vendor: OpenCV 5.0.0 snapshot at 755e50675d97db9b7d449d8bd6b09888646f6c6e

2026-08-22 00:11:13 +08:00
commit 12022378a3
3872 changed files with 2513409 additions and 0 deletions
@@ -0,0 +1,57 @@
+// 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 "test_precomp.hpp"
+
+namespace opencv_test { namespace {
+
+static int createTestImage(Mat1b& src)
+{
+    src = Mat1b::zeros(Size(256, 256));
+    // Create a corner point that should not be affected.
+    src(0, 0) = 255;
+
+    for (int x = 50; x < src.cols - 50; x += 50)
+    {
+        cv::circle(src, Point(x, x/2), 30 + x/2, Scalar(255), 5);
+    }
+    int src_pixels = countNonZero(src);
+    EXPECT_GT(src_pixels, 0);
+    return src_pixels;
+}
+
+TEST(ximgproc_Thinning, simple_ZHANGSUEN)
+{
+    Mat1b src;
+    int src_pixels = createTestImage(src);
+
+    Mat1b dst;
+    thinning(src, dst, THINNING_ZHANGSUEN);
+    int dst_pixels = countNonZero(dst);
+    EXPECT_LE(dst_pixels, src_pixels);
+    EXPECT_EQ(dst(0, 0), 255);
+
+#if 0
+    imshow("src", src); imshow("dst", dst); waitKey();
+#endif
+}
+
+TEST(ximgproc_Thinning, simple_GUOHALL)
+{
+    Mat1b src;
+    int src_pixels = createTestImage(src);
+
+    Mat1b dst;
+    thinning(src, dst, THINNING_GUOHALL);
+    int dst_pixels = countNonZero(dst);
+    EXPECT_LE(dst_pixels, src_pixels);
+    EXPECT_EQ(dst(0, 0), 255);
+
+#if 0
+    imshow("src", src); imshow("dst", dst); waitKey();
+#endif
+}
+
+
+}} // namespace