Added performance test for cv::thining.

modules/ximgproc/perf/perf_thining.cpp

@@ -0,0 +1,36 @@
+// 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> ThinningPerfParam;
+typedef TestBaseWithParam<ThinningPerfParam> ThinningPerfTest;
+
+PERF_TEST_P(ThinningPerfTest, perf,
+    Combine(
+        Values(sz1080p, sz720p, szVGA),
+        Values(THINNING_ZHANGSUEN, THINNING_GUOHALL)
+    )
+)
+{
+    ThinningPerfParam params = GetParam();
+    Size size = get<0>(params);
+    int type  = get<1>(params);
+
+    Mat src = Mat::zeros(size, CV_8UC1);
+    for (int x = 50; x < src.cols - 50; x += 50)
+        cv::circle(src, Point(x, x/2), 30 + x/2, Scalar(255), 5);
+
+    Mat dst;
+    TEST_CYCLE()
+    {
+        thinning(src, dst, type);
+    }
+
+    SANITY_CHECK_NOTHING();
+}
+
+}} // namespace