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Expose erode and dilate operations #4243

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This commit is contained in:
Quentin Pinçon
2025-03-27 12:59:02 +00:00
committed by Lovell Fuller
parent 03e1b19764
commit 031c808aa5
17 changed files with 249 additions and 0 deletions
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22
src/operations.cc
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@@ -472,4 +472,26 @@ namespace sharp {
}
}
/*
* Dilate an image
*/
VImage Dilate(VImage image, int const width) {
int const maskWidth = 2 * width + 1;
VImage mask = VImage::new_matrix(maskWidth, maskWidth);
return image.morph(
mask,
VIPS_OPERATION_MORPHOLOGY_DILATE).invert();
}
/*
* Erode an image
*/
VImage Erode(VImage image, int const width) {
int const maskWidth = 2 * width + 1;
VImage mask = VImage::new_matrix(maskWidth, maskWidth);
return image.morph(
mask,
VIPS_OPERATION_MORPHOLOGY_ERODE).invert();
}
} // namespace sharp