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face++人脸识别

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QQ图片20140812183958
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上星期去参加TC 北京（Tech China Beijing）峰会，当然是免费学生票啦…..2800的门票我就呵呵了，不过学生票除了参加论坛之外权限慢慢，很满足啦展会上体验了些类似iwatch，自平衡脚踏车，虚拟3D等设备，整体来说还不错，其实我就是奔着两样东西去的：午餐+Google glass。哈哈哈，不多说了，跑远了。Google glass一直就想玩玩，毕竟一万多买不起，这次算是实现了。只不过比较坑的是只搭载了出门问问一个app，只能问问路。我最想体验的是人脸识别功能，可惜了

刚好最近在做微信，鉴于此，于是想到了加入人脸识别功能。

算是试玩吧，我就选择了face++，看上去还不错的样子。

首先当然是注册，创建应用，获取API Key和API Secret了，这里不多说。

Face++提供人脸识别接口，检测给定图片(Image)中的所有人脸(Face)的位置和相应的面部属性接口地址如下：

http://apicn.faceplusplus.com/v2/detection/detect?api_key=YOUR_API_KEY&

api_secret=YOUR_API_SECRET&url=http%3A%2F%2Ffaceplusplus.com%2Fstatic%2Fimg%2Fdemo%2F1.jpg

&attribute=glass,pose,gender,age,race,smiling

**参数** **是否必须** **含义**
api_key 必须 App的Face++ API Key
api_secret 必须 APP的Face++ API Secret
url 或 img[POST] 必须 待检测图片的URL 或者 通过POST方法上传的二进制数据，原始图片大小需要小于3M
mode 可选 检测模式可以是normal(默认) 或者 oneface 。在oneface模式中，检测器仅找出图片中最大的一张脸。
attribute 可选 可以是none或者由逗号分割的属性列表。默认为gender, age, race, smiling。目前支持的属性包括：gender, age, race, smiling, glass, pose
tag 可选 可以为图片中检测出的每一张Face指定一个不包含^@,&=*'”等非法字符且不超过255字节的字符串作为tag，tag信息可以通过 /info/get_face 查询
async 可选 如果置为true，该API将会以异步方式被调用；也就是立即返回一个session id，稍后可通过/info/get_session查询结果。默认值为false。
返回结果如下： 
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{
  "face": [{
    "attribute": {
      "age": {
        "range": 5,
        "value": 24
      },
      "gender": {
        "confidence": 99.9999,
        "value": "Female"
      },
      "glass": {
        "confidence": 99.4157,
        "value": "None"
      },
      "pose": {
        "pitch_angle": {
          "value": 1e-06
        },
        "roll_angle": {
          "value": 0.650337
        },
        "yaw_angle": {
          "value": -0.42409
        }
      },
      "race": {
        "confidence": 98.058,
        "value": "Asian"
      },
      "smiling": {
        "value": 3.78394
      }
    },
    "face_id": "9b4e21eba34985325293d5add1c7e255",
    "position": {
      "center": {
        "x": 50.121951,
        "y": 35.97561
      },
      "eye_left": {
        "x": 43.465122,
        "y": 30.670488
      },
      "eye_right": {
        "x": 56.80878,
        "y": 30.821951
      },
      "height": 27.560976,
      "mouth_left": {
        "x": 45.649512,
        "y": 45.041707
      },
      "mouth_right": {
        "x": 55.134878,
        "y": 44.858049
      },
      "nose": {
        "x": 50.183415,
        "y": 38.410732
      },
      "width": 27.560976
    },
    "tag": ""
  }],
  "img_height": 410,
  "img_id": "438d1eea1ba05fb112c8f3430f0b219b",
  "img_width": 410,
  "session_id": "d48f8e1acb2d421c8ae2cb146298a7f4",
  "url": "http://faceplusplus.com/static/img/demo/1.jpg"
}

取结果参数中的gender，age，race，smiling等参数 ，如

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"attribute": {
  "age": {
    "range": 5,
    "value": 17
  },
  "gender": {
    "confidence": 99.9781,
    "value": "Female"
  },
  "glass": {
    "confidence": 99.9815,
    "value": "None"
  },
  "pose": {
    "pitch_angle": {
      "value": 0.000019753399999999996
    },
    "roll_angle": {
      "value": 1.75177
    },
    "yaw_angle": {
      "value": 4
    }
  },
  "race": {
    "confidence": 99.471,
    "value": "Asian"
  },
  "smiling": {
    "value": 87.1365
  }
}

上述结果表示：

年龄age为17，误差在5岁 性别为female，表示女，置信度为99% 种族为亚洲Asian， 微笑度 87%

和图片比较一下，还是比较一致的

040959401895877

face++的SDK如下：

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<!–?PHP  
 /** * Face++ PHP SDK * author: Tianye * since: 2013-12-11 **/  
 class Facepp{  
 ######################################################  
 ### If you choose Amazon(US) server,please use the ###  
 ### http://apius.faceplusplus.com/v2 ### ### or ###  
 ### https://apius.faceplusplus.com/v2 ###  
 ######################################################  
 var $server = ‘http://apicn.faceplusplus.com/v2’;  
 #var $server = ‘https://apicn.faceplusplus.com/v2’;  
 #var $server = ‘http://apius.faceplusplus.com/v2’;  
 #var $server = ‘https://apius.faceplusplus.com/v2’;  
 #############################################  
 ### set your api key and api secret here. ###  
 #############################################  
 var $api_key = ‘你的api_key ‘;  
 var $api_secret = ‘你的api_secret ‘;  
 public function __construct($api_key=NULL, $api_secret=NULL, $server=NULL)  
 {  
 if($api_key){ $this—>api_key = $api_key;  
 }  
 if($api_secret){  
 $this->api_secret = $api_secret;  
 }  
 if($server){  
 $this->server = $server;  
 }  
 }

/**  
 * @param $method : The Face++ API  
 * @param $params : Request Parameters  
 * @return : Array {‘http_code’:’Http Status Code’, ‘request_url’:’Http Request URL’,’body’:’ JSON Response’}  
 **/  
 public function execute($method,$params){  
 if(empty($params)){  
 $params=array();  
 }  
 $params[‘api_key’] = $this->api_key;  
 $params[‘api_secret’] = $this->api_secret;

return $this->request("{$this->server}{$method}",$params);  
 }

private function request($request_url , $request_body){  
 $useragent = ‘Faceplusplus PHP SDK/1.0’;  
 $curl_handle = curl_init();  
 curl_setopt($curl_handle, CURLOPT_URL, $request_url);  
 curl_setopt($curl_handle, CURLOPT_FILETIME, TRUE);  
 curl_setopt($curl_handle, CURLOPT_FRESH_CONNECT, FALSE);  
 curl_setopt($curl_handle, CURLOPT_CLOSEPOLICY, CURLCLOSEPOLICY_LEAST_RECENTLY_USED);  
 curl_setopt($curl_handle, CURLOPT_MAXREDIRS, 5);  
 curl_setopt($curl_handle, CURLOPT_HEADER, FALSE);  
 curl_setopt($curl_handle, CURLOPT_RETURNTRANSFER, TRUE);  
 curl_setopt($curl_handle, CURLOPT_TIMEOUT, 5184000);  
 curl_setopt($curl_handle, CURLOPT_CONNECTTIMEOUT, 120);  
 curl_setopt($curl_handle, CURLOPT_NOSIGNAL, TRUE);  
 curl_setopt($curl_handle, CURLOPT_REFERER, $request_url);  
 curl_setopt($curl_handle, CURLOPT_USERAGENT, $useragent);  
 if (extension_loaded(‘zlib’)){  
 curl_setopt($curl_handle, CURLOPT_ENCODING, ”);  
 }  
 curl_setopt($curl_handle, CURLOPT_POST, TRUE);  
 if(array_key_exists(‘img’,$request_body)){  
 $request_body[‘img’] = ‘@’.$request_body[‘img’];  
 }else{  
 $request_body=http_build_query($request_body);  
 }  
 curl_setopt($curl_handle, CURLOPT_POSTFIELDS, $request_body);  
 $response_text = curl_exec($curl_handle);  
 $reponse_header = curl_getinfo($curl_handle);  
 curl_close($curl_handle);  
 return array(‘http_code’=>$reponse_header[‘http_code’],’request_url’=>$request_url,’body’=>$response_text);  
 }  
 }

调用方法：

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<!–?PHP require_once ‘facepp_sdk.php’; ######################## ### example ### ######################## $facepp = new Facepp(); #detect local image $params=array(‘img’=–>'{image file path}’);  
 $params[‘attribute’] = ‘gender,age,race,smiling,glass,pose’;  
 $response = $facepp->execute(‘/detection/detect’,$params);  
 print_r($response);

#detect image by url  
 $params=array(‘url’=>’http://www.faceplusplus.com.cn/wp-content/themes/faceplusplus/assets/img/demo/1.jpg’);  
 $response = $facepp->execute(‘/detection/detect’,$params);  
 print_r($response);

if($response[‘http_code’]==200){  
 #json decode  
 $data = json_decode($response[‘body’],1);  
 #get face landmark  
 foreach ($data[‘face’] as $face) {  
 $response = $facepp->execute(‘/detection/landmark’,array(‘face_id’=>$face[‘face_id’]));  
 print_r($response);  
 }  
 #create person  
 $response = $facepp->execute(‘/person/create’,array(‘person_name’=>’unique_person_name’));  
 print_r($response);

#delete person  
 $response = $facepp->execute(‘/person/delete’,array(‘person_name’=>’unique_person_name’));  
 print_r($response);

}

在微信中再将结果整理成文本消息就可以了。下面是实际使用结果：
getimgdata

感兴趣的可以关注服务号bistu体验。

当然了，这只是最简单的face++和微信结合使用的案例，face++还有许多更为强大的功能等待着大家的实际应用。

悲剧的是本人识别了几张。。奈何长相太老成，识别最低年龄也要28…..俺才大二啊。。说多了都是泪~

face++人脸识别

https://ldsun.com/2014/08/20/face-人脸识别/

Author

Ludis

Posted on

2014-08-20

Updated on

2014-08-20

Licensed under

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