Face blur

faceblur.pde

// Get OpenCV here: http://ubaa.net/shared/processing/opencv/

import hypermedia.video.*;
import java.awt.Rectangle;


OpenCV opencv;

// contrast/brightness values
int contrast_value    = 0;
int brightness_value  = 0;


void setup() {

  size( 640, 480 );

  opencv = new OpenCV( this );
  opencv.capture( width, height );                   // open video stream
  opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT_TREE );  // load detection description, here-> front face detection : "haarcascade_frontalface_alt.xml"


  // print usage
  println( "Drag mouse on X-axis inside this sketch window to change contrast" );
  println( "Drag mouse on Y-axis inside this sketch window to change brightness" );
}


public void stop() {
  opencv.stop();
  super.stop();
}



void draw() {

  // grab a new frame
  // and convert to gray
  opencv.read();
  // opencv.convert( GRAY );
  opencv.contrast( contrast_value );
  opencv.brightness( brightness_value );

  // proceed detection
  Rectangle[] faces = opencv.detect( 1.2, 2, OpenCV.HAAR_DO_CANNY_PRUNING, 40, 40 );

  // draw face area(s)
  //fill(255,0,255);
   noFill();
   stroke(255,0,0);
  for ( int i=0; i<faces.length; i++ ) {
    rect( faces[i].x, faces[i].y, faces[i].width, faces[i].height ); 
    opencv.blur(OpenCV.BLUR, 9);

  }
  
  // display the image
  image( opencv.image(), 0, 0 );
      opencv.ROI(null);
}



/**
 * Changes contrast/brigthness values
 */
void mouseDragged() {
  contrast_value   = (int) map( mouseX, 0, width, -128, 128 );
  brightness_value = (int) map( mouseY, 0, width, -128, 128 );
}