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Index › Programming Questions & Help › Programs › Seeding a 1d CA with a 2d image
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Seeding a 1d CA with a 2d image? (Read 319 times)
weevil
Seeding a 1d CA with a 2d image?
Jan 9th, 2009, 6:00pm  
I'm a beginning processing user, I'm interested in using cellular automata to filter images-
Some examples:
http://onecm.com/sketches/mycelium/
http://www.flong.com/projects/zoo/

I've been using a mac node-based image editor called Toolbox, which lets you feed an image through a wolfram 1d cellular automata patch to produce some interesting results. I would like to learn to do the same thing programmatically in processing, but the problem is that the Wolfram ruleset is one dimensional- so I would have to find a way to pipe the bright pixels of the image in line by line as individual arrays or something. I'm just not advanced enough yet to figure out an elegant way of doing it.

Does anyone know what approach I should take?
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NoahBuddy
Re: Seeding a 1d CA with a 2d image?
Reply #1 - Jan 11th, 2009, 11:48am  
You can get a quick 1D array of image data by using pixels[].
http://processing.org/reference/pixels.html

Something like this:

Quote:
PImage pic;

void setup() {
 size(400, 400); //set to whatever you like, I assumed pic was the same size

 //pic = new PImage(400, 400); //this would give you a blank  picture

 pic = loadImage("somepicture.jpg")
}

void draw() {

 for (int i=0; i<pic.pixels.length; i++) {
   //do something to the data
   
   pic.pixels[i] = color(0, 128, 0);//turns green :]
 }

 //Show the results
 image(pic, 0, 0);

}
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weevil
Re: Seeding a 1d CA with a 2d image?
Reply #2 - Jan 11th, 2009, 5:16pm  
Thanks!
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