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detectFace.html
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detectFace.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>人脸检测</title>
<script type="text/javascript" src="facepp_sdk/jquery.min.js"></script>
<script type="text/javascript" src="facepp_sdk/exif.js"></script>
<script type="text/javascript" src="facepp_sdk/facepp_sdk.js"></script>
<meta name="viewport" content="width=device-width,initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<script type="text/javascript" src="common.js"></script>
<link rel="stylesheet" type="text/css" href="common.css">
</head>
<style>
#input{
opacity: 0;
}
#facesContainer{
position: absolute;
top: 84px;
width: 320px;
height: 320px;
line-height: 320px;
left: 0;
right: 0;
background-color: darkgray;
text-align: center;
margin: 0 auto;
}
#preview{
vertical-align: middle;
max-width: 100%;
max-height: 100%;
}
#text{
left: 5%;
position: absolute;
top: 414px;
width: 90%;
bottom: 10px;
}
</style>
<body>
<div class="container">
<div class="button" onclick=clickInput()>选择照片</div>
<input id="input" type="file" accept="image/*" name="xaunz" onchange="selectImage(this)"/>
<div id="facesContainer">
<img id="preview" />
</div>
<textarea id="text" readonly="readonly"></textarea>
</div>
</body>
</html>
<script>
resetContainer();
//点击选择图片
function clickInput(){
document.getElementById('input').click();
}
</script>
<script>
var facepp = new FACEPP(APIKEY,APISERET,1);
/*
// 以图片URL的方式上传图片
let dic = {'image_url' : 'https://www.faceplusplus.com.cn/scripts/demoScript/images/demo-pic6.jpg'};
facepp.detectFace(dic,success,failed);
*/
// 选择照片
function selectImage(input){
let imageView = document.getElementById('preview');
const reader = new FileReader();
reader.readAsDataURL(input.files[0]);
reader.onload = function (e) {
//移除之前的人脸框
$("#facesContainer div").remove();
//图片的base64数据
const base64Image = e.target.result;
//显示图片
//修复显示方向不对问题
fixOrientention(base64Image,imageView);
/*
//base64方式上传图片
let dic = {'image_base64' : base64Image};
facepp.detectFace(dic,success,failed);
*/
// 以二进制的方式上传图片
// 将base64转为二进制
let imageData = facepp.dataURItoBlob(base64Image);
//根据个人需求填写的参数,这里全部写上了,包括年龄性别等,详情看官方文档
let attributes = 'gender,age,smiling,headpose,facequality,blur,eyestatus,emotion,ethnicity,beauty,mouthstatus,eyegaze,skinstatus';
//上传图片,获取结果
let dataDic = {'image_file':imageData,'return_landmark':2,'return_attributes':attributes};
//调用接口，检测人脸
facepp.detectFace(dataDic,success,failed);
}
}
//成功的回调
function success(e){
//显示结果
console.log(e);
let textView = document.getElementById('text');
textView.innerText = JSON.stringify(e,null,"\t");
// 画上人脸框,男女颜色不一样
let imageView = document.getElementById('preview');
const faces = e.faces;
for (const index in faces){
const face = faces[index];
const face_rectangle = face.face_rectangle;
//脸部旋转角度
var roll = face.attributes.headpose.roll_angle;
//性别
var gender = face.attributes.gender.value;
const borderColor = (gender == 'Male') ? 'blue' : 'red';
console.log('人脸框颜色：' + borderColor);
//脸部坐标
var faceX = face_rectangle.left;
var faceY = face_rectangle.top;
var faceW = face_rectangle.width;
var faceH = face_rectangle.height;
//faceContainer尺寸
var width = 320;
var height = 320;
//img尺寸
var imageW = imageView.width;
var imageH = imageView.height;
//图片实际尺寸
var naturalWidth = imageView.naturalWidth;
var naturalHeight = imageView.naturalHeight;
console.log('container尺寸' + width + '----' + height);
console.log('img尺寸' + imageW + '----' + imageH);
console.log('图片实际尺寸' + naturalWidth + '----' + imageH);
const scale = imageW / naturalWidth;
console.log('scale > ' + scale);
const offsetX = (width - imageW)*0.5;
const offsetY = (height - imageH)*0.5;
console.log('offsetX：' + offsetX + 'offsetY' + offsetY);
//添加人脸框
$('<div/>').css({
position: 'absolute',
top: faceY * scale + offsetY,
left: faceX * scale + offsetX,
height: faceH * scale,
width: faceW * scale,
border: '2px solid ' + borderColor,
transform: 'rotate(' + roll + 'deg)'
}).appendTo($("#facesContainer"));
}
}
//失败的回调
function failed(e){
console.log(e);
let textView = document.getElementById('text');
textView.innerText = JSON.stringify(e);
}
//图片方向矫正
function fixOrientention(base64Image,imageView) {
const image = new Image();
image.onload = () => {
const canvas = document.createElement('canvas');
const initSize = image.src.length;
let width = image.naturalWidth;
let height = image.naturalHeight;
const ctx = canvas.getContext('2d');
ctx.clearRect(0, 0, canvas.width, canvas.height);
// 旋转图片操作
EXIF.getData(image, function () {
const orientation = EXIF.getTag(this, 'Orientation');
console.log(`orientation:${orientation}`);
switch (orientation) {
// 正常状态
case 1:
console.log('旋转0°');
canvas.height = height;
canvas.width = width;
ctx.drawImage(image, 0, 0, width, height);
break;
// 旋转90度
case 6:
console.log('旋转90°');
canvas.height = width;
canvas.width = height;
ctx.rotate(Math.PI / 2);
ctx.translate(0, -height);
ctx.drawImage(image, 0, 0, width, height);
break;
// 旋转180°
case 3:
console.log('旋转180°');
canvas.height = height;
canvas.width = width;
ctx.rotate(Math.PI);
ctx.translate(-width, -height);
ctx.drawImage(image, 0, 0, width, height);
break;
// 旋转270°
case 8:
console.log('旋转270°');
canvas.height = width;
canvas.width = height;
ctx.rotate(-Math.PI / 2);
ctx.translate(-width, 0);
ctx.drawImage(image, 0, 0, width, height);
break;
default:
console.log('default 旋转0°');
canvas.height = height;
canvas.width = width;
ctx.drawImage(image, 0, 0, width, height);
break;
}
});
var newBase64 = canvas.toDataURL('image/jpeg', 1.0);
imageView.src = newBase64;
};
image.src = base64Image;
}
</script>