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人脸关键点检测

描述

调用者提供图片文件或者图片 URL，进行人脸检测和人脸点检测。

版本

2.0

图片要求

图片格式：JPG(JPEG)，PNG 图片像素尺寸：最小4848像素，最大40964096像素 图片文件大小：10MB 最小人脸像素尺寸：系统能够检测到的人脸框为一个正方形，正方形边长的最小值为图像短边长度的48分之一，最小值不低于48像素。例如图片为 40963200 像素，则最小人脸像素尺寸为 6666 像素。 人脸数限制：最多10个人脸

人脸点标准图：

1、人脸点关键点标准图（118点）。

image

2、人脸点关键点标准图（171点）。

image

调用 URL

    正式环境：https://openapi.meitu.com
    任务提交接口：https://openapi.meitu.com/api/v1/sdk/sync/push
    任务名称(task)：/v1/Facial_Keypoint_Detection/487161
    任务类型(task_type)：formula

调用方法

POST

Content-Type: application/json

权限

开放平台接口签名

请求参数

是否必选参数名类型参数说明
必选paramsstring算法参数（JSON 字符串）
必选init_imagesobject[]多媒体文件列表
必选taskstring固定 /v1/Facial_Keypoint_Detection/487161
必选task_typestring固定 formula
可选sync_timeoutint默认 30，同步超时时间

init_images 多媒体文件参数，结构说明如下

是否必选参数名类型参数说明
必选urlstring图片 URL 或 base64
必选profileobject属性信息描述

profile 属性信息描述

是否必选参数名类型参数说明
必选media_profilesobject媒体属性信息
必选versionstring固定 v1

media_profiles 媒体属性信息

是否必选参数名类型参数说明
必选media_data_typestringurl 表示 URL；jpg 等类型表示 base64

params 推理参数是 JSON 字符串，其结构说明如下

{
  "rsp_media_type": "url",
  "parameter": {
    "return_landmark": 3
  }
}
是否必选字段类型说明
可选rsp_media_typestring默认 url；jpg 表示 base64
必选parameterobject算法核心参数对象

parameter 算法参数详情

是否必选参数名类型参数说明
可选return_landmarkint是否检测并返回人脸五官和轮廓的关键点

return_landmark 可选值说明

值含义返回形式
0不返回关键点无
1返回 106 点关键点百分比百分比坐标
2返回 106 点关键点实值实际像素坐标
3返回 118 点关键点百分比百分比坐标
4返回 118 点关键点实值实际像素坐标
5返回 171 点关键点百分比百分比坐标
6返回 171 点关键点实值实际像素坐标

输入值示例

{
  "task": "/v1/Facial_Keypoint_Detection/487161",
  "task_type": "formula",
  "init_images": [
    {
      "url": "https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTcwOTE4MjgwMA==/58fdb25d-8e6f-4026-4a5e-45d9894190a4.png",
      "profile": {
        "media_profiles": {
          "media_data_type": "url"
        },
        "version": "v1"
      }
    }
  ],
  "params": "{\"rsp_media_type\":\"url\",\"parameter\":{\"return_landmark\":3}}",
  "sync_timeout": 30
}

返回值说明

注意，生成的结果，会定期清理，请及时下载保存
字段类型说明
request_idstring请求标识
trace_idstring链路追踪标识
codeint业务状态码，0 表示请求受理成功
error_codeint错误码，成功时为 0
messagestring业务信息
tipsany补充提示，可为 null
dataobject任务状态和算法结果

data 中单个元素的字段说明

字段类型参数说明
statusNumber-1 未找到任务；0 创建成功；1 执行中；2 失败；9 超时，使用查询接口查询；10 成功
resultObject任务处理结果
progressNumber任务进度，取值范围 0～1，1 表示完成
predict_elapsedNumber预测处理耗时，单位：毫秒
create_timeNumber任务创建时间戳，单位：毫秒
task_idString任务 ID
custom_task_idString自定义任务 ID
trace_idString跟踪 ID
client_infoString客户端信息
init_imagesArray初始输入媒体信息

result 中单个元素的字段说明

字段类型参数说明
idString任务结果 ID
urlsArray生成的媒体文件 URL 列表
parametersObject任务参数信息
dataObject任务处理详细数据
imagesArray生成的图片 URL 列表
mtlab_resObjectMeitu Lab 内部处理结果
media_info_listArray媒体信息列表，每个元素包含 media_data、media_extra、media_profiles
error_codeInt算法错误码，处理错误时为 20001
error_msgString算法错误信息，处理错误时为 PROCESS_ERROR

parameters 字段说明

字段类型参数说明
landmark_typeInt人脸关键点类型，值参考 return_landmark 可选值
versionString接口版本号

media_info_list 字段说明

字段类型参数说明
media_dataString媒体文件 URL
media_extraObject媒体扩展信息，包含识别到的人脸信息 faces
media_profilesObject媒体属性信息，例如分辨率、帧率等（此接口中为 null）

faces 字段说明

字段类型参数说明
face_landmarkArray人脸关键点坐标数组，坐标为百分比形式 [x, y]
face_rectangleObject人脸区域矩形，包含 left、top、width、height（百分比形式）

face_rectangle 字段说明

字段类型说明
leftFloat用图片宽的百分比，表示人脸框左上角横坐标
topFloat用图片高的百分比，表示人脸框左上角纵坐标
widthFloat用图片宽的百分比，表示人脸框宽度
heightFloat用图片高的百分比，表示人脸框高度

返回值示例

请求成功返回示例

Response Status：200

content-type 为 application/json; charset=utf-8

{
  "request_id": "",
  "trace_id": "",
  "code": 0,
  "error_code": 0,
  "message": "success",
  "tips": null,
  "data": {
    "status": 10,
    "result": {
      "id": "t_mt1a3i5n7b95923c6b-xxxx-4045-8f0e-9e309efdc7ae",
      "urls": [
        ""
      ],
      "parameters": {
        "landmark_type": 3,
        "version": "2.0.0"
      },
      "data": {
        "ErrorCode": 0,
        "ErrorMsg": "",
        "error_code": 0,
        "error_msg": "",
        "media_info_list": [
          {
            "media_data": "",
            "media_extra": {
              "faces": [
                {
                  "face_landmark": [
                    [
                      0.35435236,
                      0.2828878
                    ],
                    [
                      0.35482758,
                      0.28858864
                    ]
                  ],
                  "face_rectangle": {
                    "height": 0.052405804,
                    "left": 0.37931174,
                    "top": 0.26455134,
                    "width": 0.069874406
                  }
                }
              ]
            },
            "media_profiles": null
          }
        ],
        "msg_id": "",
        "parameter": {
          "landmark_type": 3,
          "version": "2.0.0"
        }
      },
      "images": [
        ""
      ],
      "mtlab_res": {
        "ErrorCode": 0,
        "ErrorMsg": "",
        "error_code": 0,
        "error_msg": "",
        "media_info_list": [
          {
            "media_data": "",
            "media_extra": {
              "faces": [
                {
                  "face_landmark": [
                    [
                      0.35435236,
                      0.2828878
                    ],
                    [
                      0.35482758,
                      0.28858864
                    ]
                  ],
                  "face_rectangle": {
                    "height": 0.052405804,
                    "left": 0.37931174,
                    "top": 0.26455134,
                    "width": 0.069874406
                  }
                }
              ]
            },
            "media_profiles": null
          }
        ],
        "msg_id": "",
        "parameter": {
          "landmark_type": 3,
          "version": "2.0.0"
        }
      },
      "media_info_list": [
        {
          "media_data": "",
          "media_extra": {
            "faces": [
              {
                "face_landmark": [
                  [
                    0.35435236,
                    0.2828878
                  ],
                  [
                    0.35482758,
                    0.28858864
                  ]
                ],
                "face_rectangle": {
                  "height": 0.052405804,
                  "left": 0.37931174,
                  "top": 0.26455134,
                  "width": 0.069874406
                }
              }
            ]
          },
          "media_profiles": null
        }
      ]
    },
    "progress": 0,
    "predict_elapsed": 10000,
    "create_time": 1770285187417,
    "task_id": "t_mt1a3i5n7b95923c6b-xxxx-4045-8f0e-9e309efdc7ae",
    "custom_task_id": "",
    "trace_id": "",
    "client_info": "",
    "init_images": null
  }
}

需要查询返回示例

使用 查询接口 接口查询

Response Status：200

content-type 为 application/json; charset=utf-8

{
  "request_id": "",
  "trace_id": "",
  "code": 0,
  "error_code": 0,
  "message": "success",
  "tips": null,
  "data": {
    "status": 9,
    "result": {
      "id": "t_mt1a3i5n7b95923c6b-xxxx-4045-8f0e-9e309efdc7ae"
    },
    "progress": 0,
    "predict_elapsed": 10000,
    "create_time": 1770285187417,
    "task_id": "t_mt1a3i5n7b95923c6b-xxxx-4045-8f0e-9e309efdc7ae",
    "custom_task_id": "",
    "trace_id": "ace75fe5-xxxx-46ad-a1db-cbcfde308f8a",
    "client_info": "",
    "init_images": null
  }
}

请求失败返回示例

Response Status：400

content-type 为 application/json; charset=utf-8

{
  "request_id": "",
  "trace_id": "",
  "code": 0,
  "error_code": 20001,
  "message": "PROCESS_ERROR",
  "tips": null,
  "data": {
    "status": 2,
    "result": {
      "error_code": 20001,
      "error_msg": "PROCESS_ERROR"
    },
    "progress": 0,
    "predict_elapsed": 0,
    "create_time": 1770285187417,
    "task_id": "t_mt1a3i5n7b95923c6b-xxxx-4045-8f0e-9e309efdc7ae",
    "custom_task_id": "",
    "trace_id": "",
    "client_info": "",
    "init_images": null
  }
}

通用的错误代码与信息

详见 API 错误码

当前 API 特有错误：20001 PROCESS_ERROR，表示处理错误。

SDK 调用示例

Python

import json

import requests
from sign_sdk import sign

def api_call_example():
    key = "your_api_key"
    secret = "your_api_secret"
    url = "https://openapi.meitu.com/api/v1/sdk/sync/push"
    method = "POST"

    headers = {
        "Content-Type": "application/json",
        sign.HeaderHost: "openapi.meitu.com",
    }
    inner_params = {
        "rsp_media_type": "url",
        "parameter": {"return_landmark": 3},
    }
    payload = {
        "task": "/v1/Facial_Keypoint_Detection/487161",
        "task_type": "formula",
        "init_images": [
            {
                "url": "https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTcwOTE4MjgwMA==/58fdb25d-8e6f-4026-4a5e-45d9894190a4.png",
                "profile": {
                    "media_profiles": {"media_data_type": "url"},
                    "version": "v1",
                },
            }
        ],
        "params": json.dumps(inner_params, ensure_ascii=False),
        "sync_timeout": 30,
    }
    body = json.dumps(payload, ensure_ascii=False)

    signer = sign.Signer(key, secret)
    signed_request = signer.sign(url, method, headers, body)
    response = requests.Session().send(signed_request)
    print(f"Status: {response.status_code}")
    print(f"Response: {response.text}")

if __name__ == "__main__":
    api_call_example()

Go

package main

import (
	"fmt"
	"io"
	"net/http"

	"github.com/mtlab/api/signer"
)

func main() {
	key := "your_api_key"
	secret := "your_api_secret"
	signObj := signer.NewSigner(key, secret)

	url := "https://openapi.meitu.com/api/v1/sdk/sync/push"
	method := http.MethodPost
	headers := make(http.Header)
	headers.Set(signer.HeaderHost, "openapi.meitu.com")
	headers.Set("Content-Type", "application/json")

	body := `{
  "task": "/v1/Facial_Keypoint_Detection/487161",
  "task_type": "formula",
  "init_images": [{
    "url": "https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTcwOTE4MjgwMA==/58fdb25d-8e6f-4026-4a5e-45d9894190a4.png",
    "profile": {
      "media_profiles": {"media_data_type": "url"},
      "version": "v1"
    }
  }],
  "params": "{\"rsp_media_type\":\"url\",\"parameter\":{\"return_landmark\":3}}",
  "sync_timeout": 30
}`

	req, err := signObj.Sign(url, method, headers, body)
	if err != nil {
		fmt.Println("Failed to sign request:", err)
		return
	}

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		fmt.Println("Failed to send request:", err)
		return
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		fmt.Println("Read response failed:", err)
		return
	}
	fmt.Println("Response:", resp.StatusCode, string(responseBody))
}

PHP

<?php
require 'signer.php';

$key = 'your_api_key';
$secret = 'your_api_secret';
$signer = new Signer($key, $secret);

$url = 'https://openapi.meitu.com/api/v1/sdk/sync/push';
$method = 'POST';
$headers = ['Content-Type' => 'application/json'];

$innerParams = json_encode([
    'rsp_media_type' => 'url',
    'parameter' => ['return_landmark' => 3],
]);

$body = json_encode([
    'task' => '/v1/Facial_Keypoint_Detection/487161',
    'task_type' => 'formula',
    'init_images' => [
        [
            'url' => 'https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTcwOTE4MjgwMA==/58fdb25d-8e6f-4026-4a5e-45d9894190a4.png',
            'profile' => [
                'media_profiles' => ['media_data_type' => 'url'],
                'version' => 'v1',
            ],
        ],
    ],
    'params' => $innerParams,
    'sync_timeout' => 30,
]);

$curl = $signer->sign($url, $method, $headers, $body);
$response = curl_exec($curl);
$status = curl_getinfo($curl, CURLINFO_HTTP_CODE);

if ($status === 0) {
    echo 'Error: ' . curl_error($curl);
} else {
    echo "Status: {$status}\n";
    echo "Response: {$response}\n";
}
curl_close($curl);
?>

Java

package com.meitu.openai.common;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

public class Main {
    public static void main(String[] args) throws Exception {
        Signer signer = new Signer("your_api_key", "your_api_secret");
        String url = "https://openapi.meitu.com/api/v1/sdk/sync/push";
        String method = "POST";

        Map<String, String> headers = new HashMap<>();
        headers.put("Content-Type", "application/json");
        headers.put(Signer.HeaderHost, "openapi.meitu.com");

        String body = "{\n" +
                "  \"task\": \"/v1/Facial_Keypoint_Detection/487161\",\n" +
                "  \"task_type\": \"formula\",\n" +
                "  \"init_images\": [{\n" +
                "    \"url\": \"https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTcwOTE4MjgwMA==/58fdb25d-8e6f-4026-4a5e-45d9894190a4.png\",\n" +
                "    \"profile\": {\n" +
                "      \"media_profiles\": {\"media_data_type\": \"url\"},\n" +
                "      \"version\": \"v1\"\n" +
                "    }\n" +
                "  }],\n" +
                "  \"params\": \"{\\\"rsp_media_type\\\":\\\"url\\\",\\\"parameter\\\":{\\\"return_landmark\\\":3}}\",\n" +
                "  \"sync_timeout\": 30\n" +
                "}";

        Map<String, String> signedHeaders = signer.sign(url, method, headers, body);
        HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
        connection.setRequestMethod(method);
        for (Map.Entry<String, String> entry : signedHeaders.entrySet()) {
            connection.setRequestProperty(entry.getKey(), entry.getValue());
        }
        connection.setDoOutput(true);
        connection.getOutputStream().write(body.getBytes(StandardCharsets.UTF_8));

        int status = connection.getResponseCode();
        InputStream stream = status >= 400
                ? connection.getErrorStream()
                : connection.getInputStream();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(stream))) {
            StringBuilder response = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                response.append(line);
            }
            System.out.println("Response: " + status + " " + response);
        }
    }
}