Is there a method to apply an arbitrary laplacian matrix to image? #836
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jcogs-design
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The GD2 'sharpen' effect and the 'border detection' filter both use imageconvolution to apply a laplacian filter to an image.
But the matrix used is fixed.
Is there a method defined that allows for an arbitrary matrix to be applied as a filter, or the values used in the 'sharpen' filter to be changed?
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