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<!doctype html>
<html lang="en">
<head>
<title>facetracking</title>
<meta http-equiv="X-UA-Compatible" content="IE=Edge"/>
<meta charset="utf-8">
<style>
body {
background-color: #f0f0f0;
margin-left: 10%;
margin-right: 10%;
margin-top: 5%;
width: 40%;
overflow: hidden;
font-family: "Helvetica", Arial, Serif;
position: relative;
}
#imagebox { position: absolute; top:120px;
left: 200px;}
img {width: 640px; height: 480px; display: none; }
img.img15 {display: block;}
</style>
</head>
<body>
<script src="headtrackr.js"></script>
<canvas id="compare" width="320" height="240" style="display:none"></canvas>
<video id="vid" autoplay loop width="320" height="240" style="display:block"></video>
<canvas id="overlay" width="320" height="240" style="display:none"></canvas>
<canvas id="debug" width="320" height="240" style="display:none"></canvas>
<!--
<p id='gUMMessage'></p>
<p>Status : <span id='headtrackerMessage'></span></p>
<p><input type="button" onclick="htracker.stop();htracker.start();" value="reinitiate facedetection"></input>
<br/><br/>
<input type="checkbox" onclick="showProbabilityCanvas()" value="asdfasd"></input>Show probability-map</p>
-->
<div id="imagebox">
<img class="img1" src='imgtest/2-.JPG' />
<img class="img2" src='imgtest/3-.JPG' />
<img class="img3" src='imgtest/4-.JPG' />
<img class="img4" src='imgtest/5-.JPG' />
<img class="img5" src='imgtest/6-.JPG' />
<img class="img6" src='imgtest/7-.JPG' />
<img class="img7" src='imgtest/8-.JPG' />
<img class="img8" src='imgtest/9-.JPG' />
<img class="img9" src='imgtest/10-.JPG' />
<img class="img10" src='imgtest/11-.JPG' />
<img class="img11" src='imgtest/12-.JPG' />
<img class="img12" src='imgtest/13-.JPG' />
<img class="img13" src='imgtest/14-.JPG' />
<img class="img14" src='imgtest/15-.JPG' />
<img class="img15" src='imgtest/16-.JPG' />
<img class="img16" src='imgtest/17-.JPG' />
<img class="img17" src='imgtest/18-.JPG' />
<img class="img18" src='imgtest/19-.JPG' />
<img class="img19" src='imgtest/20-.JPG' />
<img class="img20" src='imgtest/21-.JPG' />
<img class="img21" src='imgtest/22-.JPG' />
<img class="img22" src='imgtest/23-.JPG' />
<img class="img23" src='imgtest/24-.JPG' />
<img class="img24" src='imgtest/25-.JPG' />
<img class="img25" src='imgtest/26-.JPG' />
<img class="img26" src='imgtest/27-.JPG' />
<img class="img27" src='imgtest/28-.JPG' />
<img class="img28" src='imgtest/29-.JPG' />
<img class="img29" src='imgtest/30-.JPG' />
<img class="img30" src='imgtest/31-.JPG' />
</div>
<p>Status : <span id='headtrackerMessage'></span></p>
<p id='gUMMessage'></p>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js" type="text/javascript" charset="utf-8"></script>
<script>
// set up video and canvas elements needed
var videoInput = document.getElementById('vid');
var canvasInput = document.getElementById('compare');
var canvasOverlay = document.getElementById('overlay')
var debugOverlay = document.getElementById('debug');
var overlayContext = canvasOverlay.getContext('2d');
canvasOverlay.style.position = "absolute";
canvasOverlay.style.top = '0px';
canvasOverlay.style.zIndex = '100001';
canvasOverlay.style.display = 'block';
debugOverlay.style.position = "absolute";
debugOverlay.style.top = '0px';
debugOverlay.style.zIndex = '100002';
debugOverlay.style.display = 'none';
// add some custom messaging
statusMessages = {
"whitebalance" : "checking for stability of camera whitebalance",
"detecting" : "Detecting face",
"hints" : "Hmm. Detecting the face is taking a long time",
"redetecting" : "Lost track of face, redetecting",
"lost" : "Lost track of face",
"found" : "Tracking face"
};
supportMessages = {
"no getUserMedia" : "Unfortunately, <a href='http://dev.w3.org/2011/webrtc/editor/getusermedia.html'>getUserMedia</a> is not supported in your browser. Try <a href='http://www.opera.com/browser/'>downloading Opera 12</a> or <a href='http://caniuse.com/stream'>another browser that supports getUserMedia</a>. Now using fallback video for facedetection.",
"no camera" : "No camera found. Using fallback video for facedetection."
};
document.addEventListener("headtrackrStatus", function(event) {
if (event.status in supportMessages) {
var messagep = document.getElementById('gUMMessage');
messagep.innerHTML = supportMessages[event.status];
} else if (event.status in statusMessages) {
var messagep = document.getElementById('headtrackerMessage');
messagep.innerHTML = statusMessages[event.status];
}
}, true);
// the face tracking setup
var htracker = new headtrackr.Tracker({altVideo : {ogv : "./media/capture5.ogv", mp4 : "./media/capture5.mp4"}, calcAngles : true, ui : false, headPosition : false, debug : debugOverlay});
htracker.init(videoInput, canvasInput);
htracker.start();
// for each facetracking event received draw rectangle around tracked face on canvas
var picChangeNo = 30;
var picTrichNo = picChangeNo/2;
document.addEventListener("facetrackingEvent", function( event ) {
// clear canvas
overlayContext.clearRect(0,0,320,240);
// once we have stable tracking, draw rectangle
if (event.detection == "CS") {
overlayContext.translate(event.x, event.y)
overlayContext.rotate(event.angle-(Math.PI/2));
overlayContext.strokeStyle = "#00CC00";
overlayContext.strokeRect((-(event.width/2)) >> 0, (-(event.height/2)) >> 0, event.width, event.height);
overlayContext.rotate((Math.PI/2)-event.angle);
overlayContext.translate(-event.x, -event.y);
var messagep = document.getElementById('gUMMessage');
var imgBox = document.getElementById('imagebox');
var imgName = '.img' + (Math.floor((event.x/320)*picChangeNo));
messagep.innerHTML = "evnet.x=" + event.x +", Percentage = " + (event.x/320) + "% ,\n <br/>We can show pic No." + Math.floor((event.x/320)*picChangeNo) + "<br/> imgName=" +imgName;
//imgBox.innerHTML = "<img src='imgtest/" + (Math.floor((event.x/320)*picChangeNo)) + "-.JPG' />"
var newPicTrichNo = Math.floor((event.x/320)*picChangeNo);
if ( newPicTrichNo!== picTrichNo) {
$('#imagebox img').hide();
$(imgName).show();
}
}
});
// turn off or on the canvas showing probability
function showProbabilityCanvas() {
var debugCanvas = document.getElementById('debug');
if (debugCanvas.style.display == 'none') {
debugCanvas.style.display = 'block';
} else {
debugCanvas.style.display = 'none';
}
}
</script>
</body>
</html>