百度人脸识别过程记录(1)

<?php
header("Content-Type: text/html;charset=utf-8");
header("Content-type: application/json");
/*var_dump($_FILES['pic']);*/
/*
   * 1.百度AI-人脸识别，access_token获取；
   * 向API服务地址使用POST发送请求，必须在URL中带上参数access_token;
   * 采用人脸识别接口V3版本；
   */
function request_post($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);
  $data = curl_exec($curl);//运行curl
  curl_close($curl);
  return $data;
}
$url                        = 'https://aip.baidubce.com/oauth/2.0/token';
$post_data['grant_type']    = 'client_credentials';
$post_data['client_id']     = '';
$post_data['client_secret'] = '';
$o                          = "";
foreach ($post_data as $k => $v) {
  $o .= "$k=" . urlencode($v) . "&";
}
$post_data = substr($o, 0, -1);
//获取百度AI接口access_token；
$res_acc = json_decode(request_post($url, $post_data), true);
//var_dump($res_acc);
//上传图片处理，百度AI人脸识别图片格式支持PNG、JPG、JPEG、BMP;
if (isset($_FILES['pic']) && $_FILES['pic']['error'] == 0) {
  $name = md5(time());
  $ext  = explode(".", $_FILES['pic']['name']);
  $ext  = end($ext);
  $full = $name . "." . $ext;
  $rs   = move_uploaded_file($_FILES['pic']['tmp_name'], './upload/' . $full);
  if (!$rs) {
    die('上传图片出错');
  }
  //上传成功后,获取图片地址
  $pic = "https://datav.qiaodu.net/face/upload/" . $full;
  //转为Base64格式编码，不包含图片头的data:image/jpg;base64；
  $base64_img = base64_encode(file_get_contents($pic));
  /*
  * 1.人脸检测
  * 检测图片中的人脸并标记出位置信息;
  * 采用人脸识别接口V3版本；
  */
  //检测请求参数；
  $img_info[]             = '';
  $img_info["image"]      = $base64_img;
  $img_info["image_type"] = "BASE64";
  $img_info["face_field"] = "faceshape,facetype";
  //人脸检测与分析;
  $url_info   = 'https://aip.baidubce.com/rest/2.0/face/v3/detect?access_token=' . $res_acc['access_token'];
  $bodys_info = json_encode($img_info, JSON_UNESCAPED_SLASHES);//防止/或"转义；
  $res_info   = json_decode(request_post($url_info, $bodys_info), true);
  //如图片无人脸，退出；
  if (count($res_info['result']['face_num']) == 0) {
    die('没有检测出人脸');
  }
  var_dump($res_info);
  /*
   * 2.创建人脸库
   * 用于向人脸库中新增用户，及组内用户的人脸图片；
   * 采用人脸识别接口V3版本；
   */
  //前端参数传递；
  $user_id   = "01025623";
  $user_info = "Poleung";
  //百度AI检测请求参数；
  $img_addinfo["image"]            = $base64_img;
  $img_addinfo["image_type"]       = "BASE64";
  $img_addinfo["group_id"]         = "train";//用户组id，百度人脸库管理默认设置组别;
  $img_addinfo["user_id"]          = $user_id;//用户id
  $img_addinfo["user_info"]        = $user_info;//用户资料
  $img_addinfo["quality_control"]  = "LOW";//图片质量控制
  $img_addinfo["liveness_control"] = "NONE";//活体检测控制
  $img_addinfo["action_type"]      = "APPEND";//user_id重复注册时，新注册的图片操作方式;
  $url_add   = 'https://aip.baidubce.com/rest/2.0/face/v3/faceset/user/add?access_token=' . $res_acc['access_token'];
  $bodys_add = json_encode($img_addinfo, JSON_UNESCAPED_SLASHES);
  $res_add   = json_decode(request_post($url_add, $bodys_add), true);
  echo json_encode($res_add["error_msg"]);
}