add part of opencv

Lib/opencv/sources/modules/video/perf/perf_variational_refinement.cpp

@@ -0,0 +1,40 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+#include "perf_precomp.hpp"
+
+namespace opencv_test { namespace {
+
+typedef tuple<Size, int, int> VarRefParams;
+typedef TestBaseWithParam<VarRefParams> DenseOpticalFlow_VariationalRefinement;
+
+PERF_TEST_P(DenseOpticalFlow_VariationalRefinement, perf, Combine(Values(szQVGA, szVGA), Values(5, 10), Values(5, 10)))
+{
+    VarRefParams params = GetParam();
+    Size sz = get<0>(params);
+    int sorIter = get<1>(params);
+    int fixedPointIter = get<2>(params);
+
+    Mat frame1(sz, CV_8U);
+    Mat frame2(sz, CV_8U);
+    Mat flow(sz, CV_32FC2);
+
+    randu(frame1, 0, 255);
+    randu(frame2, 0, 255);
+    flow.setTo(0.0f);
+
+    TEST_CYCLE_N(10)
+    {
+        Ptr<VariationalRefinement> var = VariationalRefinement::create();
+        var->setAlpha(20.0f);
+        var->setGamma(10.0f);
+        var->setDelta(5.0f);
+        var->setSorIterations(sorIter);
+        var->setFixedPointIterations(fixedPointIter);
+        var->calc(frame1, frame2, flow);
+    }
+
+    SANITY_CHECK_NOTHING();
+}
+
+}} // namespace