【本文出自APICloud官方论坛，感谢鲍永道的分享。】首先介绍下百度人脸识别模块（baiduFaceRec）：baiduFaceRec模块封装了百度AI人脸识别功能，使用此模块可实现百度人脸检测（包括age,beauty,expression,faceshape,gender,glasses,landmark,race,quality,facetype信息）、人脸对比功能（比对两张图片中人脸的相似度，并返回相似度分值）。暂仅支持 android 平台。不啰嗦，直接上代码：<!DOCTYPE html><html xmlns=“http://www.w3.org/1999/html"><head><meta http-equiv=“Content-Type” content=“text/html; charset=utf-8”/><meta name=“viewport” content=“maximum-scale=1.0,minimum-scale=1.0,user-scalable=0,width=device-width,initial-scale=1.0”/><title>frame2</title><link rel=“stylesheet” href=”../css/api.css"><link rel=“stylesheet” href="../css/aui.css"><style> html, body { background: #ffffff; } .my-card { border: solid 1px #dddddd; margin: 10px; } .aui-btn-block { margin-bottom: 10px; }</style></head><body><section class=“aui-content-padded my-card”><div class=“aui-card-list”> <div class=“aui-card-list-header”> 百度人脸识别（V3版本）自定义模块 </div> <div class=“aui-card-list-content-padded”> 人脸识别 </div> <div class=“aui-card-list-footer”> 2018-06-03 </div></div></section><div class=“aui-content-padded”><p><div class=“aui-btn aui-btn-info aui-btn-block”>获取access_token</div></p><p><div class=“aui-btn aui-btn-info aui-btn-block”>人脸检测</div></p><p><div class=“aui-btn aui-btn-info aui-btn-block”>人脸对比</div></p></div></body></html><script src="../script/api.js"></script><script>var baiduFaceRec = null;var UIAlbumBrowser = null;apiready = function () { baiduFaceRec = api.require(‘baiduFaceRec’); UIAlbumBrowser = api.require(‘UIAlbumBrowser’);};//获取access_tokenfunction getAuth() { var params = { ak: ‘your ak’, sk: ‘your sk’ };baiduFaceRec.getAuth(params, function (ret, err) {if (ret) { console.log(JSON.stringify(ret)); alert(‘access_token=’ + ret.access_token);} else { console.log(err.msg); alert(‘错误信息：’ + err.msg);}})}//人脸检测function detect() { //先获取access_token var params = { ak: ‘your ak’, sk: ‘your sk’ }; baiduFaceRec.getAuth(params, function (ret, err) { if (ret) { console.log(JSON.stringify(ret)); var access_token = ret.access_token; //选择照片或拍照 api.actionSheet({ title: ‘选择照片’, cancelTitle: ‘取消’, buttons: [‘拍照’, ‘手机相册’] }, function (ret, err) { if (ret) { console.log(ret.buttonIndex); if (ret.buttonIndex != 3) { var sourceType = ret.buttonIndex; //获取图片 api.getPicture({ sourceType: (sourceType == 1) ? ‘camera’ : ‘album’, encodingType: ‘jpg’, mediaValue: ‘pic’, destinationType: ‘url’, allowEdit: true, saveToPhotoAlbum: false }, function (ret, err) { if (ret) { console.log(ret.data); var filePath = ret.data; var params = { filePath: filePath, access_token: access_token }; //人脸检测 baiduFaceRec.detect(params, function (ret, err) { if (ret) { console.log(JSON.stringify(ret)); alert(‘人脸检测数据’ + JSON.stringify(ret.result.face_list)); } else { console.log(err.msg); } }) } else { console.log(JSON.stringify(err)); alert(JSON.stringify(err)); } }) } else { return false; } } }); } else { console.log(err.msg); alert(‘错误：’ + ret.msg); } });}//人脸对比function match() { //先获取access_token var params = { ak: ‘your ak’, sk: ‘your sk’ }; baiduFaceRec.getAuth(params, function (ret, err) { if (ret) { console.log(JSON.stringify(ret)); var access_token = ret.access_token; //得到对比图片 UIAlbumBrowser.open({ max: 2, styles: { bg: ‘#fff’, mark: { icon: ‘’, position: ‘bottom_left’, size: 20 }, nav: { bg: ‘rgba(0,0,0,0.6)’, titleColor: ‘#fff’, titleSize: 18, cancelColor: ‘#fff’, cancelSize: 16, finishColor: ‘#fff’, finishSize: 16 } }, rotation: true }, function (ret) { if (ret) { var filePath1 = ret.list[0].path; var filePath2 = ret.list[1].path; var params = { filePath1: filePath1, filePath2: filePath2, access_token: access_token }; //人脸对比 baiduFaceRec.match(params, function (ret, err) { if (ret) { console.log(JSON.stringify(ret)); alert(‘人脸检测数据’ + JSON.stringify(ret)); } else { console.log(err.msg); } }) } }); } else { console.log(err.msg); alert(‘错误：’ + ret.msg); } });}</script>使用模块前需要先到百度AI开发者中心创建应用，获取ak和sk，然后进行身份验证,获取返回的access_token，建议每次进行人脸识别接口时先获取access_token（30期限），然后每次请求识别接口也传入access_token，这样保证每次都请求ok。另外的两个人脸识别接口，一个是人脸识别，一个是人脸对比。人脸识别主要是识别人的脸部相关参数，对应的参数很多，我就不一一说明了，文档有详细说明。另外就是人脸对比，对比两张脸的相似度值，可以根据相似度值来判断两张人脸是否是同一个人，在项目上应用于人脸对比验证，应该会使用的比较多。