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imgproc: catch NaNs in clip(), use table index debug check

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- no NaN propagation guarantee
This commit is contained in:
Alexander Alekhin
2021-12-11 17:28:21 +00:00
parent 16b674b984
commit 72c55b56f2
2 changed files with 26 additions and 1 deletions
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modules/imgproc/test/test_color.cpp
+20
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@@ -3117,5 +3117,25 @@ TEST(ImgProc_cvtColorTwoPlane, y_plane_padding_differs_from_uv_plane_padding_170
EXPECT_DOUBLE_EQ(cvtest::norm(rgb_reference_mat, rgb_uv_padded_mat, NORM_INF), .0);
}
TEST(ImgProc_RGB2Lab, NaN_21111)
{
const float kNaN = std::numeric_limits<float>::quiet_NaN();
cv::Mat3f src(1, 111, Vec3f::all(kNaN)), dst;
// Make some entries with only one NaN.
src(0, 0) = src(0, 27) = src(0, 81) = src(0, 108) = cv::Vec3f(0, 0, kNaN);
src(0, 1) = src(0, 28) = src(0, 82) = src(0, 109) = cv::Vec3f(0, kNaN, 0);
src(0, 2) = src(0, 29) = src(0, 83) = src(0, 110) = cv::Vec3f(kNaN, 0, 0);
EXPECT_NO_THROW(cvtColor(src, dst, COLOR_RGB2Lab));
#if 0 // no NaN propagation guarantee
for (int i = 0; i < 20; ++i)
{
for (int j = 0; j < 3; ++j)
{
EXPECT_TRUE(cvIsNaN(dst(0, i)[j]));
}
}
#endif
}
}} // namespace