时间:2021-07-01 10:21:17 帮助过:105人阅读
本文为大家分享了微信小程序实现人脸检测的具体代码,供大家参考,具体内容如下
因为本文章的人脸检测技术运用的是百度云人工智能,首先要有百度云的账号。
近期,人脸识别已经升级到了V3,开启了测试,所以也依照v3文档进行了更新;
1、人脸识别的每个接口,都需要用到百度云的access_token,首先获取 access-token ,一个月之后access_token过期;可以将获取的存入文件,再次引用时可以判断其是否过期,然后引用或者重新获取:
结果为字符串且输出到屏幕上 curl_setopt($curl, CURLOPT_POST, 1);//post提交方式 curl_setopt($curl, CURLOPT_POSTFIELDS, $curlPost); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE); curl_setopt($curl, CURLOPT_SSLVERSION, 1); $data = curl_exec($curl);//运行curl curl_close($curl); return $data; } function access_token(){ $file= __DIR__ .'\access_token'; if(file_exists($file)){ $str=file_get_contents($file); try{ $arr=json_decode($str,true); if(is_array($arr)){ $totime=$arr['totime']; if($totime>time()){ return $arr['access_token']; exit; } } }catch(Exception $e){ } } $url = 'https://aip.baidubce.com/oauth/2.0/token'; $post_data['grant_type'] = 'client_credentials'; $post_data['client_id'] = 'fRuY7eOPxBzIHf4qxiYeQOHT'; $post_data['client_secret'] = 'oe7L7aPc5rcKfSewvb5h6xFX2a8dEQN1'; $o = ""; foreach ( $post_data as $k => $v ) { $o.= "$k=" . urlencode( $v ). "&" ; } $post_data = substr($o,0,-1); $res = request_post($url, $post_data); $arr=json_decode($res,true); if(isset($arr['access_token']) && isset($arr['expires_in'])){ $data['access_token'] = $arr['access_token']; $data['totime']= time() + $arr['expires_in'] - 86400; file_put_contents($file, json_encode($data)); return $arr['access_token']; }else{ return false; } }
- //获取access_token
- function request_post($url = '', $param = '') {
- if (empty($url) || empty($param)) {
- return false;
- }
- $postUrl = $url;
- $curlPost = $param;
- $curl = curl_init();//初始化curl
- curl_setopt($curl, CURLOPT_URL,$postUrl);//抓取指定网页
- curl_setopt($curl, CURLOPT_HEADER, 0);//设置header
- curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//要求
2、创建初始化方法,需要用到 Secret_Key、API_Key、App_ID,为用户基本资料;
- private function init_face(){
- $App_ID = '用户appid';
- $API_Key = '用户api_key';
- $Secret_Key = '用户secret_key';
- $dir = APP_PATH.'/face-sdk/';
- require_once $dir."AipFace.php";
- return new \AipFace($App_ID, $API_Key, $Secret_Key);
- }
(thinkPHP框架)
将所需检测图片放入文件;具体参数可依照百度云人脸识别v3文档查看。
- // 人脸检测
- public function facevalid(){
- $file = './Upload/2018-05-17/1.png';
- if (!file_exists($file)) {
- die('文件不存在!');
- }
- $image = base64_encode(file_get_contents($file));
- $imageType = 'BASE64';
- //如果有可选参数
- $options = array();
- $options['max_face_num'] = 2;
- $client = $this->init_face();
- $ret = $client->detect($image,$imageType,$options);
- // print_r($ret);
- if ($ret['error_code'] == 0) {//有人脸
- $result = $ret['result'];
- $face_num = $result['face_num'];
- if ($face_num==1) { //人脸数量为1
- $face_probability = $result['face_list'][0]['face_probability'];
- if ($face_probability==1) { //可靠性为1
- $user_id = myguid();
- $group_id = $this->face_group();
- $res = $client->addUser($image,'BASE64',$group_id,$user_id);
- // print_r($res);
- if ($res['error_code']==0) {
- echo "人脸检测完成,并入库";
- }
- }else{
- die('可靠性为:'.$face_probability);
- }
- }else{
- die('人脸数大于1');
- }
- }else{
- die('没有人脸');
- }
- }
- // 获取组
- private function face_group(){
- $groupname = '10001';
- $client = $this->init_face();
- $ret = $client->getGroupList();
- if ($ret['error_code'] == 0) {
- $grouplist = $ret['result']['group_id_list'];
- if (in_array($groupname, $grouplist)) {
- return $groupname;
- }else{
- $ret = $client->groupAdd($groupname);
- if ($ret['error_code'] == 0) {
- return $groupname;
- }else{
- return false;
- }
- }
- }else{
- return false;
- }
- }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。