dft              2470 modules/core/src/dxt.cpp void cv::dft( InputArray _src0, OutputArray _dst, int flags, int nonzero_rows )
dft                55 modules/cudaarithm/src/arithm.cpp void cv::cuda::dft(InputArray, OutputArray, Size, int, Stream&) { throw_no_cuda(); }
dft               291 modules/cudaarithm/src/arithm.cpp void cv::cuda::dft(InputArray _src, OutputArray _dst, Size dft_size, int flags, Stream& stream)