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     42 
     43 #ifndef __FGD_BGFG_COMMON_HPP__
     44 #define __FGD_BGFG_COMMON_HPP__
     45 
     46 #include "opencv2/core/cuda_types.hpp"
     47 
     48 namespace fgd
     49 {
     50     struct BGPixelStat
     51     {
     52     public:
     53 #ifdef __CUDACC__
     54         __device__ float& Pbc(int i, int j);
     55         __device__ float& Pbcc(int i, int j);
     56 
     57         __device__ unsigned char& is_trained_st_model(int i, int j);
     58         __device__ unsigned char& is_trained_dyn_model(int i, int j);
     59 
     60         __device__ float& PV_C(int i, int j, int k);
     61         __device__ float& PVB_C(int i, int j, int k);
     62         template <typename T> __device__ T& V_C(int i, int j, int k);
     63 
     64         __device__ float& PV_CC(int i, int j, int k);
     65         __device__ float& PVB_CC(int i, int j, int k);
     66         template <typename T> __device__ T& V1_CC(int i, int j, int k);
     67         template <typename T> __device__ T& V2_CC(int i, int j, int k);
     68 #endif
     69 
     70         int rows_;
     71 
     72         unsigned char* Pbc_data_;
     73         size_t Pbc_step_;
     74 
     75         unsigned char* Pbcc_data_;
     76         size_t Pbcc_step_;
     77 
     78         unsigned char* is_trained_st_model_data_;
     79         size_t is_trained_st_model_step_;
     80 
     81         unsigned char* is_trained_dyn_model_data_;
     82         size_t is_trained_dyn_model_step_;
     83 
     84         unsigned char* ctable_Pv_data_;
     85         size_t ctable_Pv_step_;
     86 
     87         unsigned char* ctable_Pvb_data_;
     88         size_t ctable_Pvb_step_;
     89 
     90         unsigned char* ctable_v_data_;
     91         size_t ctable_v_step_;
     92 
     93         unsigned char* cctable_Pv_data_;
     94         size_t cctable_Pv_step_;
     95 
     96         unsigned char* cctable_Pvb_data_;
     97         size_t cctable_Pvb_step_;
     98 
     99         unsigned char* cctable_v1_data_;
    100         size_t cctable_v1_step_;
    101 
    102         unsigned char* cctable_v2_data_;
    103         size_t cctable_v2_step_;
    104     };
    105 
    106 #ifdef __CUDACC__
    107     __device__ __forceinline__ float& BGPixelStat::Pbc(int i, int j)
    108     {
    109         return *((float*)(Pbc_data_ + i * Pbc_step_) + j);
    110     }
    111 
    112     __device__ __forceinline__ float& BGPixelStat::Pbcc(int i, int j)
    113     {
    114         return *((float*)(Pbcc_data_ + i * Pbcc_step_) + j);
    115     }
    116 
    117     __device__ __forceinline__ unsigned char& BGPixelStat::is_trained_st_model(int i, int j)
    118     {
    119         return *((unsigned char*)(is_trained_st_model_data_ + i * is_trained_st_model_step_) + j);
    120     }
    121 
    122     __device__ __forceinline__ unsigned char& BGPixelStat::is_trained_dyn_model(int i, int j)
    123     {
    124         return *((unsigned char*)(is_trained_dyn_model_data_ + i * is_trained_dyn_model_step_) + j);
    125     }
    126 
    127     __device__ __forceinline__ float& BGPixelStat::PV_C(int i, int j, int k)
    128     {
    129         return *((float*)(ctable_Pv_data_ + ((k * rows_) + i) * ctable_Pv_step_) + j);
    130     }
    131 
    132     __device__ __forceinline__ float& BGPixelStat::PVB_C(int i, int j, int k)
    133     {
    134         return *((float*)(ctable_Pvb_data_ + ((k * rows_) + i) * ctable_Pvb_step_) + j);
    135     }
    136 
    137     template <typename T> __device__ __forceinline__ T& BGPixelStat::V_C(int i, int j, int k)
    138     {
    139         return *((T*)(ctable_v_data_ + ((k * rows_) + i) * ctable_v_step_) + j);
    140     }
    141 
    142     __device__ __forceinline__ float& BGPixelStat::PV_CC(int i, int j, int k)
    143     {
    144         return *((float*)(cctable_Pv_data_ + ((k * rows_) + i) * cctable_Pv_step_) + j);
    145     }
    146 
    147     __device__ __forceinline__ float& BGPixelStat::PVB_CC(int i, int j, int k)
    148     {
    149         return *((float*)(cctable_Pvb_data_ + ((k * rows_) + i) * cctable_Pvb_step_) + j);
    150     }
    151 
    152     template <typename T> __device__ __forceinline__ T& BGPixelStat::V1_CC(int i, int j, int k)
    153     {
    154         return *((T*)(cctable_v1_data_ + ((k * rows_) + i) * cctable_v1_step_) + j);
    155     }
    156 
    157     template <typename T> __device__ __forceinline__ T& BGPixelStat::V2_CC(int i, int j, int k)
    158     {
    159         return *((T*)(cctable_v2_data_ + ((k * rows_) + i) * cctable_v2_step_) + j);
    160     }
    161 #endif
    162 
    163     const int PARTIAL_HISTOGRAM_COUNT = 240;
    164     const int HISTOGRAM_BIN_COUNT = 256;
    165 
    166     template <typename PT, typename CT>
    167     void calcDiffHistogram_gpu(cv::cuda::PtrStepSzb prevFrame, cv::cuda::PtrStepSzb curFrame,
    168                                unsigned int* hist0, unsigned int* hist1, unsigned int* hist2,
    169                                unsigned int* partialBuf0, unsigned int* partialBuf1, unsigned int* partialBuf2,
    170                                bool cc20, cudaStream_t stream);
    171 
    172     template <typename PT, typename CT>
    173     void calcDiffThreshMask_gpu(cv::cuda::PtrStepSzb prevFrame, cv::cuda::PtrStepSzb curFrame, uchar3 bestThres, cv::cuda::PtrStepSzb changeMask, cudaStream_t stream);
    174 
    175     void setBGPixelStat(const BGPixelStat& stat);
    176 
    177     template <typename PT, typename CT, typename OT>
    178     void bgfgClassification_gpu(cv::cuda::PtrStepSzb prevFrame, cv::cuda::PtrStepSzb curFrame,
    179                                 cv::cuda::PtrStepSzb Ftd, cv::cuda::PtrStepSzb Fbd, cv::cuda::PtrStepSzb foreground,
    180                                 int deltaC, int deltaCC, float alpha2, int N1c, int N1cc, cudaStream_t stream);
    181 
    182     template <typename PT, typename CT, typename OT>
    183     void updateBackgroundModel_gpu(cv::cuda::PtrStepSzb prevFrame, cv::cuda::PtrStepSzb curFrame,
    184                                    cv::cuda::PtrStepSzb Ftd, cv::cuda::PtrStepSzb Fbd, cv::cuda::PtrStepSzb foreground, cv::cuda::PtrStepSzb background,
    185                                    int deltaC, int deltaCC, float alpha1, float alpha2, float alpha3, int N1c, int N1cc, int N2c, int N2cc, float T,
    186                                    cudaStream_t stream);
    187 }
    188 
    189 #endif // __FGD_BGFG_COMMON_HPP__
    190