Description

Provide an image file or image URL to perform face detection and facial attribute analysis.

Version

2.0

Image Requirements

Image formats: JPG (JPEG), PNG Image dimensions: minimum 48 × 48 pixels; maximum 4096 × 4096 pixels Maximum image file size: 10 MB Minimum face dimensions: The system detects a face using a square bounding box. The minimum side length of this square is 1/48 of the shorter image dimension and must be at least 48 pixels. For example, for a 4096 × 3200-pixel image, the minimum face dimensions are 66 × 66 pixels. Maximum number of faces: 10

API URL

    Production environment: https://openapi.meitu.com
    Task submission endpoint: https://openapi.meitu.com/api/v1/sdk/sync/push
    Task name (task): /v1/Macro_facial_analysis/487163
    Task type (task_type): formula

Method

POST

Content-Type: application/json

Authentication

Open Platform API Signature

Request Parameters

Required	Parameter	Type	Description
Yes	params	string	Algorithm parameters (JSON string)
Yes	init_images	object[]	Media file list
Yes	task	string	Fixed value: `/v1/Macro_facial_analysis/487163`
Yes	task_type	string	Fixed value: `formula`
No	sync_timeout	int	Synchronous timeout; default: 30

The init_images media file parameters are structured as follows:

Required	Parameter	Type	Description
Yes	url	string	Image URL or Base64-encoded data
Yes	profile	object	Attribute information

profile parameter description

Required	Parameter	Type	Description
Yes	media_profiles	object	Media file attribute information
Yes	version	string	Fixed value: `v1`

Parameters in media_profiles

Required	Parameter	Type	Description
Yes	media_data_type	string	`url` indicates a URL; formats such as `jpg` indicate Base64-encoded data

params inference parameter description

params is a JSON string. After parsing, it has the following structure:

{
  "rsp_media_type": "url",
  "parameter": {
    "return_attributes": "gender,age,race,beauty,glasses,mustache,emotion,eyelid,poseestimation"
  }
}

Required	Field	Type	Description
No	rsp_media_type	string	Default: `url`; `jpg` indicates Base64-encoded data
Yes	parameter	object	Core algorithm parameter object

parameter description

Required	Parameter	Type	Description
No	return_attributes	String	Specifies whether to detect and return attributes inferred from facial features, such as age, gender, smile, and race. List the attributes to detect in a comma-separated string. Attribute order is unrestricted, and spaces must not be added between attributes. If this field is absent or empty, no attributes are detected.
No	return_landmark	Int	Specifies whether to detect and return keypoints for facial features and contours. Default: `0`

Allowed values for return_attributes

Value	Meaning
gender	Gender
age	Age
race	Race
beauty	Attractiveness score
glasses	Eyewear
mustache	Facial hair
emotion	Emotion
eyelid	Eyelid type
poseestimation	Face pose information

Allowed values for return_landmark

Value	Meaning
0	Do not return facial keypoints
1	Return 106 normalized keypoints
2	Return 106 absolute-coordinate keypoints
3	Return 118 normalized keypoints
4	Return 118 absolute-coordinate keypoints
5	Return 171 normalized keypoints
6	Return 171 absolute-coordinate keypoints

Request Example

{
  "task": "/v1/Macro_facial_analysis/487163",
  "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_attributes\":\"gender,age,race,beauty,glasses,mustache,emotion,eyelid,poseestimation\",\"return_landmark\":0}}",
  "sync_timeout": 30
}

Response Fields

Generated results are periodically deleted. Download and save them promptly.

Field	Type	Description
request_id	String	Request ID
trace_id	String	Trace ID
code	Number	HTTP-layer status code; `0` indicates success
error_code	Number	Business error code; `0` indicates success. See API Error Codes
message	String	Response message; `success` on success
tips	any	Additional information; may be null
data	Object	Business data returned by the API

data field description

Field	Type	Description
status	Number	Status code: -1 task not found; 0 created successfully; 1 processing; 2 failed; 9 timed out—use the Query API; 10 succeeded
result	Object	Task processing result
progress	Number	Task progress, ranging from 0 to 1; `1` indicates completion
predict_elapsed	Number	Estimated processing time, in milliseconds
create_time	Number	Task creation timestamp, in milliseconds
task_id	String	Task ID
custom_task_id	String	Custom task ID
trace_id	String	Trace ID
client_info	String	Client information
init_images	Array	Original input media information

result field description

Field	Type	Description
id	String	Unique task ID
urls	Array	Output media URL list
parameters	Object	Request parameters. Example: `{"landmark_type":0,"version":"2.0.0"}`
data	Object	Task result data
images	Array	Output image URL list
mtlab_res	Object	Raw response result (same content as `data`)
media_info_list	Array	Media information list

media_info_list field description

Field	Type	Description
media_data	String	Media data (Base64-encoded data or an empty string)
media_extra	Object	Additional media information
media_profiles	Object	Media profile information; usually empty

faces field description

Field	Type	Description
face_attributes	Object	Facial attributes. See the following table for details.
face_rectangle	Object	Face bounding-box position. All values are proportions: `left` is the x-coordinate of the box's top-left corner as a proportion of the image width; `top` is the y-coordinate as a proportion of the image height; `width` is the box width as a proportion of the image width; `height` is the box height as a proportion of the image height.
face_landmark	List	Facial keypoint coordinate array

face_attributes field description

Field	Type	Description
gender	Object	`"gender": {"value": 1}` Gender analysis result. A `value` of 1 indicates male, and 0 indicates female.
age	Object	`"age": {"value": 21}` Age analysis result. `value` is a non-negative integer representing the estimated age.
race	Object	`"race":{"value": 0}` Race analysis result. A `value` of 0 indicates White, 1 Asian, 2 Black, 3 North Indian, 4 South Indian, and 5 Southeast Asian.
beauty_score	Object	`"beauty_score":{"value": 90}` Attractiveness score, ranging from 0 to 100.
emotion	Object	`"emotion":{"value": 0}` Emotion analysis result. A `value` of 0 indicates sadness, 1 neutral, 2 smiling, 3 laughing, 4 surprise, 5 fear, 6 anger, and 7 disgust.
right_eyelid	Object	`"right_eyelid":{"value": 0}` Right-eyelid analysis result. A `value` of 0 indicates a single eyelid, 1 a double eyelid, and 2 an inner double eyelid.
left_eyelid	Object	`"left_eyelid":{"value": 0}` Left-eyelid analysis result. A `value` of 0 indicates a single eyelid, 1 a double eyelid, and 2 an inner double eyelid.
glasses_type	Object	`"glasses_type":{"value": 0}` Eyewear type analysis result. A `value` of 0 indicates no glasses, 1 regular glasses, and 2 sunglasses.
glasses_thick	Object	`"glasses_thick":{"value": 0}` Frame thickness analysis result. A `value` of 0 indicates no glasses, 1 a thin frame, and 2 a thick frame.
glasses_size	Object	`"glasses_size":{"value": 0}` Frame size analysis result. A `value` of 0 indicates no glasses, 1 a large frame, and 2 a small frame.
glasses_frame	Object	`"glasses_frame":{"value": 0}` Full-rim/semi-rimless/rimless analysis result. A `value` of 0 indicates no glasses, 1 rimless, 2 full-rim, and 3 semi-rimless.
glasses_shape	Object	`"glasses_shape":{"value": 0}` Frame shape analysis result. A `value` of 0 indicates no glasses, 1 another shape, 2 a square frame, and 3 a round frame.
mustache_type	Object	`"mustache_type":{"value": 0}` Facial hair type analysis result. A `value` of 0 indicates no facial hair, 1 stubble, and 2 a mustache or beard.
mustache_length	Object	`"mustache_length":{"value": 0}` Facial hair length analysis result. A `value` of 0 indicates no facial hair, 1 short, 2 medium, and 3 long.
mustache_shape	Object	`"mustache_shape":{"value": 0}` Facial hair shape analysis result. A `value` of 0 indicates no facial hair, 1 a partial goatee, 2 a full goatee, 3 a handlebar mustache, 4 a full beard, and 5 sideburns.
mustache_thick	Object	`"mustache_thick":{"value": 0}` Facial hair density analysis result. A `value` of 0 indicates no facial hair, 1 sparse, and 2 dense.
roll_angle	Object	`"roll_angle": {"value": 1.1601325273513794}` Face roll angle. `value` is the roll angle in degrees.
yaw_angle	Object	`"yaw_angle": {"value": 6.59846305847168}` Face yaw angle. `value` is the yaw angle in degrees.
pitch_angle	Object	`"pitch_angle": {"value": 13.970479011535645}` Face pitch angle. `value` is the pitch angle in degrees.
translate_x	Object	`"translate_x": {"value": -10.500459671020508}` Face translation along the X axis. `value` is the X-axis translation.
translate_y	Object	`"translate_y": {"value": 1.797804832458496}` Face translation along the Y axis. `value` is the Y-axis translation.
translate_z	Object	`"translate_z": {"value": 417.212646484375}` Face translation along the Z axis. `value` is the Z-axis translation.

Note: Euler angles use the center as the origin, while the 3D coordinate system uses the top-left corner as the origin.

face_rectangle field description

Field	Type	Description
left	Float	X-coordinate of the face box's top-left corner (as a proportion of image width)
top	Float	Y-coordinate of the face box's top-left corner (as a proportion of image height)
width	Float	Face box width (as a proportion of image width)
height	Float	Face box height (as a proportion of image height)

Allowed values for return_landmark

Value	Meaning
0	Do not return facial keypoints
1	Return 106 normalized keypoints
2	Return 106 absolute-coordinate keypoints
3	Return 118 normalized keypoints
4	Return 118 absolute-coordinate keypoints
5	Return 171 normalized keypoints
6	Return 171 absolute-coordinate keypoints

Failure Response Fields

Field	Type	Description
data	String	Response content
message	String	Error message
error_code	Number	Error code

API-Specific Error Codes and Messages

ErrorCode	Error Message	Description
20001	PROCESS_ERROR	Processing error

Response Examples

Successful Response Example

{
  "request_id": "",
  "trace_id": "",
  "code": 0,
  "error_code": 0,
  "message": "success",
  "tips": null,
  "data": {
    "status": 10,
    "result": {
      "id": "t_mt1a3i5n7b2e53ffab-xxxx-4802-a5ff-dc812744ffa7",
      "media_info_list": [
        {
          "media_data": "",
          "media_extra": {
            "faces": [
              {
                "face_attributes": {
                  "age": {"value": 17},
                  "gender": {"value": 0}
                },
                "face_rectangle": {
                  "height": 0.052405804,
                  "left": 0.37931174,
                  "top": 0.26455134,
                  "width": 0.069874406
                }
              }
            ]
          },
          "media_profiles": null
        }
      ]
    },
    "progress": 1,
    "predict_elapsed": 10000,
    "create_time": 1770290367382,
    "task_id": "t_mt1a3i5n7b2e53ffab-xxxx-4802-a5ff-dc812744ffa7",
    "custom_task_id": "",
    "trace_id": "",
    "client_info": "",
    "init_images": null
  }
}

Pending Response Example

Use the Query API to retrieve the result.

Response Status: 200

Content-Type: application/json; charset=utf-8

{
  "request_id": "",
  "trace_id": "",
  "code": 0,
  "error_code": 0,
  "message": "success",
  "tips": null,
  "data": {
    "status": 9,
    "result": {
      "id": "t_mt1a3i5n7b2e53ffab-xxxx-4802-a5ff-dc812744ffa7"
    },
    "progress": 0,
    "predict_elapsed": 10000,
    "create_time": 1770290367382,
    "task_id": "t_mt1a3i5n7b2e53ffab-xxxx-4802-a5ff-dc812744ffa7",
    "custom_task_id": "",
    "trace_id": "e3642be0-xxxx-41ba-af05-92098703fd58",
    "client_info": "",
    "init_images": null
  }
}

Complete Successful Algorithm Response Example

Response Status: 200; Content-Type: application/json; charset=utf-8

{
  "request_id": "",
  "trace_id": "",
  "code": 0,
  "error_code": 0,
  "message": "success",
  "tips": null,
  "data": {
    "status": 10,
    "result": {
      "id": "t_mt1a3i5n7b2e53ffab-xxxx-4802-a5ff-dc812744ffa7",
      "urls": [
        ""
      ],
      "parameters": {
        "landmark_type": 0,
        "version": "2.0.0"
      },
      "data": {
        "ErrorCode": 0,
        "ErrorMsg": "",
        "error_code": 0,
        "error_msg": "",
        "media_info_list": [
          {
            "media_data": "",
            "media_extra": {
              "faces": [
                {
                  "face_attributes": {
                    "age": {
                      "value": 17
                    },
                    "beauty_score": {
                      "value": 87
                    },
                    "emotion": {
                      "value": 1
                    },
                    "gender": {
                      "value": 0
                    },
                    "glasses_frame": {
                      "value": 0
                    },
                    "glasses_shape": {
                      "value": 0
                    },
                    "glasses_size": {
                      "value": 0
                    },
                    "glasses_thick": {
                      "value": 0
                    },
                    "glasses_type": {
                      "value": 0
                    },
                    "left_eyelid": {
                      "value": 1
                    },
                    "mustache_length": {
                      "value": 0
                    },
                    "mustache_shape": {
                      "value": 0
                    },
                    "mustache_thick": {
                      "value": 0
                    },
                    "mustache_type": {
                      "value": 0
                    },
                    "pitch_angle": {
                      "value": -2.675837516784668
                    },
                    "race": {
                      "value": 1
                    },
                    "right_eyelid": {
                      "value": 2
                    },
                    "roll_angle": {
                      "value": -7.028405666351318
                    },
                    "translate_x": {
                      "value": -118.0142822265625
                    },
                    "translate_y": {
                      "value": -418.3360595703125
                    },
                    "translate_z": {
                      "value": 2067.922119140625
                    },
                    "yaw_angle": {
                      "value": -27.13144302368164
                    }
                  },
                  "face_rectangle": {
                    "height": 0.052405804,
                    "left": 0.37931174,
                    "top": 0.26455134,
                    "width": 0.069874406
                  }
                }
              ]
            },
            "media_profiles": null
          }
        ],
        "msg_id": "",
        "parameter": {
          "landmark_type": 0,
          "version": "2.0.0"
        }
      },
      "images": [
        ""
      ],
      "mtlab_res": {
        "ErrorCode": 0,
        "ErrorMsg": "",
        "error_code": 0,
        "error_msg": "",
        "media_info_list": [
          {
            "media_data": "",
            "media_extra": {
              "faces": [
                {
                  "face_attributes": {
                    "age": {
                      "value": 17
                    },
                    "beauty_score": {
                      "value": 87
                    },
                    "emotion": {
                      "value": 1
                    },
                    "gender": {
                      "value": 0
                    },
                    "glasses_frame": {
                      "value": 0
                    },
                    "glasses_shape": {
                      "value": 0
                    },
                    "glasses_size": {
                      "value": 0
                    },
                    "glasses_thick": {
                      "value": 0
                    },
                    "glasses_type": {
                      "value": 0
                    },
                    "left_eyelid": {
                      "value": 1
                    },
                    "mustache_length": {
                      "value": 0
                    },
                    "mustache_shape": {
                      "value": 0
                    },
                    "mustache_thick": {
                      "value": 0
                    },
                    "mustache_type": {
                      "value": 0
                    },
                    "pitch_angle": {
                      "value": -2.675837516784668
                    },
                    "race": {
                      "value": 1
                    },
                    "right_eyelid": {
                      "value": 2
                    },
                    "roll_angle": {
                      "value": -7.028405666351318
                    },
                    "translate_x": {
                      "value": -118.0142822265625
                    },
                    "translate_y": {
                      "value": -418.3360595703125
                    },
                    "translate_z": {
                      "value": 2067.922119140625
                    },
                    "yaw_angle": {
                      "value": -27.13144302368164
                    }
                  },
                  "face_rectangle": {
                    "height": 0.052405804,
                    "left": 0.37931174,
                    "top": 0.26455134,
                    "width": 0.069874406
                  }
                }
              ]
            },
            "media_profiles": null
          }
        ],
        "msg_id": "",
        "parameter": {
          "landmark_type": 0,
          "version": "2.0.0"
        }
      },
      "media_info_list": [
        {
          "media_data": "",
          "media_extra": {
            "faces": [
              {
                "face_attributes": {
                  "age": {
                    "value": 17
                  },
                  "beauty_score": {
                    "value": 87
                  },
                  "emotion": {
                    "value": 1
                  },
                  "gender": {
                    "value": 0
                  },
                  "glasses_frame": {
                    "value": 0
                  },
                  "glasses_shape": {
                    "value": 0
                  },
                  "glasses_size": {
                    "value": 0
                  },
                  "glasses_thick": {
                    "value": 0
                  },
                  "glasses_type": {
                    "value": 0
                  },
                  "left_eyelid": {
                    "value": 1
                  },
                  "mustache_length": {
                    "value": 0
                  },
                  "mustache_shape": {
                    "value": 0
                  },
                  "mustache_thick": {
                    "value": 0
                  },
                  "mustache_type": {
                    "value": 0
                  },
                  "pitch_angle": {
                    "value": -2.675837516784668
                  },
                  "race": {
                    "value": 1
                  },
                  "right_eyelid": {
                    "value": 2
                  },
                  "roll_angle": {
                    "value": -7.028405666351318
                  },
                  "translate_x": {
                    "value": -118.0142822265625
                  },
                  "translate_y": {
                    "value": -418.3360595703125
                  },
                  "translate_z": {
                    "value": 2067.922119140625
                  },
                  "yaw_angle": {
                    "value": -27.13144302368164
                  }
                },
                "face_rectangle": {
                  "height": 0.052405804,
                  "left": 0.37931174,
                  "top": 0.26455134,
                  "width": 0.069874406
                }
              }
            ]
          },
          "media_profiles": null
        }
      ]
    },
    "progress": 0,
    "predict_elapsed": 10000,
    "create_time": 1770290367382,
    "task_id": "t_mt1a3i5n7b2e53ffab-xxxx-4802-a5ff-dc812744ffa7",
    "custom_task_id": "",
    "trace_id": "",
    "client_info": "",
    "init_images": null
  }
}

Failed Response Example

Response Status: 400; Content-Type: 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": 1770290367382,
    "task_id": "t_mt1a3i5n7b2e53ffab-xxxx-4802-a5ff-dc812744ffa7",
    "custom_task_id": "",
    "trace_id": "",
    "client_info": "",
    "init_images": null
  }
}

General Error Codes and Messages

See API Error Codes.

SDK Examples

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_attributes": "gender,age,race,beauty,glasses,mustache,emotion,eyelid,poseestimation",
            "return_landmark": 0,
        },
    }
    payload = {
        "task": "/v1/Macro_facial_analysis/487163",
        "task_type": "formula",
        "init_images": [
            {
                "url": "https://example.com/input.jpg",
                "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/Macro_facial_analysis/487163",
  "task_type": "formula",
  "init_images": [{
    "url": "https://example.com/input.jpg",
    "profile": {
      "media_profiles": {"media_data_type": "url"},
      "version": "v1"
    }
  }],
  "params": "{\"rsp_media_type\":\"url\",\"parameter\":{\"return_attributes\":\"gender,age,race,beauty,glasses,mustache,emotion,eyelid,poseestimation\",\"return_landmark\":0}}",
  "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_attributes' => 'gender,age,race,beauty,glasses,mustache,emotion,eyelid,poseestimation',
        'return_landmark' => 0,
    ],
]);

$body = json_encode([
    'task' => '/v1/Macro_facial_analysis/487163',
    'task_type' => 'formula',
    'init_images' => [
        [
            'url' => 'https://example.com/input.jpg',
            '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/Macro_facial_analysis/487163\",\n" +
                "  \"task_type\": \"formula\",\n" +
                "  \"init_images\": [{\n" +
                "    \"url\": \"https://example.com/input.jpg\",\n" +
                "    \"profile\": {\n" +
                "      \"media_profiles\": {\"media_data_type\": \"url\"},\n" +
                "      \"version\": \"v1\"\n" +
                "    }\n" +
                "  }],\n" +
                "  \"params\": \"{\\\"rsp_media_type\\\":\\\"url\\\",\\\"parameter\\\":{\\\"return_attributes\\\":\\\"gender,age,race,beauty,glasses,mustache,emotion,eyelid,poseestimation\\\",\\\"return_landmark\\\":0}}\",\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);
        }
    }
}

Macro Facial Analysis