ocl_apply         383 modules/video/src/bgfg_gaussmix2.cpp     bool ocl_apply(InputArray _image, OutputArray _fgmask, double learningRate=-1);
ocl_apply         831 modules/video/src/bgfg_gaussmix2.cpp         CV_OCL_RUN(opencl_ON, ocl_apply(_image, _fgmask, learningRate))