In den letzten Jahren wurde die Gesichtserkennungstechnologie in vielen Anwendungen im Bereich der Identitätsauthentifizierung eingesetzt, beispielsweise bei Abhebungen von Alipay und der China Merchants Bank, beim Einzug von Renten usw. Derzeit jedoch im Hinblick auf Fälschungsprävention und Authentifizierungssicherheit Es ist immer noch ein Thema, das weiter gelöst werden muss, insbesondere im Hinblick auf die Live-Authentifizierungstechnologie auf dem mobilen Endgerät.
In diesem Artikel wird das Erkennungstool clmtrackr.js vorgestellt, das in der HTML5-Umgebung in Kombination mit dem Gesichtsmodell verwendet werden kann, um eine Gesichtsverfolgung und -erkennung zu erreichen. Gleichzeitig wird die Bewegungserkennung genutzt, um eine Live-Authentifizierung zu erreichen.
Diese Lösung kann jedoch nur in Firefox oder Chrome verwendet werden. Und es eignet sich nur für Forschungs- und Studienzwecke. Es ist in tatsächlichen Szenarien nicht ideal und bedarf einer weiteren Optimierung, bevor es angewendet werden kann.
Wenn jemand über entsprechende Technologie verfügt, kann er mir diese empfehlen.
<!DOCTYPE html>
<!--
Ideally these elements aren't created until it's confirmed that the
client supports video/camera, but for the sake of illustrating the
elements involved, they are created with markup (not JavaScript)
-->
<html>
<meta charset="GBK">
<style>
#container {
position : relative;
}
#canvas {
position : absolute;
left : 0;
top : 0;
}
</style>
<script src="utils.js"></script>
<script src="clmtrackr.js"></script>
<script src="./models/model_pca_20_svm.js"></script>
<script src="numeric.js"></script>
<script src="ccv.js"></script>
<audio id="media">
你的浏览器不支持audio标签。
</audio>
<p id="container">
<video id="video" width="600" height="400" autoplay >
您的浏览器不支持video标签
</video>
<canvas id="canvas" width="600" height="400"></canvas>
</p>
<button id="snap">Snap Photo</button>
<button id="start">Start</button>
<button id="showposition">显示</button>
<button id="hideposition">不显示</button>
<br/>
<button id="mouse">张嘴验证</button>
<button id="head">摇头验证</button>
<button id="eye">眨眼验证</button>
<p id="tip">
</p>
<p id="result">
</p>
<p id="msg">
</p>
<p id="positions">
</p>
<script>
var showpos=false;
// Put event listeners into place
//window.addEventListener("DOMContentLoaded", function() {
// Grab elements, create settings, etc.
var canvas = document.getElementById("canvas"),
context = canvas.getContext("2d"),
video = document.getElementById("video"),
videoObj = { "video": true },
errBack = function(error) {
if (error.PERMISSION_DENIED) {
jAlert('用户拒绝了浏览器请求媒体的权限', '提示');
} else if (error.NOT_SUPPORTED_ERROR) {
jAlert('对不起，您的浏览器不支持拍照功能，请使用其他浏览器', '提示');
} else if (error.MANDATORY_UNSATISFIED_ERROR) {
jAlert('指定的媒体类型未接收到媒体流', '提示');
} else {
jAlert('系统未能获取到摄像头，请确保摄像头已正确安装。或尝试刷新页面，重试', '提示');
}
};
// Put video listeners into place
if(navigator.getUserMedia) { // Standard
navigator.getUserMedia(videoObj, function(stream) {
video.src = stream;
video.play();
}, errBack);
} else if(navigator.webkitGetUserMedia) { // WebKit-prefixed
try{
navigator.webkitGetUserMedia(videoObj, function(stream){
video.src = window.webkitURL.createObjectURL(stream);
video.play();
}, errBack);
}catch(error){
alert(error);
}
}
else if(navigator.mozGetUserMedia) { // Firefox-prefixed
navigator.mozGetUserMedia(videoObj, function(stream){
video.src = window.URL.createObjectURL(stream);
video.play();
}, errBack);
}
// Trigger photo take
document.getElementById("snap").addEventListener("click", function() {
context.drawImage(video, 0, 0, 600, 400);
});
document.getElementById("start").addEventListener("click", function() {
startTrack();
});
document.getElementById("showposition").addEventListener("click", function() {
showpos=true;
});
document.getElementById("hideposition").addEventListener("click", function() {
showpos=false;
});
document.getElementById("mouse").addEventListener("click", function() {
alive_mouse();
});
document.getElementById("head").addEventListener("click", function() {
alive_head();
});
document.getElementById("eye").addEventListener("click", function() {
alive_eye();
});
//}, false);
</script>
<script>
//////////////////////////////////////////////////////////////////////////////
//活体
var last_time=0;//时间因素
var last_nose_left=0;
var last_nose_top=0;
//张嘴动作
var is_mouse_ok=false;
var is_alive_mouse=false;
var last_dis_eye_norse=0;
var last_dis_mouse=0;
function alive_mouse(){
var media = document.getElementById("media");
media.src="mp3/alive_mouse.mp3";
media.play();
document.getElementById("tip").innerHTML="请张合嘴巴";
document.getElementById('result').innerHTML = "";
is_mouse_ok=false;
last_dis_mouse=0;
last_time=0;
last_dis_eye_norse=100000000;
is_alive_head=false;
is_alive_mouse=true;
is_alive_eye=false;
}
//摇头动作
var is_head_ok=false;
var is_alive_head=false;
var last_dis_left_right=100000000;
function alive_head(){
var media = document.getElementById("media");
media.src="mp3/alive_head.mp3";
media.play();
document.getElementById("tip").innerHTML="请在水平方向左右摇头";
document.getElementById('result').innerHTML = "";
is_head_ok=false;
last_dis_left_right=100000000;
last_time=0;
is_alive_head=true;
is_alive_mouse=false;
is_alive_eye=false;
}
//眨眼动作
var is_alive_eye=false;
var is_eye_ok = false;
function alive_eye(){
var media = document.getElementById("media");
media.src="mp3/alive_eye.mp3";
media.play();
document.getElementById("tip").innerHTML="请眨眼";
document.getElementById('result').innerHTML = "";
is_eye_ok=false;
last_dis_eye_norse=100000000;
last_nose_left=0;
last_nose_top=0;
last_time=0;
is_alive_head=false;
is_alive_mouse=false;
is_alive_eye=true;
}
function startTrack(){
var videoInput = document.getElementById('video');
var ctracker = new clm.tracker();
ctracker.init(pModel);
ctracker.start(videoInput);
var canvasInput = document.getElementById('canvas');
var cc = canvasInput.getContext('2d');
cc.lineWidth=3;
function drawLoop() {
//requestAnimationFrame(drawLoop);
cc.clearRect(0, 0, canvasInput.width, canvasInput.height);
//ctracker.draw(canvasInput );
var positions = ctracker.getCurrentPosition();
if (showpos && positions) {
for (var p = 0;p < positions.length;p++) {
positionString += "featurepoint "+p+" : ["+positions[p][0].toFixed(2)+","+positions[p][1].toFixed(2) +"]<br/>";
}
document.getElementById('positions').innerHTML = positionString;
}
if(positions){
for (var p =0;p < 71;p++) {
cc.beginPath();
cc.arc(positions[p][0].toFixed(2), positions[p][1].toFixed(2),2, 0, Math.PI * 2, true);
cc.closePath();
cc.fillStyle = '#00FF00';
cc.fill();
}
//cc.strokeStyle = 'red';
//0-14 轮廓
//7 下吧，最下
//2 最左边
//12 最右边
//15-22 眉毛
//23-27 左眼睛五个点
//27 左眼中间
//63-66 左眼四个点
//28-32 右眼睛五个点
//67-70 右眼四个点
//33-43 鼻子
//62 鼻中间
//44-61 嘴巴
//47 嘴巴上
//53 嘴巴下
///////////////////////////////////////////////////////////////////////////////////////////////
//左眼中间
for (var p =27;p <=27;p++) {
cc.beginPath();
cc.arc(positions[p][0].toFixed(2), positions[p][1].toFixed(2), 2, 0, Math.PI * 2, true);
cc.closePath();
cc.fillStyle = 'red';
cc.fill();
}
//鼻子中间
for (var p =62;p <=62;p++) {
cc.beginPath();
cc.arc(positions[p][0].toFixed(2), positions[p][1].toFixed(2), 2, 0, Math.PI * 2, true);
cc.closePath();
cc.fillStyle = 'red';
cc.fill();
}
//嘴巴上
for (var p =57;p <=57;p++) {
cc.beginPath();
cc.arc(positions[p][0].toFixed(2), positions[p][1].toFixed(2), 2, 0, Math.PI * 2, true);
cc.closePath();
cc.fillStyle = 'red';
cc.fill();
}
//嘴巴下
for (var p =60;p <=60;p++) {
cc.beginPath();
cc.arc(positions[p][0].toFixed(2), positions[p][1].toFixed(2), 2, 0, Math.PI * 2, true);
cc.closePath();
cc.fillStyle = 'red';
cc.fill();
}
//////////////////////////////////////
//head
if(is_alive_head==true){
if(last_time==0 || (new Date().getTime()-last_time>500 && new Date().getTime()-last_time<10000 ) ){
var xdiff_left = positions[62][0] - positions[2][0] ;
var ydiff_left = positions[62][1] - positions[2][1] ;
var dis_left = Math.pow((xdiff_left * xdiff_left + ydiff_left * ydiff_left), 0.5);
var xdiff_right = positions[12][0] - positions[62][0] ;
var ydiff_right = positions[12][1] - positions[62][1] ;
var dis_right = Math.pow((xdiff_right * xdiff_right + ydiff_right * ydiff_right), 0.5);
var xdiff_side = positions[12][0] - positions[2][0] ;
var ydiff_side = positions[12][1] - positions[2][1] ;
var dis_side = Math.pow((xdiff_side * xdiff_side + ydiff_side * ydiff_side), 0.5);
var dis_left_right = dis_left - dis_right;
document.getElementById('result').innerHTML = dis_left_right;
if(last_dis_left_right>0 && dis_left_right > dis_side/3){
document.getElementById('result').innerHTML = "通过";
is_head_ok=true;
is_alive_head=false;
}
last_dis_left_right=dis_left_right;
last_time = new Date().getTime();
}
}
/////////////////////////////////////
//mouse
if(is_alive_mouse==true){
if(last_time==0 || (new Date().getTime()-last_time>500 && new Date().getTime()-last_time<10000 ) ){
//研究和鼻子距离
var xdiff = positions[62][0] - positions[27][0] ;
var ydiff = positions[62][1] - positions[27][1] ;
var dis_eye_norse = Math.pow((xdiff * xdiff + ydiff * ydiff), 0.5);
//上嘴唇 和下嘴唇距离
var xdiff_mouse = positions[53][0] - positions[47][0] ;
var ydiff_mouse = positions[53][1] - positions[47][1] ;
var dis_mouse = Math.pow((xdiff_mouse * xdiff_mouse + ydiff_mouse * ydiff_mouse), 0.5);
//上次的眼鼻距离和这次的眼鼻距离差
var dn= Math.abs(dis_eye_norse-last_dis_eye_norse);
//上次的嘴距离和本次的嘴距离差
var dm=Math.abs(dis_mouse - last_dis_mouse);
//鼻子的位置确保变化不大
if(last_nose_left>0 && last_nose_top>0
&& Math.abs(positions[62][0]-last_nose_left)<5
&& Math.abs(positions[62][1]-last_nose_top)<5
){
document.getElementById('msg').innerHTML = dn;
if(last_dis_eye_norse>0 && dn < dis_eye_norse*1/50){
if(last_dis_mouse>0 && dm > dis_mouse/10){
document.getElementById('result').innerHTML = "通过";
is_alive_mouse=false;
is_mouse_ok=true;
}
}
}
last_dis_mouse = dis_mouse;
last_dis_eye_norse = dis_eye_norse;
last_time = new Date().getTime();
last_nose_left = positions[62][0];
last_nose_top = positions[62][1];
}
}
/////////////////////////////////////
//eye
if(is_alive_eye==true){
if(last_time==0 || (new Date().getTime()-last_time>10 ) ){
var xdiff1 = positions[62][0] - positions[27][0] ;
var ydiff1 = positions[62][1] - positions[27][1] ;
var dis_eye_norse1 = Math.pow((xdiff1 * xdiff1 + ydiff1 * ydiff1), 0.5);
var xdiff2 = positions[62][0] - positions[32][0] ;
var ydiff2 = positions[62][1] - positions[32][1] ;
var dis_eye_norse2 = Math.pow((xdiff2 * xdiff2 + ydiff2 * ydiff2), 0.5);
var dis_eye_norse = (dis_eye_norse1 + dis_eye_norse2);
if(last_nose_left>0 && last_nose_top>0
&& Math.abs(positions[62][0]-last_nose_left)<0.5
&& Math.abs(positions[62][1]-last_nose_top)<0.5
){
document.getElementById('msg').innerHTML = Math.abs(dis_eye_norse - last_dis_eye_norse) - dis_eye_norse*1/20;
if(last_dis_eye_norse>0 && (Math.abs(dis_eye_norse - last_dis_eye_norse) > dis_eye_norse*1/20 ) ){
document.getElementById('result').innerHTML = "通过";
is_alive_eye=false;
is_eye_ok=true;
}
}
last_nose_left = positions[62][0];
last_nose_top = positions[62][1];
last_dis_eye_norse = dis_eye_norse;
last_time = new Date().getTime();
}
}
}
requestAnimationFrame(drawLoop);
}
drawLoop();
}
</script>
</html> Das Obige ist der Inhalt der Implementierungsmethode der Gesichtserkennungs-Live-Authentifizierung basierend auf HTML5. Für weitere verwandte Inhalte achten Sie bitte auf PHP Chinesische Website (www.php.cn)!
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