opencv/examples/face-detection.js

Node Bindings to OpenCV

var cv = require('../lib/opencv');

cv.readImage("./files/mona.png", function(err, im){
  if (err) throw err;
  if (im.width() < 1 || im.height() < 1) throw new Error('Image has no size');

  im.detectObject("../data/haarcascade_frontalface_alt.xml", {}, function(err, faces){
    if (err) throw err;

    for (var i = 0; i < faces.length; i++){
      var face = faces[i];
      im.ellipse(face.x + face.width / 2, face.y + face.height / 2, face.width / 2, face.height / 2);
    }

    im.save('./tmp/face-detection.png');
    console.log('Image saved to ./tmp/face-detection.png');
  });
});