Evolving Mona Lisa

Gallery
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Using the so called Continuous Gray Code optimization algorithm to evolve an image of Mona Lisa with circles.
https://www.cs.bham.ac.uk/~jer/papers/ctsgray.pdf
The wide variation of mutation strengths allows it jump out of local minimums better than most simple evolution algorithms.

https://editor.p5js.org/siobhan.491/full/1qRYZ5r0i

I don’t know what the edit link allows, I presume you get a copy of the code!
https://editor.p5js.org/siobhan.491/sketches/1qRYZ5r0i

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Thank you for sharing this!

Are you getting good results? What kind of runtime does it take before something like a figure emerges?

You are viewing / running the original, but editing it locally in the browser. If you want to save / duplicate, it becomes a new sketch – people cannot edit your copy without your username and password.

For example, I selected “Duplicate” and added a counter:

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Okay, got it. It should only take a few minutes to see something happening.

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Odd. The target domain seems to have different dimensions than the source domain.

Screen Shot 2020-03-23 at 9.34.40 PM
Screen Shot 2020-03-23 at 9.34.40 PM818×614 452 KB

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It runs fine on the Palemoon browser. Perhaps it is that high resolution display mode thing again (the 4 pixels per pixel thing!!!) I had some issues around that with my connect 4 game. Or other people had issues I should say.
I certainly don’t have hi-res anything. I have the remnants of a laptop that I have to start with a screwdriver. :grin:

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Yes you see in the costL2 function there is pixel level access:

function costL2() {
  var cost = 0;
  for (var i = 0; i < ml.pixels.length; i += 4) {
    var d = ml.pixels[i] - eg.pixels[i];
    cost += d * d;
    d = ml.pixels[i + 1] - eg.pixels[i + 1];
    cost += d * d;
    d = ml.pixels[i + 2] - eg.pixels[i + 2];
    cost += d * d;
  }
  return cost;
}

That is why in the isometric game I avoided anything to do with pixel access.
I haven’t done much code with JS/P5 and it will take some time until I can get some proficiency. However I really like the online editor and ability to share.

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