百度API使用php实现人脸识别
百度API使用php实现人脸识别
1.注册百度开发者账号。
https://login.bce.baidu.com/?account= 注册登录成功后,进入控制台,在左边的导航栏找到产品-》人工智能-》人脸识别:
创建应用。创建应用成功后拿到应用的API Key和Secret Key
2.接口调用-获取access token
调用人脸识别接口前需要获取access token,示例代码:
function execCurl($url, $param) {
if (empty($url) || empty($param)) {
return array(‘result’ => false, ‘err_msg’ => ‘url or param is null’);
}
$curl = curl_init();//初始化curl
curl_setopt($curl, CURLOPT_URL, $url);//抓取指定网页
curl_setopt($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, $param);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
$data = curl_exec($curl);//运行curl
$curl_err_msg = curl_error($curl);
curl_close($curl);
if($data === false) {
return array(‘result’ => false, ‘err_msg’ => $curl_err_msg);
}else {
return array(‘result’ => true, ‘data’ => $data);
}
}
$url = ‘https://aip.baidubce.com/oauth/2.0/token’;
$param = array(
‘grant_type’ => ‘client_credentials’,
‘client_id’ => ‘你的API Key’,
‘client_secret’ => ‘你的Secret Key’
);
$result = execCurl($url, $param);
3.调用人脸检查接口
如果需要判断一张图片中的人脸,是否符合后续识别或者对比的条件,在请求时在face_field参数中请求quality。
下面示例是请求图文为base64转码字符串(转码不能包含头信息),也可以传图片网络地址,官方文档:https://ai.baidu.com/docs#/Face-Detect-V3/top
示例代码:
function checkPictureToCheckFace($image_path, $access_token) {
$url = ‘https://aip.baidubce.com/rest/2.0/face/v3/detect?access_token=’ . $access_token;
$param = array(
‘image’ => base64EncodeImage($image_path),
‘image_type’ => ‘BASE64’,
‘face_field’ => ‘quality’
);
$param = json_encode($param);
$result = execCurl($url, $param);
if($result[‘result’] == false) return $result;
$data = json_decode($result[‘data’], true);
if($data[‘error_code’] != 0) return array(‘result’ => false, ‘err_msg’ => ‘上传的人脸不符合要求,请重新上传五官清晰的真实头像’);
$err_result = array(‘result’ => false, ‘err_msg’ => ‘上传的人脸不符合要求,请重新上传五官清晰的真实头像!’);
$quality = $data[‘result’][‘face_list’][0][‘quality’];
if($quality[‘occlusion’][‘left_eye’] > 0.6) return $err_result; // 左眼被遮挡的阈值
if($quality[‘occlusion’][‘right_eye’] > 0.6) return $err_result; // 右眼被遮挡的阈值
if($quality[‘occlusion’][‘nose’] > 0.7) return $err_result; // 鼻子被遮挡的阈值
if($quality[‘occlusion’][‘mouth’] > 0.7) return $err_result; // 嘴巴被遮挡的阈值
if($quality[‘occlusion’][‘left_cheek’] > 0.8) return $err_result; // 左脸颊被遮挡的阈值
if($quality[‘occlusion’][‘right_cheek’] > 0.8) return $err_result; // 右脸颊被遮挡的阈值
if($quality[‘occlusion’][‘chin_contour’] > 0.6) return $err_result; // 下巴被遮挡阈值
if($quality[‘blur’] != 0 && $quality[‘blur’] > 0.7) return $err_result; // 模糊度范围 0是最清晰,1是最模糊
if($quality[‘illumination’] < 40) return $err_result; // 光照范围
if($quality[‘completeness’] == 0) return $err_result; // 人脸完整度 0为人脸溢出图像边界,1为人脸都在图像边界内
return array(‘result’ => true);
}
function execCurl($url, $param) {
if (empty($url) || empty($param)) {
return array(‘result’ => false, ‘err_msg’ => ‘url or param is null’);
}
$curl = curl_init();//初始化curl
curl_setopt($curl, CURLOPT_URL, $url);//抓取指定网页
curl_setopt($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, $param);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
$data = curl_exec($curl);//运行curl
$curl_err_msg = curl_error($curl);
curl_close($curl);
if($data === false) {
return array(‘result’ => false, ‘err_msg’ => $curl_err_msg);
}else {
return array(‘result’ => true, ‘data’ => $data);
}
}
function base64EncodeImage($image_path) {
$base64_image = ”;
$image_info = getimagesize($image_path);
$image_data = fread(fopen($image_path, ‘r’), filesize($image_path));
$base64_image = chunk_split(base64_encode($image_data));
return $base64_image;
}
$image_path = ‘image/1.jpg’;
$access_token = ‘上一步的获取access token’;
$result = checkPictureToCheckFace($image_path, $access_token);
判断是否符合人脸识别检查的字段说明:
阿里云人脸识别PHP调用示例
Code Sample
1、环境依赖
composer.json
{
“require”: {
“guzzlehttp/guzzle”: “~6.0”
}
}
2、使用网络图片
<?php
use GuzzleHttp\Psr7\Request;
use GuzzleHttp\Client;
require_once ‘vendor\autoload.php’;
// 参数设置
$akId = “********”;
$akSecret = “********”;
$body1 = ‘{“type”:”0″,”image_url”:”https://ss0.bdstatic.com/94oJfD_bAAcT8t7mm9GUKT-xh_/timg?image&quality=100&size=b4000_4000&sec=1553926699&di=3e4484731c8897c57e67b3f632801f9a&src=http://b-ssl.duitang.com/uploads/item/201603/28/20160328121906_ErzAB.jpeg”}’;
$url = “https://dtplus-cn-shanghai.data.aliyuncs.com/face/attribute”;
$date1 = gmdate(“D, d M Y H:i:s \G\M\T”);
// 参数构造
$options = array(
‘http’ => array(
‘header’ => array(
‘accept’=> “application/json”,
‘content-type’=> “application/json”,
‘date’=> $date1,
‘authorization’ => ”
),
‘method’ => “POST”, //可以是 GET, POST, DELETE, PUT
‘content’ => $body1
// ‘content’ => json_encode($body1)
)
);
$http = $options[‘http’];
$header = $http[‘header’];
$urlObj = parse_url($url);
if(empty($urlObj[“query”]))
$path = $urlObj[“path”];
else
$path = $urlObj[“path”].”?”.$urlObj[“query”];
$body = $http[‘content’];
if(empty($body))
$bodymd5 = $body;
else
$bodymd5 = base64_encode(md5($body,true));
$stringToSign = $http[‘method’].”\n”.$header[‘accept’].”\n”.$bodymd5.”\n”.$header[‘content-type’].”\n”.$header[‘date’].”\n”.$path;
$signature = base64_encode(
hash_hmac(
“sha1”,
$stringToSign,
$akSecret, true));
$authHeader = “Dataplus “.”$akId”.”:”.”$signature”;
$options[‘http’][‘header’][‘authorization’] = $authHeader;
# 构造Rest API Client请求
$client = new Client();
$headers = [‘Content-type’ => ‘application/json’, ‘Accept’ => ‘application/json’, ‘Authorization’ => $options[‘http’][‘header’][‘authorization’], ‘Date’ => $date1];
$request = new Request(‘POST’,’https://dtplus-cn-shanghai.data.aliyuncs.com/face/attribute’,$headers,$body1);
$response = $client->send($request);
echo $response->getBody();
?>
3、使用本地图片
<?php
use GuzzleHttp\Psr7\Request;
use GuzzleHttp\Client;
require_once ‘vendor\autoload.php’;
// 参数设置
$akId = “********”;
$akSecret = “********”;
# 读取本地图片
$image_file = ‘C:\Users\Administrator\Desktop\time.jpeg’;
$image_info = getimagesize($image_file);
$base64_image_content = “data:{$image_info[‘mime’]};base64,” . chunk_split(base64_encode(file_get_contents($image_file)));
function trimall($str)//删除所有的空格
{
$qian=array(” “,” ”,”\t”,”\n”,”\r”);
$hou=array(“”,””,””,””,””);
return str_replace($qian,$hou,$str);
}
$base64_image_content = substr($base64_image_content, 23);
$base64_image_content = trimall($base64_image_content);
// echo $base64_image_content;
$body1 = ‘{“type”:”1″,”content”:”‘.$base64_image_content.'”}’;
$url = “https://dtplus-cn-shanghai.data.aliyuncs.com/face/attribute”;
$date1 = gmdate(“D, d M Y H:i:s \G\M\T”);
// 参数构造
$options = array(
‘http’ => array(
‘header’ => array(
‘accept’=> “application/json”,
‘content-type’=> “application/json”,
‘date’=> $date1,
‘authorization’ => ”
),
‘method’ => “POST”, //可以是 GET, POST, DELETE, PUT
‘content’ => $body1
)
);
$http = $options[‘http’];
$header = $http[‘header’];
$urlObj = parse_url($url);
if(empty($urlObj[“query”]))
$path = $urlObj[“path”];
else
$path = $urlObj[“path”].”?”.$urlObj[“query”];
$body = $http[‘content’];
if(empty($body))
$bodymd5 = $body;
else
$bodymd5 = base64_encode(md5($body,true));
$stringToSign = $http[‘method’].”\n”.$header[‘accept’].”\n”.$bodymd5.”\n”.$header[‘content-type’].”\n”.$header[‘date’].”\n”.$path;
$signature = base64_encode(
hash_hmac(
“sha1”,
$stringToSign,
$akSecret, true));
$authHeader = “Dataplus “.”$akId”.”:”.”$signature”;
$options[‘http’][‘header’][‘authorization’] = $authHeader;
# 构造Rest API Client请求
$client = new Client();
$headers = [‘Content-type’ => ‘application/json’, ‘Accept’ => ‘application/json’, ‘Authorization’ => $options[‘http’][‘header’][‘authorization’], ‘Date’ => $date1];
$request = new Request(‘POST’,’https://dtplus-cn-shanghai.data.aliyuncs.com/face/attribute’,$headers,$body);
$response = $client->send($request);
echo $response->getBody();
?>
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