input: maaany images (1.jpg to 5000.jpg)
what should be the output: 1.jpg, 1+2.jpg, 1+2+3.jpg... (each frame should be an overlay of 1 to 5000 images merging them to their average)

Running this I get an ArrayIndexOutOfBounds:0 Error in the marked line.
I coded this more or less blind: without much clue of processing in general and without any prove that this *could* work. If someone could proofread this he'd make me a happier person :)


void setup() {//runs once

 size(100, 100);// Set the window size in pixels
 noLoop();
 frameRate(1);//per second
}


 //vars//////
 int count = 0;
 int anzahl_bilder = 0;
 PImage akt_bild;
 int r = 0;
 int g = 0;
 int b = 0;
 float[] allr = new float[width*height];
 float[] allg = new float[width*height];
 float[] allb = new float[width*height];
 /////////////
 
 
void draw() {// frame by frame
 background(255);
 
//    if(count < 10) {            //framestopper and layering progress
//    count = count + 1;
//  } else {
//    noLoop();
//  }
 
 count = 5; //number of overlayed images (for now)
 anzahl_bilder = count;


 float[][][] alle_bilder = new float[anzahl_bilder][3][width*height]; //all_images[number of overlays][r g b][num of pixels]
 for (int bild = 0; bild < anzahl_bilder; ++bild) { //
   akt_bild = loadImage((bild+1) + ".jpg"); //load image to add (1 to x.jpg are in the data folder)
   loadPixels(); //get pixels
   for (int kanal = 0; kanal < 3; ++kanal) { // rgb choice
     for (int pixel=0; pixel < width*height; ++pixel) {// pixel "adress"
 
       if (kanal == 0) alle_bilder[bild][kanal][pixel] = (pixels[pixel] >> 16) & 0xFF; //0red    //extracting r g b to all_images
       if (kanal == 1) alle_bilder[bild][kanal][pixel] = (pixels[pixel] >> 8) & 0xFF;  //1green
       if (kanal == 2) alle_bilder[bild][kanal][pixel] = pixels[pixel] & 0xFF;         //2blue
       }
     }
   }  //und dann halt mit alle_bilder arbeiten
 
 for (int bild = 0; bild < anzahl_bilder; ++bild) {  
     for (int pixel=0; pixel < width*height; ++pixel) {// adding all images to one "ultra bright" image
        allr[pixel] = allr[pixel]+alle_bilder[bild][0][pixel]; //////////ERROR OCCURES HERE//////////////
        allg[pixel] = allg[pixel]+alle_bilder[bild][1][pixel];
        allb[pixel] = allb[pixel]+alle_bilder[bild][2][pixel];
 
     }
 }
 //color pink = color(255, 102, 204);
 for (int i = 0; i < (width*height); i++) {//calculating them down to  normal (<255) and even numbers
   r = round(allr[i]/anzahl_bilder);
   g = round(allg[i]/anzahl_bilder);
   b = round(allb[i]/anzahl_bilder);
   pixels[i] = color(r, g, b); ///drawing to pixels
 }
 updatePixels();//draw on screen
 

 
 
     saveFrame("data/merge_#####.tif");//output a snapshot
 loop();
}


btw: If this works I will do the same with sound: voice + more and more voice = noise
noise + more and more noise = silence (average of random = 0)
should be even easyier with *wav*s , right?

Oh and sry for the repost I did

edit: width and heigh are 0 nefore the setup runs %)