Image_RhoStep_ThetaStep_Threshold_t   11 modules/imgproc/perf/perf_houghLines.cpp typedef std::tr1::tuple<string, double, double, int> Image_RhoStep_ThetaStep_Threshold_t;
Image_RhoStep_ThetaStep_Threshold_t  113 modules/imgproc/test/test_houghLines.cpp typedef std::tr1::tuple<string, double, double, int> Image_RhoStep_ThetaStep_Threshold_t;