人脸识别

    人脸关键点(邀测)

    如果您对文档内容有任何疑问,可以通过以下几种方式联系我们:

    • 在百度云控制台内提交工单,咨询问题类型请选择人工智能服务
    • 如有需要讨论的疑问,欢迎进入AI社区 与其他开发者们一同交流
    • 特效用户交流QQ群:583486416

    能力介绍

    支持人脸 72关键点、150关键点、201 关键点检测,关键点包括人脸、眼睛、眉毛、嘴唇以及鼻子轮廓等,此服务具有如下三个业务功能:

    • 人脸五官精准定位:支持眉毛、眼睛、鼻子、嘴、腮位置的精准定位
    • 人脸轮廓精准定位:支持单人脸/多人脸的精准定位
    • 人脸角度判断:对图片中的人脸进行多种姿态角度判断

    调用方式

    请求URL数据格式

    向API服务地址使用POST发送请求,必须在URL中带上参数access_token,可通过后台的API Key和Secret Key生成,具体方式请参考“Access Token获取”。

    示例代码

    #!/bin/bash
    curl -i -k 'https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=【百度云应用的AK】&client_secret=【百度云应用的SK】'
    <?php
    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']      = '你的 Api Key';
        $post_data['client_secret'] = '你的 Secret Key';
        $o = "";
        foreach ( $post_data as $k => $v ) 
        {
            $o.= "$k=" . urlencode( $v ). "&" ;
        }
        $post_data = substr($o,0,-1);
        
        $res = request_post($url, $post_data);
    
        var_dump($res);
    
    ?>
    package com.baidu.ai.aip.auth;
    
    import org.json.JSONObject;
    
    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.net.HttpURLConnection;
    import java.net.URL;
    import java.util.List;
    import java.util.Map;
    
    /**
     * 获取token类
     */
    public class AuthService {
    
        /**
         * 获取权限token
         * @return 返回示例:
         * {
         * "access_token": "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567",
         * "expires_in": 2592000
         * }
         */
        public static String getAuth() {
            // 官网获取的 API Key 更新为你注册的
            String clientId = "百度云应用的AK";
            // 官网获取的 Secret Key 更新为你注册的
            String clientSecret = "百度云应用的SK";
            return getAuth(clientId, clientSecret);
        }
    
        /**
         * 获取API访问token
         * 该token有一定的有效期,需要自行管理,当失效时需重新获取.
         * @param ak - 百度云官网获取的 API Key
         * @param sk - 百度云官网获取的 Securet Key
         * @return assess_token 示例:
         * "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567"
         */
        public static String getAuth(String ak, String sk) {
            // 获取token地址
            String authHost = "https://aip.baidubce.com/oauth/2.0/token?";
            String getAccessTokenUrl = authHost
                    // 1. grant_type为固定参数
                    + "grant_type=client_credentials"
                    // 2. 官网获取的 API Key
                    + "&client_id=" + ak
                    // 3. 官网获取的 Secret Key
                    + "&client_secret=" + sk;
            try {
                URL realUrl = new URL(getAccessTokenUrl);
                // 打开和URL之间的连接
                HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
                connection.setRequestMethod("GET");
                connection.connect();
                // 获取所有响应头字段
                Map<String, List<String>> map = connection.getHeaderFields();
                // 遍历所有的响应头字段
                for (String key : map.keySet()) {
                    System.err.println(key + "--->" + map.get(key));
                }
                // 定义 BufferedReader输入流来读取URL的响应
                BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                String result = "";
                String line;
                while ((line = in.readLine()) != null) {
                    result += line;
                }
                /**
                 * 返回结果示例
                 */
                System.err.println("result:" + result);
                JSONObject jsonObject = new JSONObject(result);
                String access_token = jsonObject.getString("access_token");
                return access_token;
            } catch (Exception e) {
                System.err.printf("获取token失败!");
                e.printStackTrace(System.err);
            }
            return null;
        }
    
    }
     # encoding:utf-8
    import requests 
    
    # client_id 为官网获取的AK, client_secret 为官网获取的SK
    host = 'https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=【官网获取的AK】&client_secret=【官网获取的SK】'
    response = requests.get(host)
    if response:
        print(response.json())
    #include <iostream>
    #include <curl/curl.h>
    #include <json/json.h>
    #include "access_token.h"
    // libcurl库下载链接:https://curl.haxx.se/download.html
    // jsoncpp库下载链接:https://github.com/open-source-parsers/jsoncpp/
    // 获取access_token所需要的url
    const std::string access_token_url = "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials";
    // 回调函数获取到的access_token存放变量
    // static std::string access_token_result;
    /**
     * curl发送http请求调用的回调函数,回调函数中对返回的json格式的body进行了解析,解析结果储存在result中
     * @param 参数定义见libcurl库文档
     * @return 返回值定义见libcurl库文档
     */
    static size_t callback(void *ptr, size_t size, size_t nmemb, void *stream) {
        // 获取到的body存放在ptr中,先将其转换为string格式
        std::string s((char *) ptr, size * nmemb);
        // 开始获取json中的access token项目
        Json::Reader reader;
        Json::Value root;
        // 使用boost库解析json
        reader.parse(s,root);
        std::string* access_token_result = static_cast<std::string*>(stream);
        *access_token_result = root["access_token"].asString();
        return size * nmemb;
    }
    
    /**
     * 用以获取access_token的函数,使用时需要先在百度云控制台申请相应功能的应用,获得对应的API Key和Secret Key
     * @param access_token 获取得到的access token,调用函数时需传入该参数
     * @param AK 应用的API key
     * @param SK 应用的Secret key
     * @return 返回0代表获取access token成功,其他返回值代表获取失败
     */
    int get_access_token(std::string &access_token, const std::string &AK, const std::string &SK) {
        CURL *curl;
        CURLcode result_code;
        int error_code = 0;
        curl = curl_easy_init();
        if (curl) {
            std::string url = access_token_url + "&client_id=" + AK + "&client_secret=" + SK;
            curl_easy_setopt(curl, CURLOPT_URL, url.data());
            curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
            curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
            std::string access_token_result;
            curl_easy_setopt(curl, CURLOPT_WRITEDATA, &access_token_result);
            curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, callback);
            result_code = curl_easy_perform(curl);
            if (result_code != CURLE_OK) {
                fprintf(stderr, "curl_easy_perform() failed: %s\n",
                        curl_easy_strerror(result_code));
                return 1;
            }
            access_token = access_token_result;
            curl_easy_cleanup(curl);
            error_code = 0;
        } else {
            fprintf(stderr, "curl_easy_init() failed.");
            error_code = 1;
        }
        return error_code;
    }
    using System;
    using System.Collections.Generic;
    using System.Net.Http;
    
    namespace com.baidu.ai
    {
        public static class AccessToken
    
        {
            // 调用getAccessToken()获取的 access_token建议根据expires_in 时间 设置缓存
            // 返回token示例
            public static String TOKEN = "24.adda70c11b9786206253ddb70affdc46.2592000.1493524354.282335-1234567";
    
            // 百度云中开通对应服务应用的 API Key 建议开通应用的时候多选服务
            private static String clientId = "百度云应用的AK";
            // 百度云中开通对应服务应用的 Secret Key
            private static String clientSecret = "百度云应用的SK";
    
            public static String getAccessToken() {
                String authHost = "https://aip.baidubce.com/oauth/2.0/token";
                HttpClient client = new HttpClient();
                List<KeyValuePair<String, String>> paraList = new List<KeyValuePair<string, string>>();
                paraList.Add(new KeyValuePair<string, string>("grant_type", "client_credentials"));
                paraList.Add(new KeyValuePair<string, string>("client_id", clientId));
                paraList.Add(new KeyValuePair<string, string>("client_secret", clientSecret));
    
                HttpResponseMessage response = client.PostAsync(authHost, new FormUrlEncodedContent(paraList)).Result;
                String result = response.Content.ReadAsStringAsync().Result;
                Console.WriteLine(result);
                return result;
            }
        }
    }
    var https = require('https');
    var qs = require('querystring');
    
    const param = qs.stringify({
        'grant_type': 'client_credentials',
        'client_id': '您的 Api Key',
        'client_secret': '您的 Secret Key'
    });
    
    https.get(
        {
            hostname: 'aip.baidubce.com',
            path: '/oauth/2.0/token?' + param,
            agent: false
        },
        function (res) {
            // 在标准输出中查看运行结果
            res.pipe(process.stdout);
        }
    );

    注意access_token的有效期为30天,切记需要每30天进行定期更换,或者每次请求都拉取新token

    例如此接口,使用HTTPS POST发送:

    https://aip.baidubce.com/rest/2.0/face/v1/landmark?access_token=24.f9ba9c5341b67688ab4added8bc91dec.2592000.1485570332.282335-8574074

    POST中Body的参数,按照下方请求参数说明选择即可。

    提示:如果您为百度云老用户,正在使用其他非AI的服务,可以参考百度云AKSK鉴权方式发送请求,虽然请求方式鉴权方法和本文所介绍的不同,但请求参数和返回结果一致。

    请求说明

    注意事项

    • 请求体格式化:Content-Type为application/json,通过json格式化请求体。
    • Base64编码:请求的图片需经过Base64编码,图片的base64编码指将图片数据编码成一串字符串,使用该字符串代替图像地址。您可以首先得到图片的二进制,然后用Base64格式编码即可。需要注意的是,图片的base64编码是不包含图片头的,如data:image/jpg;base64,
    • 图片格式:现支持PNG、JPG、JPEG、BMP,不支持GIF图片

    请求示例

    HTTP方法:POST

    请求URL:https://aip.baidubce.com/rest/2.0/face/v1/landmark

    URL参数:

    参数
    access_token 通过API Key和Secret Key获取的access_token,参考“Access Token获取”

    Header:

    参数
    Content-Type application/json

    Body中放置请求参数,参数详情如下:

    请求参数

    参数 必选 类型 说明
    appid string app标识 (由数字、字母、下划线组成),长度限制48B
    image string 图片信息(数据大小应小于10M 分辨率应小于1920*1080)
    image_type string 图片类型
    BASE64:图片的base64值;
    URL:图片的 URL( 下载图片时可能由于网络等原因导致下载图片时间过长)
    FACE_TOKEN: 人脸标识
    max_face_num uint32 最多处理人脸的数目. 默认值为1(仅检测图片中面积最大的那个人脸) 最大值10
    face_field string 包括age,gender,landmark4,landmark72,landmark150,landmark201信息,用逗号分隔. 默认只返回face_token、人脸框、概率和旋转角度

    示例代码 :

    提示一:使用示例代码前,请记得替换其中的示例Token、图片地址或Base64信息。

    提示二:部分语言依赖的类或库,请在代码注释中查看下载地址。

    # encoding:utf-8
    
    import requests
    import json, base64
    
    '''
    人脸检测与关键点检测
    '''
    
    request_url = "https://aip.baidubce.com/rest/2.0/face/v1/landmark"
    filename = '[输入图片路径]'
    file = open(filename, 'rb')
    image = file.read()
    file.close() 
    img_base64 = base64.b64encode(image)
    
    access_token = '[调用鉴权接口获取的token]'
    request_url = request_url + "?access_token=" + access_token
    headers = {'content-type': 'application/json'}
    
    req_data = json.dumps({'image': img_base64.decode(), 'image_type': 'BASE64', 'face_field': 'landmark150'})
    response = requests.post(request_url, data=req_data, headers=headers)
    if response:
        print (response.json())

    返回说明

    返回参数

    • 72点关键点返回结果
    字段 必选 类型 说明
    face_num int 图片中的人脸数量
    face_list array 人脸信息列表 字段信息见下
    face_token string 人脸标志
    location array 人脸在图片中的位置
    +left double 人脸区域离左边界的距离
    +top double 人脸区域离上边界的距离
    +width double 人脸区域的宽度
    +height double 人脸区域的高度
    +rotation int64 人脸框相对于竖直方向的顺时针旋转角,[-180,180]
    face_probability double 人脸置信度,范围0-1
    angle array 人脸旋转参数 具体说明参考人脸空间姿态角参考
    +yaw double 三维旋转之左右旋转角[-90(左), 90(右)]
    +pitch double 三维旋转之俯仰角度[-90(上), 90(下)]
    +roll double 平面内旋转角[-180(逆时针), 180(顺时针)]
    age double 年龄 face_field包含age时返回
    gender array 性别 face_field包含gender时返回
    +type string male:男性 female:女性
    +probability double 性别置信度,范围0~1
    landmark72 array 72个特征点位置 face_field包含landmark72时返回
    • 150点关键点返回结果
    字段 必选 类型 说明
    face_num int 图片中的人脸数量
    face_list array 人脸信息列表 字段信息见下
    face_token string 人脸标志
    location array 人脸在图片中的位置
    +left double 人脸区域离左边界的距离
    +top double 人脸区域离上边界的距离
    +width double 人脸区域的宽度
    +height double 人脸区域的高度
    +rotation int64 人脸框相对于竖直方向的顺时针旋转角,[-180,180]
    face_probability double 人脸置信度,范围0-1
    angle array 人脸旋转参数 具体说明参考人脸空间姿态角参考
    +yaw double 三维旋转之左右旋转角[-90(左), 90(右)]
    +pitch double 三维旋转之俯仰角度[-90(上), 90(下)]
    +roll double 平面内旋转角[-180(逆时针), 180(顺时针)]
    landmark150 array 150个特征点位置 face_field包含landmark150时返回
    • 201点关键点返回结果
    字段 必选 类型 说明
    face_num int 图片中的人脸数量
    face_list array 人脸信息列表 字段信息见下
    face_token string 人脸标志
    location array 人脸在图片中的位置
    +left double 人脸区域离左边界的距离
    +top double 人脸区域离上边界的距离
    +width double 人脸区域的宽度
    +height double 人脸区域的高度
    +rotation int64 人脸框相对于竖直方向的顺时针旋转角,[-180,180]
    face_probability double 人脸置信度,范围0-1
    angle array 人脸旋转参数 具体说明参考人脸空间姿态角参考
    +yaw double 三维旋转之左右旋转角[-90(左), 90(右)]
    +pitch double 三维旋转之俯仰角度[-90(上), 90(下)]
    +roll double 平面内旋转角[-180(逆时针), 180(顺时针)]
    landmark201 array 201个特征点位置 face_field包含landmark201时返回
    • 72点关键点返回示例

      {
        "error_code": 0,
        "error_msg": "SUCCESS",
        "log_id": 1928749930,
        "timestamp": 1587886328,
        "cached": 0,
        "result": {
            "face_num": 1,
            "face_list": [
                {
                    "face_token": "d80fc864a9f11ca97f753b7fd6ef3092",
                    "location": {
                        "left": 148.2,
                        "top": 207.76,
                        "width": 293,
                        "height": 265,
                        "rotation": 0
                    },
                    "face_probability": 1,
                    "angle": {
                        "yaw": 19.13,
                        "pitch": 17.13,
                        "roll": -3.5
                    },
                    "landmark201": [
                        {
                            "cheek_right_1": {
                                "x": 152.91139221191,
                                "y": 234.10575866699
                            },
                            "cheek_right_3": {
                                "x": 153.21405029297,
                                "y": 275.29922485352
                            },
                            "cheek_right_5": {
                                "x": 159.1178894043,
                                "y": 317.43710327148
                            },
                            "cheek_right_7": {
                                "x": 171.67828369141,
                                "y": 359.82891845703
                            },
                            "cheek_right_9": {
                                "x": 187.34191894531,
                                "y": 402.29333496094
                            },
                            "cheek_right_11": {
                                "x": 209.47039794922,
                                "y": 448.70611572266
                            },
                            "chin_2": {
                                "x": 244.76583862305,
                                "y": 480.13912963867
                            },
                            "cheek_left_11": {
                                "x": 300.36502075195,
                                "y": 472.90335083008
                            },
                            "cheek_left_9": {
                                "x": 355.99075317383,
                                "y": 439.84826660156
                            },
                            "cheek_left_7": {
                                "x": 402.11898803711,
                                "y": 393.20904541016
                            },
                            "cheek_left_5": {
                                "x": 427.60656738281,
                                "y": 340.88400268555
                            },
                            "cheek_left_3": {
                                "x": 442.78765869141,
                                "y": 287.72296142578
                            },
                            "cheek_left_1": {
                                "x": 453.259765625,
                                "y": 234.46209716797
                            },
                            "eye_right_corner_right": {
                                "x": 166.43855285645,
                                "y": 245.62696838379
                            },
                            "eye_right_eyelid_upper_2": {
                                "x": 178.73571777344,
                                "y": 233.48094177246
                            },
                            "eye_right_eyelid_upper_4": {
                                "x": 194.54188537598,
                                "y": 231.23136901855
                            },
                            "eye_right_eyelid_upper_6": {
                                "x": 209.59561157227,
                                "y": 238.01022338867
                            },
                            "eye_right_corner_left": {
                                "x": 219.60101318359,
                                "y": 252.86766052246
                            },
                            "eye_right_eyelid_lower_6": {
                                "x": 206.45573425293,
                                "y": 256.78121948242
                            },
                            "eye_right_eyelid_lower_4": {
                                "x": 191.26301574707,
                                "y": 257.60192871094
                            },
                            "eye_right_eyelid_lower_2": {
                                "x": 177.1402130127,
                                "y": 253.22375488281
                            },
                            "eye_right_eyeball_center": {
                                "x": 197.69207763672,
                                "y": 242.78115844727
                            },
                            "eyebrow_right_corner_right": {
                                "x": 152.5193939209,
                                "y": 218.0311126709
                            },
                            "eyebrow_right_upper_2": {
                                "x": 166.62945556641,
                                "y": 206.35087585449
                            },
                            "eyebrow_right_upper_3": {
                                "x": 183.5559387207,
                                "y": 209.04162597656
                            },
                            "eyebrow_right_upper_4": {
                                "x": 200.37629699707,
                                "y": 216.20118713379
                            },
                            "eyebrow_right_corner_left": {
                                "x": 215.19021606445,
                                "y": 231.66654968262
                            },
                            "eyebrow_right_lower_3": {
                                "x": 197.2017364502,
                                "y": 226.71070861816
                            },
                            "eyebrow_right_lower_2": {
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                                "y": 217.85374450684
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                                "y": 252.36630249023
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                            "eyebrow_left_upper_3": {
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                                "y": 210.38291931152
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                                "y": 222.89102172852
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                            "nose_left_contour_3": {
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                            "nose_left_contour_2": {
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                            "nose_left_contour_1": {
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                                "x": 219.67320251465,
                                "y": 375.18218994141
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                            "mouth_lip_upper_outer_6": {
                                "x": 239.92309570312,
                                "y": 374.76977539062
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                            "mouth_lip_upper_outer_9": {
                                "x": 270.28350830078,
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                            "mouth_corner_left_outer": {
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                                "x": 273.26431274414,
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                            "mouth_lip_lower_outer_6": {
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                                "y": 410.22521972656
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                                "x": 219.5506439209,
                                "y": 403.01010131836
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                                "y": 385.11706542969
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                                "x": 223.11337280273,
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                    ]
                }
            ]
        }
      }
    • 150点关键点返回示例

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          "error_msg": "SUCCESS",
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          "timestamp": 1584341469,
          "cached": 0,
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                          "mouth_lip_upper_inner_8": {
                              "x": 91.2,
                              "y": 170.78
                          },
                          "mouth_lip_upper_inner_10": {
                              "x": 96.53,
                              "y": 169.86
                          },
                          "mouth_lip_upper_inner_11": {
                              "x": 98.81,
                              "y": 169.52
                          },
                          "mouth_lip_lower_inner_11": {
                              "x": 99.1,
                              "y": 171.05
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                          "mouth_lip_lower_inner_10": {
                              "x": 96.9,
                              "y": 172.53
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                          "mouth_lip_lower_inner_8": {
                              "x": 91.76,
                              "y": 174.86
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                          "mouth_lip_lower_inner_7": {
                              "x": 89.21,
                              "y": 175.55
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                          "mouth_lip_lower_inner_5": {
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                          "mouth_lip_lower_inner_4": {
                              "x": 80.45,
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                          "mouth_lip_lower_inner_2": {
                              "x": 73.9,
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                          "mouth_lip_lower_inner_1": {
                              "x": 70.65,
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                      }
                  }
              ]
          }
      }
      • 201点关键点返回示例
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        "error_code": 0,
        "error_msg": "SUCCESS",
        "log_id": 1928749930,
        "timestamp": 1587886328,
        "cached": 0,
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                        "iris_left_9": {
                            "x": 57.619876861572,
                            "y": 189.85971069336
                        },
                        "iris_left_10": {
                            "x": 57.992046356201,
                            "y": 190.19557189941
                        },
                        "iris_left_11": {
                            "x": 58.506317138672,
                            "y": 190.3910369873
                        },
                        "iris_left_12": {
                            "x": 59.06840133667,
                            "y": 190.31591796875
                        },
                        "iris_left_13": {
                            "x": 59.484573364258,
                            "y": 190.00793457031
                        },
                        "iris_left_14": {
                            "x": 59.801601409912,
                            "y": 189.56636047363
                        },
                        "iris_left_15": {
                            "x": 59.937400817871,
                            "y": 189.02279663086
                        },
                        "iris_left_16": {
                            "x": 59.994979858398,
                            "y": 188.47799682617
                        },
                        "iris_left_17": {
                            "x": 59.908092498779,
                            "y": 187.91714477539
                        },
                        "iris_left_18": {
                            "x": 59.693229675293,
                            "y": 187.42846679688
                        },
                        "iris_left_19": {
                            "x": 59.357315063477,
                            "y": 186.98899841309
                        },
                        "iris_left_20": {
                            "x": 58.83500289917,
                            "y": 186.74018859863
                        },
                        "iris_right_1": {
                            "x": 77.913948059082,
                            "y": 186.52035522461
                        },
                        "iris_right_2": {
                            "x": 77.751182556152,
                            "y": 184.79627990723
                        },
                        "iris_right_3": {
                            "x": 77.291893005371,
                            "y": 184.87088012695
                        },
                        "iris_right_4": {
                            "x": 76.81241607666,
                            "y": 185.17738342285
                        },
                        "iris_right_5": {
                            "x": 76.51399230957,
                            "y": 185.63529968262
                        },
                        "iris_right_6": {
                            "x": 76.399871826172,
                            "y": 186.14614868164
                        },
                        "iris_right_7": {
                            "x": 76.425010681152,
                            "y": 186.71411132812
                        },
                        "iris_right_8": {
                            "x": 76.59375,
                            "y": 187.21925354004
                        },
                        "iris_right_9": {
                            "x": 76.89958190918,
                            "y": 187.63000488281
                        },
                        "iris_right_10": {
                            "x": 77.306015014648,
                            "y": 187.93461608887
                        },
                        "iris_right_11": {
                            "x": 77.76798248291,
                            "y": 188.10162353516
                        },
                        "iris_right_12": {
                            "x": 78.355964660645,
                            "y": 188.07786560059
                        },
                        "iris_right_13": {
                            "x": 78.838737487793,
                            "y": 187.83233642578
                        },
                        "iris_right_14": {
                            "x": 79.188194274902,
                            "y": 187.45365905762
                        },
                        "iris_right_15": {
                            "x": 79.389739990234,
                            "y": 186.96867370605
                        },
                        "iris_right_16": {
                            "x": 79.451263427734,
                            "y": 186.44125366211
                        },
                        "iris_right_17": {
                            "x": 79.35481262207,
                            "y": 185.87980651855
                        },
                        "iris_right_18": {
                            "x": 79.112213134766,
                            "y": 185.42335510254
                        },
                        "iris_right_19": {
                            "x": 78.747856140137,
                            "y": 185.04452514648
                        },
                        "iris_right_20": {
                            "x": 78.234527587891,
                            "y": 184.81198120117
                        },
                        "forehead_center": {
                            "x": 63.854957580566,
                            "y": 161.62615966797
                        },
                        "forehead_right_1": {
                            "x": 56.716361999512,
                            "y": 162.98860168457
                        },
                        "forehead_right_2": {
                            "x": 50.169933319092,
                            "y": 165.94499206543
                        },
                        "forehead_right_3": {
                            "x": 45.235385894775,
                            "y": 171.05480957031
                        },
                        "forehead_right_4": {
                            "x": 42.774684906006,
                            "y": 177.78215026855
                        },
                        "forehead_right_5": {
                            "x": 42.371360778809,
                            "y": 185.02729797363
                        },
                        "forehead_left_1": {
                            "x": 70.29483795166,
                            "y": 161.40893554688
                        },
                        "forehead_left_2": {
                            "x": 76.429832458496,
                            "y": 163.07518005371
                        },
                        "forehead_left_3": {
                            "x": 81.494247436523,
                            "y": 166.90705871582
                        },
                        "forehead_left_4": {
                            "x": 85.017692565918,
                            "y": 172.2216796875
                        },
                        "forehead_left_5": {
                            "x": 87.215446472168,
                            "y": 178.24891662598
                        }
                    }
                }
            ]
        }
      }

    人脸空间姿态角参考

    姿态角分为Pitch、Roll、Yaw,用于表示人脸在空间三维坐标系内的角度,常用于判断识别角度的界限值。 各角度阈值如下:

    • Pitch:三维旋转之俯仰角度,范围:[-90(上), 90(下)],推荐俯仰角绝对值不大于20度;
    • Roll:平面内旋转角,范围:[-180(逆时针), 180(顺时针)],推荐旋转角绝对值不大于20度;
    • Yaw:三维旋转之左右旋转角,范围:[-90(左), 90(右)],推荐旋转角绝对值不大于20度;

    各角度范围示意图如下:

    示意图

    72个关键点示意图

    对应landmark72个点的顺序,序号从0-71,且每个关键点有对应的英文命名作为参数名; 关键点名称对应关系如下图

    75d76544102575308024ebace.png

    150个关键点示意图

    对应landmark150个点的顺序,序号从0-149,且每个关键点有对应的英文命名作为参数名; 关键点名称对应关系如下图

    201个关键点示意图

    image002.png

    对应landmark201个点的顺序,序号从0-200,且每个关键点有对应的英文命名作为参数名; 关键点名称对应关系如下图

    71efb8a246caabd8992354de4.png

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