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"
+
+#include <bitset>
+
+namespace opencv_test { namespace {
+
+class CV_AverageHashTest : public cvtest::BaseTest
+{
+public:
+    CV_AverageHashTest();
+    ~CV_AverageHashTest();
+protected:
+    void run(int /* idx */);
+};
+
+CV_AverageHashTest::CV_AverageHashTest(){}
+CV_AverageHashTest::~CV_AverageHashTest(){}
+
+void CV_AverageHashTest::run(int )
+{
+    cv::Mat const input = (cv::Mat_<uchar>(8, 8) <<
+                           1, 5, 4, 6, 3, 2, 7, 8,
+                           2, 4, 8, 9, 2, 1, 4, 3,
+                           3, 4, 5, 7, 9, 8, 7, 6,
+                           1, 2, 3, 4, 5, 6, 7, 8,
+                           8, 7, 2, 3, 6, 4, 5, 1,
+                           3, 4, 1, 2, 9, 8, 4, 2,
+                           6, 7, 8, 9, 7, 4, 3, 2,
+                           8, 7, 6, 5, 4, 3, 2, 1);
+    cv::Mat hash;
+    cv::img_hash::averageHash(input, hash);
+    bool const expectResult[] =
+    {
+        0,0,0,1,0,0,1,1,
+        0,0,1,1,0,0,0,0,
+        0,0,0,1,1,1,1,1,
+        0,0,0,0,0,1,1,1,
+        1,1,0,0,1,0,0,0,
+        0,0,0,0,1,1,0,0,
+        1,1,1,1,1,0,0,0,
+        1,1,1,0,0,0,0,0
+    };
+    uchar const *hashPtr = hash.ptr<uchar>(0);
+    for(int i = 0; i != hash.cols; ++i)
+    {
+        std::bitset<8> const bits = hashPtr[i];
+        for(int j = 0; j != 8; ++j)
+        {
+            EXPECT_EQ(bits[j], expectResult[i*8+j]);
+        }
+    }
+}
+
+TEST(average_hash_test, accuracy) { CV_AverageHashTest test; test.safe_run(); }
+
+}} // namespace