vendor: OpenCV 5.0.0 snapshot at 755e50675d97db9b7d449d8bd6b09888646f6c6e

modules/quality/test/test_psnr.cpp

@@ -0,0 +1,51 @@
+// 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"
+
+#define TEST_CASE_NAME CV_Quality_PSNR
+
+namespace opencv_test
+{
+namespace quality_test
+{
+
+const cv::Scalar
+    PSNR_EXPECTED_1 = { 14.8347, INFINITY, INFINITY, INFINITY } // matlab: psnr('rock_1.bmp', 'rock_2.bmp') == 14.8347
+    , PSNR_EXPECTED_2 = { 28.4542, 27.7402, 27.2886, INFINITY }  // matlab: psnr('rubberwhale1.png', 'rubberwhale2.png') == BGR: 28.4542, 27.7402, 27.2886,  avg 27.8015
+;
+
+// static method
+TEST(TEST_CASE_NAME, static_)
+{
+    cv::Mat qMat = {};
+    quality_expect_near(quality::QualityPSNR::compute(get_testfile_1a(), get_testfile_1a(), qMat), cv::Scalar(INFINITY, INFINITY, INFINITY, INFINITY)); // ref vs ref == inf
+    check_quality_map(qMat);
+}
+
+// single channel, with/without opencl
+TEST(TEST_CASE_NAME, single_channel)
+{
+    auto fn = []() { quality_test(quality::QualityPSNR::create(get_testfile_1a()), get_testfile_1b(), PSNR_EXPECTED_1); };
+    OCL_OFF( fn() );
+    OCL_ON( fn() );
+}
+
+// multi-channel
+TEST(TEST_CASE_NAME, multi_channel)
+{
+    quality_test(quality::QualityPSNR::create(get_testfile_2a()), get_testfile_2b(), PSNR_EXPECTED_2);
+}
+
+// internal a/b test
+/*
+TEST(TEST_CASE_NAME, performance)
+{
+    auto ref = get_testfile_1a();
+    auto cmp = get_testfile_1b();
+    quality_performance_test("PSNR", [&]() { cv::quality::QualityPSNR::compute(ref, cmp, cv::noArray()); });
+}
+*/
+}
+} // namespace