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Merge pull request #20793 from tomoaki0705:fixGaussianOverflow

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Alexander Alekhin
2021-10-01 15:53:15 +00:00
parent 4d587c341b 1e74f5850b
commit a0cf8c322d
3 changed files with 17 additions and 3 deletions
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11
modules/imgproc/test/test_smooth_bitexact.cpp
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@@ -249,4 +249,15 @@ TEST(GaussianBlur_Bitexact, regression_9863)
checkGaussianBlur_8Uvs32F(src8u, src32f, 151, 30);
}
TEST(GaussianBlur_Bitexact, overflow_20792)
{
Mat src(128, 128, CV_16UC1, Scalar(255));
Mat dst;
double sigma = theRNG().uniform(0.0, 0.2); // a peaky kernel
GaussianBlur(src, dst, Size(7, 7), sigma, 0.9);
int count = (int)countNonZero(dst);
int nintyPercent = (int)(src.rows*src.cols * 0.9);
EXPECT_GT(count, nintyPercent);
}
}} // namespace