Developing a Mathmap filter just as a coding exercise.

It works in a similar but (hopefully more powerful) way to the existing "Mosiac" and "Grid" filters working in combination to produce a pixelated image with a border - a bit like an old TV close up.

It's capable of splitting the image into cells of any size, either square or rectangular, applying a variably sized border and can be used with a selection and/or mask to access some it's more enhanced features.

If there's enough interest I'll release it when I've finished coding/testing it - might be a while as I'm still very much on the learning curve (only been playing with Mathlab for a couple of days).

Have a look at the samples I've generated as I'm debugging it.

Bear in mind the filter has rendered these with no additional work from me in Gimp post render, all I had to do was provide an initial image, a selection/mask in some cases and then play with the sliders

Please let me know what you think. What extra features I could add? Like I say I want the coding practice

Started with this input image:


This is the filters basic output and a "Close Up TV" version some noise and a contrast boost in the filter pipeline..


More to follow..

..Lassoo the background, play with the sliders a bit and things get more interesting..


More to follow! Sorry about repeated posts but I've done a lot of playing erm.. testing today ..

how you could run mathlab filter on gimp ?

Btw i think some folks here would love circular cells

..Option to get rid of "jaggies"..


Ok, to close, I've butchered my original image with the Brush and Colorised in Gimp - what a mess..

Oops said "Mathlab" instead of Mathmap in my OP. Edited.
I'm running Mathmap 1.3.5 as a Gimp 2.6 Plugin on Windows at the mo.
I don't think there's a standalone version for Windows (put me straight if I'm wrong). I think I'm right in saying the plugin only interprets the filter scripts as opposed to compiling them, so is markedly slower. That's one thing about my Cellular filter - it can really chug. Upto 16x16 pixel cells and it's fine (done in seconds). Crank up the cell size up and it can take minutes to render - this destroys the "creative" flow in Composer, you can't just whiz the sliders around and see what happens. I'll have to work on a fast preview function at some stage.

@Photocomix: Was hoping to provide other shapes including circles, but need to write some proper tessellation code, the grid is just a hack at the moment.

If you could post/link to pictures of what you have in mind with the circles (i.e in terms of how they're packed) it might give my brain a jump start. Meantime I'll go check out Lawnmower Man on IMDB