Please excuse my ignorance, I'm very new here.

What I'm trying to achieve is very simple. Update a webcam feed for only pixels that have a luminance value above a given threshold. It looks exactly how I expect when I rut it. But the problem is when I write to disk using saveFrame. It seems to save only what is in the Buffer. Any ideas? Thanks in advance.


import processing.video.*;
Capture myCapture;

void setup()
{
 size(640, 480);
 colorMode(RGB, 1.0);
 myCapture = new Capture(this, width, height, 24);
}

 void captureEvent(Capture myCapture) {
 myCapture.read();
}

void draw() {

image(myCapture, 0, 0);
int[] newPixels = new int[width*height];
loadPixels();

for (int i = 0; i < height*width; i++) {
 if (brightness(pixels[i]) > 0.50) {
   newPixels[i] = pixels[i];
   }
}

arraycopy(newPixels, pixels);
updatePixels();
}

void keyPressed() {  
 saveFrame("renders/test-####.tif");  
}