_;
    const typeGeometryInput geoRange_;
};