[atum47]

I was working on a image editor on the browser, https://victorribeiro.com/customFilter

Right now the neat future it have is the ability of running custom filters of varied window size of images, and use custom formulas to blend several images

I don't have a tutorial at hand on how to use it, but I have a YouTube video where I show some of its features

https://youtube.com/playlist?list=PL3pnEx5_eGm9rVr1_u1Hm_LK6...

[atum47]

At some point I would like to add more features as you described in your article; feature detection, image stitching...

Here's the source code if anyone's interested https://github.com/victorqribeiro/customFilter

[smusamashah]

I vaguely remember XnView having this matrix based custom filters.