Hi, i've just started programming in Processing. I tried to make my own sort of ambilight with an LED-controller called Chromoflex.

Well everything works the only problem is that it seems to have a delay of about half a second and it doesnt matter if I increase or decrease the resolution the framerate always seems to be around 4-5 fps.

Can anyone help speed up my program?

Keep in mind that I'm not a 'real' programmer.
Here's the code:

-------------------------------------------------------


import processing.serial.*;

Serial myPort;
int[] reset = {202,0,0,0,0,0,254,140,240};
int[] kleur = {202,0,0,0,0,5,126,0,255,0,0,100};
int[] userprog = {202,0,0,0,0,2,126,18,1,149,136};

int hoogte = 60;
int breedte = 80;
int a=0;
int tussen = 0;
int crc = 65535;
int test = 65535;
int crc16 = 0;
int crc16_1 = 0;
int crc16_2 = 0;

float rood_aanpassing = 1;
float groen_aanpassing = 0.7;
float blauw_aanpassing = 0.2;

PImage screenshot;
int rood_gem = 0;
int groen_gem = 0;
int blauw_gem = 0;
int eenmaal = 0;

void reset_chromo(){
 for(int i=0;i<reset.length;i++){
   myPort.write(reset[i]);
 }
 delay(1000);
 overnemen();
}

void overnemen(){
 for(int i=0;i<userprog.length;i++){
   myPort.write(userprog[i]);
 }
}

void dec_to_hex(){
 
 int hexarray[] = {0,0,0,0};
 int b = 3;
 
 while(crc>16){
   int c = crc%16;
   int d = crc - c;
   hexarray[b] = c;
   crc = d / 16;
   b--;
 }
 hexarray[b] = crc;
 crc16_1 = hexarray[0]*16 + hexarray[1];
 crc16_2 = hexarray[2]*16 + hexarray[3];
   
 for( int q=0;q<kleur.length;q++){
   myPort.write(kleur[q]);
 }
 myPort.write(crc16_1);
 myPort.write(crc16_2);
}

void bereken_crc16(){
 crc = 65535;
 for(int i=0;i<kleur.length;i++){
   
   tussen = kleur[i]^crc;
   crc = tussen;
   for(int z=0;z<8;z++){
     
     if((crc&1)==1){
       
       int a = crc >> 1;
       crc = a^40961;
     
   } else {
       tussen = crc;
       crc = tussen >> 1;
     }
   }
 }
}

void setup() {
 frameRate(50);
 size(breedte,hoogte);
 myPort = new Serial(this,"COM9",9600);
 reset_chromo();
}

void screencapture(){
 try {
  Robot robot = new Robot();
  screenshot = new PImage(robot.createScreenCapture(new Rectangle(0,0,screen.width,screen.height)));

} catch (AWTException e) {
}
}
 

void draw() {
screencapture();
image(screenshot, 0, 0, width, height);
loadPixels();
for(int b=0;b<(hoogte+1);b++){
  for(int c=0;c<(breedte+1);c++){
    color currColor = pixels[c+(hoogte*b)];
    rood_gem+=red(currColor);
    groen_gem+=green(currColor);
    blauw_gem+=blue(currColor);
  }
}


rood_gem/=(hoogte*breedte);
groen_gem/=(hoogte*breedte);
blauw_gem/=(hoogte*breedte);

rood_gem*=rood_aanpassing;
groen_gem*=groen_aanpassing;
blauw_gem*=blauw_aanpassing;

kleur[7] = 4;
kleur[8] = rood_gem;
kleur[9] = groen_gem;
kleur[10] = blauw_gem;

overnemen();
bereken_crc16();
dec_to_hex();

kleur[7] = 0;

bereken_crc16();
dec_to_hex();

rood_gem = 0;
groen_gem = 0;
blauw_gem = 0;
println(frameRate);
}