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// 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(Mat& src)
{
src = Mat::zeros(Size(256, 256), 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);
}
int src_pixels = countNonZero(src);
EXPECT_GT(src_pixels, 0);
return src_pixels;
}
TEST(ximgproc_Thinning, simple_ZHANGSUEN)
{
Mat src;
int src_pixels = createTestImage(src);
Mat dst;
thinning(src, dst, THINNING_ZHANGSUEN);
int dst_pixels = countNonZero(dst);
EXPECT_LE(dst_pixels, src_pixels);
#if 0
imshow("src", src); imshow("dst", dst); waitKey();
#endif
}
TEST(ximgproc_Thinning, simple_GUOHALL)
{
Mat src;
int src_pixels = createTestImage(src);
Mat dst;
thinning(src, dst, THINNING_GUOHALL);
int dst_pixels = countNonZero(dst);
EXPECT_LE(dst_pixels, src_pixels);
#if 0
imshow("src", src); imshow("dst", dst); waitKey();
#endif
}
}} // namespace
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