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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+/*
+ * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+*/
+
+#include "test_precomp.hpp"
+
+namespace opencv_test { namespace {
+
+class DCTExtTest : public ::testing::TestWithParam<cv::Size> {};
+
+TEST_P(DCTExtTest, forward)
+{
+    Size size = GetParam();
+
+    RNG& rng = cv::theRNG();
+    Mat src(size, CV_8UC1);
+    cvtest::randUni(rng, src, Scalar::all(0), Scalar::all(255));
+    Mat srcFloat;
+    src.convertTo(srcFloat, CV_32F);
+
+    Mat dst, ref;
+    cv::fastcv::DCT(src, dst);
+
+    cv::dct(srcFloat, ref);
+
+    Mat dstFloat;
+    ref.convertTo(dstFloat, CV_32F);
+
+    double normInf = cvtest::norm(dstFloat, ref, cv::NORM_INF);
+    double normL2  = cvtest::norm(dstFloat, ref, cv::NORM_L2)  / dst.size().area();
+
+    if (cvtest::debugLevel > 0)
+    {
+        std::cout << "dst:" << std::endl << dst << std::endl;
+        std::cout << "ref:" << std::endl << ref << std::endl;
+    }
+
+    EXPECT_EQ(normInf, 0);
+    EXPECT_EQ(normL2, 0);
+}
+
+TEST_P(DCTExtTest, inverse)
+{
+    Size size = GetParam();
+
+    RNG& rng = cv::theRNG();
+    Mat src(size, CV_8UC1);
+    cvtest::randUni(rng, src, Scalar::all(0), Scalar::all(256));
+
+    Mat srcFloat;
+    src.convertTo(srcFloat, CV_32F);
+
+    Mat fwd, back;
+    cv::fastcv::DCT(src, fwd);
+    cv::fastcv::IDCT(fwd, back);
+    Mat backFloat;
+    back.convertTo(backFloat, CV_32F);
+
+    Mat fwdRef, backRef;
+    cv::dct(srcFloat, fwdRef);
+    cv::idct(fwdRef, backRef);
+
+    double normInf = cvtest::norm(backFloat, backRef, cv::NORM_INF);
+    double normL2  = cvtest::norm(backFloat, backRef, cv::NORM_L2)  / src.size().area();
+
+    if (cvtest::debugLevel > 0)
+    {
+        std::cout << "src:"     << std::endl << src     << std::endl;
+        std::cout << "back:"    << std::endl << back    << std::endl;
+        std::cout << "backRef:" << std::endl << backRef << std::endl;
+    }
+
+    EXPECT_LE(normInf, 7.00005);
+    EXPECT_LT(normL2,  0.13);
+}
+
+INSTANTIATE_TEST_CASE_P(FastCV_Extension, DCTExtTest, ::testing::Values(Size(8, 8), Size(128, 128), Size(32, 256), Size(512, 512)));
+
+}} // namespaces opencv_test, ::