<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>基于tracking的取人脸</title>
<script src="static/js/util/jquery.min.js"></script>
<script src="static/js/util/tracking-min.js"></script>
<script src="static/js/util/face-min.js"></script>
<style>
* {
padding: 0;
margin: 0;
}
video, #canvas{
position: absolute;
width: 581px;
height: 436px;
}
.container {
position: relative;
width: 581px;
height: 436px;
}
</style>
</head>
<body>
<div class="container">
<video id="video" autoplay loop muted playsinline webkit-playsinline="true"></video>
<canvas id="canvas" width="581" height="436"></canvas>
</div>
<script>
window.onload = function () {
var video = document.getElementById('video');
var canvas = document.getElementById('canvas');
var context = canvas.getContext('2d');
var tracker = new tracking.ObjectTracker('face');
tracker.setInitialScale(4);
tracker.setStepSize(2);
tracker.setEdgesDensity(0.1);
tracking.track('#video', tracker, {camera: true});
tracker.on('track', function (event) {
context.clearRect(0, 0, canvas.width, canvas.height);
event.data.forEach(function (rect) {
context.strokeStyle = '#fff';
context.strokeRect(rect.x, rect.y, rect.width, rect.height);
context.fillStyle = "#fff";
});
});
};
</script>
</body>
</html>
Tips:
需要环境：
1、可能需要 HTTPS
2、iPhone 可能需要IOS10以上、使用Safari浏览器才可调用
标签：canvas,tracking,Demo,js,tracker,context,height,rect From： https://www.cnblogs.com/lucky-jun/p/16588194.html