PHP实现人脸识别技术

这次人脸识别技术，是实现在微信端的，也就是说利用公众微信平台，调用第三的API来实现人脸识别这项技术的。

实现的思路：

首先呢，将收集的照片，建立一个照片库，然后利用在微信平台发送的照片，去到照片库进行匹配，那么怎么匹配呢？

这就要利用第三方的API了。

这个是收集信息，然后存储到信息库(包括图谱库)

部分代码：

<html>
    <head>
        <meta charset="utf-8"/>
        <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=0">
        <title>上传到人脸信息库</title>
        <link rel="stylesheet" href="./weui/dist/style/weui.min.css"/>
        <style>
         #preview, .img, img  
         {  
             width:79px;  
             height:79px;  
         }  
        </style>
    </head>
    <body>
        <div class="hd" style="text-align:center;">
            <h1 class="weui_cell_primary">上传到人脸信息库</h1>
        </div>
        <form action="up.php" method="post" enctype="multipart/form-data">
            <div class="weui_cell">
                <div class="weui_cell_hd"><label class="weui_label">姓名</label></div>
                <div class="weui_cell_bd weui_cell_primary">
                    <input class="weui_input" type="text" name="username" placeholder="请输入联系人姓名"/>
                </div>
            </div>
            <div class="weui_cell">
                <div class="weui_cell_hd"><label class="weui_label">电话</label></div>
                <div class="weui_cell_bd weui_cell_primary">
                    <input class="weui_input" type="text" name="number" pattern="[0-9]*" placeholder="请输入联系人电话号码"/>
                </div>
            </div>
            <div class="weui_cell">
                <div class="weui_cell_hd"><label class="weui_label">微信</label></div>
                <div class="weui_cell_bd weui_cell_primary">
                    <input class="weui_input" type="text" name="weixin" placeholder="请输入联系人微信号"/>
                </div>
            </div>
            <div class="weui_cell">
                <div class="weui_cell_bd weui_cell_primary">
                    <div class="weui_uploader">
                        <div class="weui_uploader_hd weui_cell">
                            <div class="weui_cell_bd weui_cell_primary">图片上传</div>
                        </div>
                        <div class="weui_uploader_bd">
                             <ul class="weui_uploader_files">
                                <li class="weui_uploader_file" id="preview"></li>
                            </ul>
                            <div class="weui_uploader_input_wrp">
                                <input class="weui_uploader_input" type="file" name="pic" onchange="preview(this)" />
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            <input type="submit" value="提交" class="weui_btn weui_btn_primary" style="width:40%;"/>
        </form>
    </body>
<script type="text/javascript">    
 function preview(file){  
    var prevDiv = document.getElementById('preview');  
    if(file.files && file.files[0]){  
        var reader = new FileReader();  
        reader.onload = function(evt){
        prevDiv.innerHTML = '<img src="' + evt.target.result + '" />';  
    }    
         reader.readAsDataURL(file.files[0]);  
    }else{  
        prevDiv.innerHTML = '<div class="img" style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src=\'' + file.value + '\'"></div>';  
    }  
 }  
</script> 
</html>

分析照片

<?php
    if(isset($_FILES['pic'])&&$_FILES['pic']['error'] == 0){
        $name = mt_rand(100000,999999);
        $ext = explode(".",$_FILES['pic']['name']);
        $ext = end($ext);
        $full = $name.".".$ext;
        $rs = move_uploaded_file($_FILES['pic']['tmp_name'], './upload/'.$full);
        if(!$rs){
            exit('上传图片出错');
        }
 
        //上传成功后,获取图片地址
        $pic = 'http://yxhwxtest.applinzi.com/wx/upload/'.$full;
        //$pic = 'http://yxhwxtest.applinzi.com/wx/upload/718204.jpg';
 
        //人脸检测与分析
        $api =  'http://apicn.faceplusplus.com/v2/detection/detect?api_key=3f2fd9843ac889c84f43de513bca05f2&api_secret=sDUH2FP2b3L4tSKQNHCCk17sUYsHW8HU&url='.$pic.'&attribute=glass,pose,gender,age,race,smiling';
 
        //将json转换为数组
        $rs = json_decode(file_get_contents($api),true);
 
        if(count($rs['face']) == 0){
            exit('没有检测出人脸');
        }
 
        $face_id = $rs['face'][0]['face_id'];
 
        //创建脸集
        //$api='https://apicn.faceplusplus.com/v2/faceset/create?api_key=3f2fd9843ac889c84f43de513bca05f2&api_secret=sDUH2FP2b3L4tSKQNHCCk17sUYsHW8HU&faceset_name=renlianshibie&face_id='.$face_id;
 
 
 
        //将人脸加入到脸集中
        $api = 'https://apicn.faceplusplus.com/v2/faceset/add_face?api_secret=sDUH2FP2b3L4tSKQNHCCk17sUYsHW8HU&face_id='.$face_id.'&api_key=3f2fd9843ac889c84f43de513bca05f2&faceset_name=renlianshibie';
 
        $rs = json_decode(file_get_contents($api),true);
 
         
 
        if($rs['success'] == 0){
            exit('加入脸集失败');
        }else{
            //训练脸集
            $api = 'https://apicn.faceplusplus.com/v2/train/search?api_key=3f2fd9843ac889c84f43de513bca05f2&api_secret=sDUH2FP2b3L4tSKQNHCCk17sUYsHW8HU&faceset_name=renlianshibie';
            $rs = file_get_contents($api);
            //p($rs);
            exit('加入脸集成功');
        }
    }
    //调试输出函数
    function p($var){
        if(is_bool($var)){
            var_dump($var);
        }else if(is_null($var)){
            var_dump(NULL);
        }else{
            echo "<pre style='position:relative;z-index:1000;padding:10px;border-radius:5px;background:#F5F5F5;border:1px solid #aaa;font-size:14px;line-height:18px;opacity:0.9;'>".print_r($var,true)."</pre>";
        }
    }
?>

收集信息完成后

在微信平台上回复你要找的人的照片

这是服务器接收到图片进行响应的代码：

//接受图片进行回复
if(strtolower($postObj->MsgType=='image')){
    $pic = $postObj->PicUrl;
    //检测人脸和分析
    $api =  'http://apicn.faceplusplus.com/v2/detection/detect?api_key=3f2fd9843ac889c84f43de513bca05f2&api_secret=sDUH2FP2b3L4tSKQNHCCk17sUYsHW8HU&url='.$pic.'&attribute=glass,pose,gender,age,race,smiling';
    $rs = json_decode(file_get_contents($api),true);
    if(count($rs['face'])==0){
        $cont = "没有检测到人脸";
    }
    $face_id = $rs['face'][0]['face_id'];
 
    //得到人脸,到脸集中去找相似的脸
    $api = 'https://apicn.faceplusplus.com/v2/recognition/search?api_key=3f2fd9843ac889c84f43de513bca05f2&api_secret=sDUH2FP2b3L4tSKQNHCCk17sUYsHW8HU&faceset_name=renlianshibie&key_face_id='.$face_id;
 
    $rs = json_decode(file_get_contents($api),true);
 
    //$ps=[];
 
    foreach($rs['candidate'] as $v) {
      if( intval($v['similarity']) > 60) {
         $ps[] = $v['face_id'];
      }
    }
 
    if(empty($ps)){
        $cont = "找到相似的人";
    }else{
        $fids = implode(',', $ps);
        $api = 'https://apicn.faceplusplus.com/v2/info/get_face?api_key=3f2fd9843ac889c84f43de513bca05f2&api_secret=sDUH2FP2b3L4tSKQNHCCk17sUYsHW8HU&face_id='.$fids;
 
        $rs = json_decode(file_get_contents($api),true);
 
        if(count($rs['face_info'])==0){
            $cont = '没有找到相识的人';
        }else{
            $cont = '找到相似的人'."\n";
            foreach ($rs['face_info'] as $v) {
                $cont .= $v['url']."\n";
            }
        }                   
    }
 
    //回复用户消息
    $toUser     = $postObj->FromUserName;
    $fromUser   = $postObj->ToUserName;
    $time       = time();
    $content    = $cont;
    $msgType    = 'text';
    $template   = "<xml>
                   <ToUserName><![CDATA[%s]]></ToUserName>
                   <FromUserName><![CDATA[%s]]></FromUserName>
                   <CreateTime>%s</CreateTime>
                   <MsgType><![CDATA[%s]]></MsgType>
                   <Content><![CDATA[%s]]></Content>
                   </xml>";
    $info       = sprintf($template,$toUser,$fromUser,$time,$msgType,$content);
    echo $info;
}