added test for gpu: meanshift

tests/gpu/src/meanshift.cpp

@@ -0,0 +1,39 @@
+#include "gputest.hpp"
+#include <iostream>
+#include <string>
+
+#include <opencv2/opencv.hpp>
+#include <opencv2/gpu/gpu.hpp>
+
+class CV_GpuMeanShift : public CvTest
+{
+    public:
+        CV_GpuMeanShift();
+    protected:
+        void run(int);
+};
+
+CV_GpuMeanShift::CV_GpuMeanShift(): CvTest( "GPU-MeanShift", "meanshift" ){}
+
+void CV_GpuMeanShift::run(int )
+{
+        int spatialRad = 30;
+        int colorRad = 30;
+
+        cv::Mat img = cv::imread(std::string(ts->get_data_path()) + "meanshift/con.png");
+        cv::Mat img_template = cv::imread(std::string(ts->get_data_path()) + "meanshift/con_result.png");
+
+        cv::Mat rgba;
+        cvtColor(img, rgba, CV_BGR2BGRA);
+
+        cv::gpu::GpuMat res;
+
+        cv::gpu::meanShiftFiltering_GPU( cv::gpu::GpuMat(rgba), res, spatialRad, colorRad );
+
+        double norm = cv::norm(res, img_template, cv::NORM_INF);
+
+        ts->set_failed_test_info((norm < 0.5) ? CvTS::OK : CvTS::FAIL_GENERIC);
+}
+
+
+CV_GpuMeanShift CV_GpuMeanShift_test;