why i cant turn background to white? urgent!!!

chillyrain

im using an example of FaceDetection in openCV library. i want to retain the face image within green rectangle and change the rest background to white. ideally, fill another picture into background.

but what is wrong with my code? it didnt change the background when i run it. who can help me?

import gab.opencv.*;
import java.awt.Rectangle;

OpenCV opencv;
Rectangle[] faces;
Rectangle[] blank;

void setup() {
  opencv = new OpenCV(this, "test.jpg");
  size(opencv.width, opencv.height);

  opencv.loadCascade(OpenCV.CASCADE_FRONTALFACE);  
  faces = opencv.detect();
}

void draw() {
  image(opencv.getInput(), 0, 0);

  loadPixels();
  for (int i=0; i>faces.length; i++) {
    int loc= faces[i].x + faces[i].y * opencv.width ;
    pixels[loc]=#FFFFFF;
  }
  updatePixels();


  for (int i = 0; i < faces.length; i++) {
    rect(faces[i].x, faces[i].y, faces[i].width, faces[i].height);
  }
  noFill();
  stroke(0, 255, 0);
  strokeWeight(3);
}

Chrisir

in for-loop maybe

i <

it's "do it as long as ... is true."

also please read sticky post on how format code in your post

;-)

lmccart

this question belongs in the Processing programming questions section, this section is for p5.js questions. I would retag it so the Processing users take a look.

GoToLoop

@lmccart, gonna do it now. Although it's not even "Programming Questions", but more exactly "Library Questions"!