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  • Published 25 Jan 2022

Alternate kernel for Sharpen compositor node

Currently, Blender has a Sharpen filter in the Filter compositor node. However, the default kernel for the sharpen filter is a very extreme one that, frankly, doesn't look very good for most of the things that I've tried using it for.

-1, -1, -1
-1,  9, -1
-1, -1, -1

I propose that there be an alternate kernel for the Sharpen filter:

0  -1  0
-1  5 -1
0  -1  0

The original sharpen filter could be called "Box", while the new one could be called "Diamond" (based on the shape of the kernel). Below is a side-by-side of the two different kernels vs. the original image. Note the harsh aliasing in the current kernel.

sharpen kernel.png

Image Kernels online sandbox: setosa.io/ev/image-kernels/

100%

Development Status: Done

Upvote 22 Downvote 0
cmbasnett
25 Jan 2022

1 Comment

jeroenbakker

I will add a first good ticket for this in the tracker! It is a small ticket that new contributors can work on. Thanks for posting it!

developer.blender.org/T95275

2