Hi, maybe you have read about Roger Alsings "Evolution of Mona Lisa" ( http://rogeralsing.com/2008/12/07/genetic-programming-evolution-of-mona-lisa/ ). I am trying to write a plugin (script) for GIMP that does something like this. The plugin should create a lot (maybe 500000 to 1000000) generations of new images and try to resemble the original image as much as possible using only polygons(each generation consists of 1 to 10 images, and "dies" as soon as a new generation is born, so I dont plan on having a million images open at the same time ;). Basically its working like I want - I can create new images, create a selection based on evolved points using gimp_free_select and fill the selection in the right color and opacity. And in the end I get something that looks like Roger Alsings Mona Lisa. ( http://sanguis-lunae.de/Uni/ml5-10000.bmp is what I get after 10000 generations) But its slow. It takes 30 minutes for only 20000 generations. There are so many ways of doing this I cant try them all. So thats my question: What is a good ( the best?) way to draw about 50 shapes, each with 3 - 10 points (I only use polygons, but I might try circles, brush strokes or something else later) over and over again and then compare it to a given image? My ideas so far: Simple but slow: create new image gimp_free_select to make a selection from a list of points set_foreground to choose a color edit_bucket_fill to fill selection copy "goal" image to new layer in this image set layer to DIFFERENCE mode merge read mean value from histogram (this indicates how similar the two layers were ( zero would be perfect) mutate a copy of the polygon image (slightly alter one of the polygons, all other stay the same) and repeat or a second idea: my algorithm only changes one polygon in each new image, so I often draw the same shapes over and over again: create a new layer for each shape bucketfill shapes on their layers merge all 50 layers reuse layers for next generations and so on problem: merging takes a lot of time and the original 50 layers are lost if I dont copy them to a new image before merging, so its just as fast as my first idea And I thought of using path objects for my polygons, but these have to be converted to selections anyway, as they cant be bucketfilled? But maybe there is a much better way? Frederik -- GMX FreeDSL Komplettanschluss mit DSL 6.000 Flatrate und Telefonanschluss für nur 17,95 Euro/mtl.!* http://portal.gmx.net/de/go/dsl02 _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
