[PHP知识库]php+laravel+百度智能云人脸识别详解

前提条件： 首先，要有一个百度云账号并获取到自己的App_Id、API_KEY、Secret_Key和创建好的人脸库名

1. 下载SDK

composer require baidu/aip-sdk

2. 直接上代码? 挂件地方已注释

<?php

namespace App\Http\Controllers\Face;

use App\Http\Controllers\Controller;
use Dcat\Admin\Grid\Filter\Group;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;

class FaceController extends Controller
{
    const APP_ID = '';             //百度智能云获取
    const API_KEY = '';     //百度智能云获取
    const SECRET_KEY = '';    //百度智能云获取
    const IMAGE_Type = 'BASE64';  // 设置图片类型 必须大写
    const OPSTION = ['max_face_num'=>5,'face_field'=>'age,beauty,gender,expression'];   // 最大人脸数及返回 可选参数
    const GROUP = '';   // 组名
    private $client;

    public function __construct()
    {
        //实例化对象
       $this->client = new \AipFace(self::APP_ID, self::API_KEY, self::SECRET_KEY);
    }

    /**
     * 人脸识别
     * @param $image string 人脸图片
     * @param $type int 方式
     * */
    public function face(request $request){
        $image = $request['image'];
        $type = $request['type'];
        $img = $this->image($image,$type);
        $result = $this->client->detect($img,self::IMAGE_Type,self::OPSTION);
        return $result;
    }

    /**
     * 人脸搜索
     * @param $image string 人脸图片
     * @param $type int 方式
     * */
    public function faceSearch(request $request){
        $image = $request['image'];
        $type = $request['type'];
        $img = $this->image($image,$type);
        $result = $this->client->search($img,self::IMAGE_Type,self::GROUP);
        return $result;
    }

    /**
     * 人脸注册
     * @param $image string 人脸图片
     * @param $userId int  用户Id
     * */
    public function faceRegister(request $request){
        $image = $request['image'];
        $type = $request['type'];
        $userId = $request['userId'];
        if(empty($userId)) return showMsg(400,'参数不全');
        $img = $this->image($image,$type);
        $result = $this->client->addUser($img,self::IMAGE_Type,self::GROUP,$userId,self::OPSTION);
        return $result;
    }

    /**
     * 人脸删除
     * @param $faceToken string 删除的人脸图片token    注册成功时返回
     * @param $userId  int 用户ID
     * */
    public function faceDel(request $request){
        $faceToken = $request['faceToken'];
        $userId = $request['userId'];
        if(empty($faceToken) || empty($userId))  return showMsg(400,'参数不全');
        $result = $this->client->faceDelete($userId,self::GROUP,$faceToken);
        return $result;
    }

    /**
     * 人脸更新
     * @param $image string 人脸图片
     * @param $userId int 用户ID
     * */
    public function faceUpd(request $request){
        $userId = $request['userId'];
        $image = $request['image'];
        $type = $request['type'];
        if(empty($userId))  return showMsg(400,'参数不全');
        $img = $this->image($image,$type);
        $result = $this->client->updateUser($img,self::IMAGE_Type,self::GROUP,$userId);
        return $result;
    }

    /**
     * @param $image  string 人脸图
     * @param $type  int   类型   5为文件上传图  7为现拍图
     * */
    public function image($image,$type){
        if(empty($image) || empty($type)) return showMsg(400,'参数不全');
        $result = '参数不对';
        if($type == 5){
           $result = base64_encode(file_get_contents($image));
        }
        if($type == 7){
            $result = str_replace('data:image/png;base64,', '', $image);
        }
        return $result;
    }

    /**
     * 将图片保存到本地
     * 系统现拍 转码  base64编码字符串转换成图片
     * @param $image string base64串
     * */
    public function baseDecode($image){
        $imageName = "25220_".date("His",time())."_".rand(1111,9999).'.png';
        if (strstr($image,",")){
            $image = explode(',',$image);
            $image = $image[1];
        }
        $path = "./".date("Ymd",time());
        if (!is_dir($path)){ //判断目录是否存在 不存在就创建
            mkdir($path,0777,true);
        }
        $imageSrc= $path."/". $imageName; //图片名字
        $r = file_put_contents($imageSrc, base64_decode($image));//返回的是字节数
        if (!$r) {
            return showMsg(400,'图片生成失败');
        }else{
            $url = 'http://hyzf.cn/'.$imageSrc;
            return $url;
        }
    }
}

另附：调用本地摄像头现拍代码（注：只有HTTPS域名和127.0.0.1 才可调用本地摄像头）

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>H5 canvas 调用摄像头进行绘制</title>
	<style>
		html,body{
			width:100%;
			height:100%;
			padding: 0px;
			margin: 0px;
			overflow: auto;
		}
		#canvas{
			width:500px;
			height:300px;
		}
		#video{
			width:500px;
			height:300px;
		}
		.btn{
			display:inline-block;
			text-align: center;
			background-color: #333;
			color:#eee;
			font-size:14px;
			padding:5px 15px;
			border-radius: 5px;
			cursor:pointer;
		}
	</style>
</head>
<body>
	<p style="text-align:center;font-size:12px;color:#555;">本DEMO不会存储任何有关视频图像信息，可以查看源码，都是在本地操作，没有任何服务器上传代码。</p>
	<video id="video" autoplay="true" style="background-color:#ccc;display:none;"></video>
	<div style="width:500px;height:300px;margin:30px auto;">
		<canvas id="canvas" width="500px" height="300px">您的浏览器不支持H5 ,请更换或升级!</canvas>
		<span class="btn" filter="screenshot">视频截图</span>
		<span class="btn" filter="close">暂停本地摄像头</span>
		<span class="btn" filter="open">打开本地摄像头</span>
	</div>
	<div style="width:500px;height:300px;margin:40px auto;" id="show"></div>
</body>
</html>
<script>
	navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
	var events = {
		open : function(){
			LV.open();
		},
		close : function(){
			console.log(LV.timer);
			clearInterval(LV.timer);
		},
		screenshot : function(){
			//获得当前帧的图像并拿到数据
			var image = canvas.toDataURL('jpeg');
			document.getElementById('show').innerHTML = '<img src="'+image+'" style="width:500px;height:300px;" />'
		}
	};
	var LV = {
		video : document.getElementById('video'),
		canvas : document.getElementById('canvas'),
		timer : null,
		media : null,
		open :function(){
			if(!LV.timer){
				navigator.getUserMedia({
					video : {width:500,height:300}
				},function(stream){
					LV.video.srcObject = stream;
			        LV.video.onloadedmetadata = function(e) {
			        	LV.video.play();
			        };
				},function(err){
					alert(err);//弹窗报错
				})
			}
			if(LV.timer){
				clearInterval(LV.timer);
			}
			//将画面绘制到canvas中
			LV.timer = setInterval(function(){
				LV.ctx.drawImage(LV.video,0,0,500,300);
			},15);
		},
		init : function(){
			LV.ctx = LV.canvas.getContext('2d');
			//绑定事件
			document.querySelectorAll('[filter]').forEach(function(item){
				item.onclick = function(ev){
					var type = this.getAttribute('filter');
					events[type].call(this,ev);
				}
			});
			return LV;
		}
	};
	LV.init();
</script>

3. 官方文档链接

人脸识别_人脸检测_人脸对比_人脸搜索_活体检测_百度智能云