setPolynomialExpansionConsts  240 modules/cudaoptflow/src/farneback.cpp     void FarnebackOpticalFlowImpl::setPolynomialExpansionConsts(int n, double sigma)
setPolynomialExpansionConsts  801 modules/video/src/optflowgf.cpp     void setPolynomialExpansionConsts(int n, double sigma)