vendor: OpenCV 5.0.0 snapshot at 755e50675d97db9b7d449d8bd6b09888646f6c6e

modules/xphoto/test/test_hdr.cpp

@@ -0,0 +1,71 @@
+// 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 {
+
+using namespace cv::xphoto;
+
+#ifdef OPENCV_ENABLE_NONFREE
+
+void loadImage(string path, Mat &img)
+{
+    img = imread(path, -1);
+    ASSERT_FALSE(img.empty()) << "Could not load input image " << path;
+}
+
+void checkEqual(Mat img0, Mat img1, double threshold, const string& name)
+{
+    double max = 1.0;
+    minMaxLoc(abs(img0 - img1), NULL, &max);
+    ASSERT_FALSE(max > threshold) << "max=" << max << " threshold=" << threshold << " method=" << name;
+}
+
+TEST(Photo_Tonemap, Durand_regression)
+{
+    string test_path = string(cvtest::TS::ptr()->get_data_path()) + "cv/hdr/tonemap/";
+
+    Mat img, expected, result;
+    loadImage(test_path + "image.hdr", img);
+    float gamma = 2.2f;
+
+    Ptr<TonemapDurand> durand = createTonemapDurand(gamma);
+    durand->process(img, result);
+    loadImage(test_path + "durand.png", expected);
+    result.convertTo(result, CV_8UC3, 255);
+    checkEqual(result, expected, 3, "Durand");
+}
+
+TEST(Photo_Tonemap, Durand_property_regression)
+{
+    const float gamma = 1.0f;
+    const float contrast = 2.0f;
+    const float saturation = 3.0f;
+    const float sigma_color = 4.0f;
+    const float sigma_space = 5.0f;
+
+    const Ptr<TonemapDurand> durand1 = createTonemapDurand(gamma, contrast, saturation, sigma_color, sigma_space);
+    ASSERT_EQ(gamma, durand1->getGamma());
+    ASSERT_EQ(contrast, durand1->getContrast());
+    ASSERT_EQ(saturation, durand1->getSaturation());
+    ASSERT_EQ(sigma_space, durand1->getSigmaSpace());
+    ASSERT_EQ(sigma_color, durand1->getSigmaColor());
+
+    const Ptr<TonemapDurand> durand2 = createTonemapDurand();
+    durand2->setGamma(gamma);
+    durand2->setContrast(contrast);
+    durand2->setSaturation(saturation);
+    durand2->setSigmaColor(sigma_color);
+    durand2->setSigmaSpace(sigma_space);
+    ASSERT_EQ(gamma, durand2->getGamma());
+    ASSERT_EQ(contrast, durand2->getContrast());
+    ASSERT_EQ(saturation, durand2->getSaturation());
+    ASSERT_EQ(sigma_color, durand2->getSigmaColor());
+    ASSERT_EQ(sigma_space, durand2->getSigmaSpace());
+}
+
+#endif // OPENCV_ENABLE_NONFREE
+
+}} // namespace