• fullscreen
  • Alcys_convolution0_7.pde
  • //convolution de jacques maire
    PImage img;
    void setup()
    {
    
         size(400, 400);
         frameRate(80);    
         img = loadImage("image2.png");
         image(img, 0, 0, width, height);
         img.loadPixels();
         for (int x = 0; x< width; x++)
              for (int y = 0; y< height; y++)
              {
                   float xx=sin(((float)x-width/2.0)/width);
                   float yy=cos(((float)y-height/2.0)/height);
                   int col= img.pixels[y*width + x] ;
                   float rouge=red(col);
                   float vert=green(col);
                   float bleu=blue(col);
                   img.pixels[y*width + x] =
                        color(constrain(rouge, 20, 225), constrain(vert, 20, 225), constrain(bleu, 20, 225), constrain(alpha(col), 50, 250) );
              }
         img.updatePixels();
    }
    
    
    
    void draw()
    { 
         background(0, 0, 255);
         img.loadPixels();
         for (int x = 1; x< width-1; x++)
              for (int y = 1; y< height-1; y++)
              {
    
                   int src= img.pixels[y*width + x];
                   int but =  (int)((
                   img.pixels[y*width + x]*5.60012 +
                        img.pixels[y*width + x-1]*0.0001 +
                        img.pixels[y*width + x+1]*0.0001 +
                        img.pixels[(y-1)*width + x]*0.0001+
                        img.pixels[(y+1)*width + x]*0.0001 ) / 5.6004001);
                   img.pixels[y*width + x]=couleur(src, but);
              }
         img.updatePixels();
         image(img, 0, 0);
    }
    
    
    int couleur(int s, int b) {
         return color(red(s)*0.4+red(b)*0.6, green(s)*0.4+green(b)*0.6, blue(s)*0.4+blue(b)*0.6, alpha(s)*0.4+alpha(b)*0.6);
    }
    
    

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    about this sketch

    This sketch is running as Java applet, exported from Processing.

    license

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    jacques maire

    Betty Blues

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    convolution

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