added unit test for HoughCircles

2024-11-29 22:00:25 +08:00 · 2012-12-24 22:53:27 -05:00 · 2012-12-24 22:53:27 -05:00 · 78202100df
commit 78202100df
parent ecb6c20915
1 changed files with 111 additions and 0 deletions
--- a/modules/ocl/test/test_hough.cpp
+++ b/modules/ocl/test/test_hough.cpp
@ -0,0 +1,111 @@
+/*M///////////////////////////////////////////////////////////////////////////////////////
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+
+#include "precomp.hpp"
+
+#ifdef HAVE_OPENCL
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////
+// HoughCircles
+
+PARAM_TEST_CASE(HoughCircles, cv::Size)
+{
+    static void drawCircles(cv::Mat& dst, const std::vector<cv::Vec3f>& circles, bool fill)
+    {
+        dst.setTo(cv::Scalar::all(0));
+
+        for (size_t i = 0; i < circles.size(); ++i)
+            cv::circle(dst, cv::Point2f(circles[i][0], circles[i][1]), (int)circles[i][2], cv::Scalar::all(255), fill ? -1 : 1);
+    }
+};
+
+TEST_P(HoughCircles, Accuracy)
+{
+    const cv::Size size = GET_PARAM(0);
+
+    const float dp = 2.0f;
+    const float minDist = 10.0f;
+    const int minRadius = 10;
+    const int maxRadius = 20;
+    const int cannyThreshold = 100;
+    const int votesThreshold = 15;
+
+    std::vector<cv::Vec3f> circles_gold(4);
+    circles_gold[0] = cv::Vec3i(20, 20, minRadius);
+    circles_gold[1] = cv::Vec3i(90, 87, minRadius + 3);
+    circles_gold[2] = cv::Vec3i(30, 70, minRadius + 8);
+    circles_gold[3] = cv::Vec3i(80, 10, maxRadius);
+
+    cv::Mat src(size, CV_8UC1);
+    drawCircles(src, circles_gold, true);
+    cv::ocl::oclMat d_src(src);
+
+    cv::ocl::oclMat d_circles;
+    cv::ocl::HoughCircles(d_src, d_circles, CV_HOUGH_GRADIENT, dp, minDist, cannyThreshold, votesThreshold, minRadius, maxRadius);
+    ASSERT_TRUE(d_circles.rows > 0);
+
+    cv::Mat circles;
+    d_circles.download(circles);
+
+    for (int i = 0; i < circles.cols; ++i)
+    {
+        cv::Vec3f cur = circles.at<cv::Vec3f>(i);
+
+        bool found = false;
+
+        for (size_t j = 0; j < circles_gold.size(); ++j)
+        {
+            cv::Vec3f gold = circles_gold[j];
+
+            if (std::fabs(cur[0] - gold[0]) < minDist && std::fabs(cur[1] - gold[1]) < minDist && std::fabs(cur[2] - gold[2]) < minDist)
+            {
+                found = true;
+                break;
+            }
+        }
+
+        ASSERT_TRUE(found);
+    }
+}
+
+INSTANTIATE_TEST_CASE_P(Hough, HoughCircles, DIFFERENT_SIZES);
+
+#endif // HAVE_OPENCL