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Allow applyColorMap for 1d arrays

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This commit is contained in:
Vincent Rabaud
2026-04-20 13:38:40 +02:00
parent 924a10069c
commit 69020c6517
2 changed files with 14 additions and 1 deletions
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modules/imgproc/src/colormap.cpp
+1 -1
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@@ -735,7 +735,7 @@ namespace colormap
if(src.type() != CV_8UC1 && src.type() != CV_8UC3) if(src.type() != CV_8UC1 && src.type() != CV_8UC3)
CV_Error(Error::StsBadArg, "cv::ColorMap only supports source images of type CV_8UC1 or CV_8UC3"); CV_Error(Error::StsBadArg, "cv::ColorMap only supports source images of type CV_8UC1 or CV_8UC3");
CV_CheckEQ(src.dims, 2, "Not supported"); CV_CheckLE(src.dims, 2, "Not supported");
CV_Assert(_lut.isContinuous()); CV_Assert(_lut.isContinuous());
const int lut_type = _lut.type(); const int lut_type = _lut.type();
modules/imgproc/test/test_color.cpp
+13
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@@ -3296,4 +3296,17 @@ TEST(ImgProc_cvtColor_InvalidNumOfChannels, regression_25971)
} }
} }
TEST(ImgProc_applyColorMap, dimensions)
{
cv::Mat1b src({0, 128, 255});
cv::Mat3b gt = (cv::Mat3b(1, 3) << cv::Vec3b(128, 0, 0), cv::Vec3b(126, 255, 130), cv::Vec3b(0, 0, 128));
cv::Mat3b dst;
cv::applyColorMap(src, dst, cv::COLORMAP_JET);
ASSERT_EQ(cv::norm(dst, gt, NORM_L1), 0);
src = src.t();
gt = gt.t();
cv::applyColorMap(src, dst, cv::COLORMAP_JET);
ASSERT_EQ(cv::norm(dst, gt, NORM_L1), 0);
}
}} // namespace }} // namespace