updateBackgroundModel  665 modules/cudalegacy/src/fgd.cpp         updateBackgroundModel(prevFrame_, curFrame, Ftd_, Fbd_, foreground_, background_, params_);
updateBackgroundModel   62 modules/cudalegacy/src/gmg.cpp                         int frameNum,  float learningRate, bool updateBackgroundModel, cudaStream_t stream);
updateBackgroundModel  173 modules/cudalegacy/src/gmg.cpp                                int frameNum, float learningRate, bool updateBackgroundModel, cudaStream_t stream);