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
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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 {
+
+TEST(RadonTransformTest, output_size)
+{
+    Mat src(Size(256, 256), CV_8U, Scalar(0));
+    circle(src, Point(128, 128), 64, Scalar(255), FILLED);
+    Mat radon;
+    cv::ximgproc::RadonTransform(src, radon);
+
+    EXPECT_EQ(363, radon.rows);
+    EXPECT_EQ(180, radon.cols);
+
+    cv::ximgproc::RadonTransform(src, radon, 1, 0, 180, true);
+
+    EXPECT_EQ(256, radon.rows);
+    EXPECT_EQ(180, radon.cols);
+}
+
+TEST(RadonTransformTest, output_type)
+{
+    Mat src_int(Size(256, 256), CV_8U, Scalar(0));
+    circle(src_int, Point(128, 128), 64, Scalar(255), FILLED);
+    Mat radon, radon_norm;
+    cv::ximgproc::RadonTransform(src_int, radon);
+    cv::ximgproc::RadonTransform(src_int, radon_norm, 1, 0, 180, false, true);
+
+    EXPECT_EQ(CV_32SC1, radon.type());
+    EXPECT_EQ(CV_8U, radon_norm.type());
+
+    Mat src_float(Size(256, 256), CV_32FC1, Scalar(0));
+    Mat src_double(Size(256, 256), CV_32FC1, Scalar(0));
+    cv::ximgproc::RadonTransform(src_float, radon);
+    cv::ximgproc::RadonTransform(src_float, radon_norm, 1, 0, 180, false, true);
+    EXPECT_EQ(CV_64FC1, radon.type());
+    EXPECT_EQ(CV_8U, radon_norm.type());
+    cv::ximgproc::RadonTransform(src_double, radon);
+    EXPECT_EQ(CV_64FC1, radon.type());
+    EXPECT_EQ(CV_8U, radon_norm.type());
+}
+
+TEST(RadonTransformTest, accuracy_by_pixel)
+{
+    Mat src(Size(256, 256), CV_8U, Scalar(0));
+    circle(src, Point(128, 128), 64, Scalar(255), FILLED);
+    Mat radon;
+    cv::ximgproc::RadonTransform(src, radon);
+
+    ASSERT_EQ(CV_32SC1, radon.type());
+
+    EXPECT_EQ(0, radon.at<int>(0, 0));
+
+    EXPECT_LT(18000, radon.at<int>(128, 128));
+    EXPECT_GT(19000, radon.at<int>(128, 128));
+}
+
+TEST(RadonTransformTest, accuracy_uchar)
+{
+    Mat src(Size(10, 10), CV_8UC1, Scalar(1));
+    cv::Mat radon;
+    ximgproc::RadonTransform(src, radon, 45, 0, 180, false, false);
+
+    EXPECT_EQ(100, sum(radon.col(0))[0]);
+}
+
+TEST(RadonTransformTest, accuracy_float)
+{
+    Mat src(Size(10, 10), CV_32FC1, Scalar(1.1));
+    cv::Mat radon;
+    ximgproc::RadonTransform(src, radon, 45, 0, 180, false, false);
+
+    EXPECT_LT(109, sum(radon.col(0))[0]);
+    EXPECT_GT(111, sum(radon.col(0))[0]);
+}
+
+} }