PImage img;

void setup()
{
 size(877, 500);
 img = loadImage("foto.jpg");
 background(255);
 noStroke();
}

void draw(){
   for (int j = 0; j < height; j += 1)
   {
     for (int i = 0; i < width; i += 1)
     {
       color c = img.get(i, j);
       float red = red(c);
       float green = green(c);
       float blue = blue(c);

      //PAŠVIESINTAS
      if(key == 'a'){
        fill((int)red+80, (int)green+60, (int)blue+20);
        rect(i, j, 1, 1);
      }

      }
  }
}