[PD] mean color value of a video grid

Mathieu Bouchard matju at artengine.ca
Fri Sep 1 18:47:26 CEST 2006


On Fri, 1 Sep 2006, Mathieu Bouchard wrote:
> On Fri, 1 Sep 2006, vincent rioux wrote:
>> i was refering to a possibly non-rectangular shape. i am not used to 
>> gridflow but i would guess that it is possible to take the mean color over 
>> a group of pixels.

actually the fastest way to do this in GridFlow is to use [#store]. This 
one is hard to beat. You put your image in the [#store], then you recall 
areas of it by sending a list of positions (a N-by-2 grid) and you will 
get a list of RGB pixels (a N-by-3 grid), which you can then average by 
using [#fold + (0 0 0)] and [# /].

  _ _ __ ___ _____ ________ _____________ _____________________ ...
| Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju
| Freelance Digital Arts Engineer, Montréal QC Canada


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