SMFA12_intro2hack_face_detection_v3

face_detection_v3

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

float fI;
float fO;
float fOrvs;

OpenCV opencv;

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


void setup() {

    size(500, 500);
    background(255);
    opencv = new OpenCV(this); //start opencv
    opencv.capture(width, height); // open capture stream
    opencv.cascade(OpenCV.CASCADE_FRONTALFACE_ALT); //frontal face detection
    smooth();
    frameRate(30);
}


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


void draw() { 

    opencv.read(); // grab a new frame
    opencv.convert(GRAY); //grayscale
    opencv.contrast(contrast_value); 
    opencv.brightness(brightness_value); 
    opencv.flip(OpenCV.FLIP_HORIZONTAL);

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

    //image( opencv.image(), 0, 0 ); <- show video
    
    

    
    //draw circles
    noFill();
    stroke(fI,fI,fO,50);
    for(int i=0; i<faces.length; i++) {
      fI = faces[i].x;
      fO = faces[i].y;
      fOrvs = faces[i].y*-1;
      ellipse(faces[i].x, faces[i].y, faces[i].width, faces[i].height);

    }
    
    //distance change
    
  
  if(keyPressed && (key==CODED)) {
    if(keyCode == SHIFT) {
      background(255);
   
}
}
}

//brightness/contrast
void mouseDragged() {
    contrast_value   = (int) map(mouseX, 0, width, -128, 12);
    brightness_value = (int) map(mouseY, 0, width, -128, 128);
}

//data value x/y
void mousePressed() {
  noStroke();
  PFont f;
  f = loadFont("HelveticaNeueLT-UltraLight-20.vlw");
  textFont(f);
  fill(fO,fI,fO);
  textAlign(CENTER);
  text(fI/fO,mouseX,mouseY);
  
}