AILabTools API - Facial Landmarks - API

Request

• URL: https://www.ailabapi.com/api/portrait/analysis/face-key-points
• Method: POST
• Content-Type: multipart/form-data

Image requirements

• Image format: JPEG JPG BMP PNG
• Image size: No more than 8 MB.
• Image resolution: Less than 1920x1080px.

Headers

Field	Required	Type	Description
ailabapi-api-key	YES	string	Application API KEY. Get API KEY

Body

Field	Required	Type	Scope	Default	Example	Description
image	YES	file
max_face_num	NO	integer	1 2 3 4 5 6 7 8 9 10	1		The maximum number of faces to process. The default value is 1 (only the face with the largest area in the image is detected).
face_field	NO	string	age gender landmark4 landmark72 landmark150 landmark201		age,gender,landmark4	Returns more information about the face (by default only face_token, face frame, probability and rotation angle are returned). age: Age information. gender: Gender information. landmark4: 4 feature points. landmark72: 72 feature points. landmark150: 150 feature points. landmark201: 201 feature points.

Response

Response Field Handling Flow

1. Handle Public Response Fields

   Parse and validate the Public Response Fields, checking the status code or response message to ensure the request is successful and error-free.

2. Handle Business Response Fields

   If the Public Response Fields are valid and error-free, proceed with processing the business logic in the Business Response Fields.

Public Response Fields

Viewing Public Response Fields and Error Codes

Business Response Fields

Field	Type	Scope	Description
result	object		The content of the result data returned.
+face_num	integer		The number of faces in the picture.
+face_list	array		List of face information.
++face_token	string		Face Token.
++location	object		The position of the face in the picture.
+++left	float		The distance of the face area from the left border.
+++top	float		The distance of the face area from the upper boundary.
+++width	float		The width of the face area.
+++height	float		The height of the face area.
+++rotation	integer	[-180, 180]	The clockwise rotation angle of the face frame with respect to the vertical direction.
++face_probability	float	[0, 1]	Face confidence.
++angle	object		Face rotation parameters, refer to Face Spatial Pose Angle Reference for detailed description.
+++yaw	float	[-90, 90]	The left and right rotation angle of 3D rotation.
+++pitch	float	[-90, 90]	Three-dimensional rotation of the pitch angle.
+++roll	float	[-180, 180]	In-plane rotation angle.
++age	float		Age.
++gender	object		Gender information.
+++type	string	male female
+++probability	float	[0, 1]	Gender confidence.
++landmark4	array		4 feature points.
++landmark72	array		72 feature points. Refer to 72 feature points for details.
++landmark150	object		150 feature points. Refer to 150 feature points for details.
++landmark201	object		201 feature points. Refer to 201 feature points for details.

Response Example

JSON

{
  "request_id":     "",
  "log_id":         "",
  "error_code":     0,
  "error_msg":      "",
  "error_detail":   {
    "status_code":  200,
    "code":         "",
    "code_message": "",
    "message":      ""
  },
  "result": {
    "face_num": "",
    "face_list": [
      {
        "face_token": "",
        "location": {
          "left": 0,
          "top": 0,
          "width": 0,
          "height": 0,
          "rotation": 0
        }
      }
    ],
    "face_probability": 0,
    "angle": [
      {
        "yaw": 0,
        "pitch": 0,
        "roll": 0
      }
    ],
    "age": 0,
    "gender": [
      {
        "type": "",
        "probability": 0
      }
    ],
    "landmark4": [],
    "landmark72": [],
    "landmark150": {},
    "landmark201": {}
  }
}

landmark4

[
  {
    "x": 148.37,
    "y": 100.59
  },
  {
    "x": 234.82,
    "y": 90.52
  },
  {
    "x": 199.34,
    "y": 135.81
  },
  {
    "x": 203.17,
    "y": 179.29
  }
]

landmark72

[
  {
    "x": 100.08,
    "y": 122.9
  },
  {
    "x": 106.77,
    "y": 149.07
  },
  {
    "x": 115.46,
    "y": 174.85
  },
  {
    "x": 127.3,
    "y": 199.99
  },
  {
    "x": 151.98,
    "y": 222.51
  },
  {
    "x": 181.8,
    "y": 235.05
  },
  {
    "x": 209.56,
    "y": 236.15
  },
  {
    "x": 235.09,
    "y": 227.11
  },
  {
    "x": 259.5,
    "y": 205.96
  },
  {
    "x": 274.62,
    "y": 178.35
  },
  {
    "x": 279.28,
    "y": 151.9
  },
  {
    "x": 280.94,
    "y": 125.59
  },
  {
    "x": 280.4,
    "y": 99.89
  },
  {
    "x": 128.11,
    "y": 106.45
  },
  {
    "x": 136.37,
    "y": 97.92
  },
  {
    "x": 146.18,
    "y": 94.09
  },
  {
    "x": 156.75,
    "y": 95.54
  },
  {
    "x": 167.29,
    "y": 102.81
  },
  {
    "x": 157.75,
    "y": 105.5
  },
  {
    "x": 147.51,
    "y": 107.65
  },
  {
    "x": 137.1,
    "y": 108.02
  },
  {
    "x": 148.37,
    "y": 100.59
  },
  {
    "x": 111.06,
    "y": 88.35
  },
  {
    "x": 120.9,
    "y": 71.46
  },
  {
    "x": 136.29,
    "y": 64.57
  },
  {
    "x": 152.5,
    "y": 62.86
  },
  {
    "x": 168.22,
    "y": 70.9
  },
  {
    "x": 153.23,
    "y": 72.9
  },
  {
    "x": 137.92,
    "y": 74.23
  },
  {
    "x": 123.75,
    "y": 79.02
  },
  {
    "x": 217.95,
    "y": 97.14
  },
  {
    "x": 226.23,
    "y": 87.37
  },
  {
    "x": 236.37,
    "y": 83.63
  },
  {
    "x": 246.55,
    "y": 84.88
  },
  {
    "x": 256.18,
    "y": 91.67
  },
  {
    "x": 248.15,
    "y": 95.06
  },
  {
    "x": 238.3,
    "y": 97.02
  },
  {
    "x": 227.85,
    "y": 97.26
  },
  {
    "x": 234.82,
    "y": 90.52
  },
  {
    "x": 210.71,
    "y": 65.97
  },
  {
    "x": 223.61,
    "y": 54.58
  },
  {
    "x": 238.8,
    "y": 52.63
  },
  {
    "x": 254.62,
    "y": 55.99
  },
  {
    "x": 266.84,
    "y": 69.55
  },
  {
    "x": 253.78,
    "y": 63.55
  },
  {
    "x": 239.71,
    "y": 62.6
  },
  {
    "x": 225.24,
    "y": 64.54
  },
  {
    "x": 181.11,
    "y": 101.65
  },
  {
    "x": 179.98,
    "y": 117.06
  },
  {
    "x": 178.41,
    "y": 132.61
  },
  {
    "x": 174.58,
    "y": 150.84
  },
  {
    "x": 187.7,
    "y": 148.58
  },
  {
    "x": 212.42,
    "y": 145.66
  },
  {
    "x": 223.67,
    "y": 144.55
  },
  {
    "x": 215.58,
    "y": 127.75
  },
  {
    "x": 210.32,
    "y": 113.35
  },
  {
    "x": 205.05,
    "y": 98.7
  },
  {
    "x": 199.34,
    "y": 135.81
  },
  {
    "x": 164.93,
    "y": 181.13
  },
  {
    "x": 183.01,
    "y": 172.43
  },
  {
    "x": 202.75,
    "y": 169.17
  },
  {
    "x": 221.78,
    "y": 167.99
  },
  {
    "x": 238.94,
    "y": 172.43
  },
  {
    "x": 224.92,
    "y": 186.73
  },
  {
    "x": 204.97,
    "y": 193.61
  },
  {
    "x": 183.27,
    "y": 191.76
  },
  {
    "x": 184.52,
    "y": 179
  },
  {
    "x": 203.5,
    "y": 177.11
  },
  {
    "x": 221.54,
    "y": 174.5
  },
  {
    "x": 221.62,
    "y": 178.9
  },
  {
    "x": 203.77,
    "y": 182.13
  },
  {
    "x": 184.82,
    "y": 183.2
  }
]

landmark150

{
  "cheek_right_1": {
    "x": 101.17,
    "y": 125.61
  },
  "cheek_right_3": {
    "x": 108.34,
    "y": 151.5
  },
  "cheek_right_5": {
    "x": 117.67,
    "y": 177.31
  },
  "cheek_right_7": {
    "x": 130.68,
    "y": 202.68
  },
  "cheek_right_9": {
    "x": 155.9,
    "y": 224.62
  },
  "cheek_right_11": {
    "x": 183.48,
    "y": 237
  },
  "chin_2": {
    "x": 209.95,
    "y": 239.3
  },
  "cheek_left_11": {
    "x": 235.23,
    "y": 228.95
  },
  "cheek_left_9": {
    "x": 258.09,
    "y": 207.98
  },
  "cheek_left_7": {
    "x": 273.18,
    "y": 182.04
  },
  "cheek_left_5": {
    "x": 278.9,
    "y": 155.82
  },
  "cheek_left_3": {
    "x": 281.37,
    "y": 129.89
  },
  "cheek_left_1": {
    "x": 281.27,
    "y": 104
  },
  "eye_right_corner_right": {
    "x": 126.49,
    "y": 107.15
  },
  "eye_right_eyelid_upper_2": {
    "x": 135.48,
    "y": 99.09
  },
  "eye_right_eyelid_upper_4": {
    "x": 145.41,
    "y": 95.26
  },
  "eye_right_eyelid_upper_6": {
    "x": 156.55,
    "y": 95.97
  },
  "eye_right_corner_left": {
    "x": 167.67,
    "y": 102.29
  },
  "eye_right_eyelid_lower_6": {
    "x": 157.7,
    "y": 105.12
  },
  "eye_right_eyelid_lower_4": {
    "x": 147.3,
    "y": 107.23
  },
  "eye_right_eyelid_lower_2": {
    "x": 136.69,
    "y": 107.99
  },
  "eye_right_eyeball_center": {
    "x": 147.73,
    "y": 101.24
  },
  "eyebrow_right_corner_right": {
    "x": 110.57,
    "y": 89.54
  },
  "eyebrow_right_upper_2": {
    "x": 120.47,
    "y": 73.12
  },
  "eyebrow_right_upper_3": {
    "x": 135.87,
    "y": 65.44
  },
  "eyebrow_right_upper_4": {
    "x": 152.49,
    "y": 62.99
  },
  "eyebrow_right_corner_left": {
    "x": 168.56,
    "y": 71.02
  },
  "eyebrow_right_lower_3": {
    "x": 153.5,
    "y": 73.48
  },
  "eyebrow_right_lower_2": {
    "x": 137.76,
    "y": 75.1
  },
  "eyebrow_right_lower_1": {
    "x": 123.22,
    "y": 80.01
  },
  "eye_left_corner_right": {
    "x": 217.73,
    "y": 96.79
  },
  "eye_left_eyelid_upper_2": {
    "x": 226.52,
    "y": 87.81
  },
  "eye_left_eyelid_upper_4": {
    "x": 236.75,
    "y": 84.47
  },
  "eye_left_eyelid_upper_6": {
    "x": 246.87,
    "y": 85.94
  },
  "eye_left_corner_left": {
    "x": 256.55,
    "y": 92.03
  },
  "eye_left_eyelid_lower_6": {
    "x": 248.11,
    "y": 94.97
  },
  "eye_left_eyelid_lower_4": {
    "x": 238.51,
    "y": 96.62
  },
  "eye_left_eyelid_lower_2": {
    "x": 227.92,
    "y": 97.09
  },
  "eye_left_eyeball_center": {
    "x": 234.6,
    "y": 91.21
  },
  "eyebrow_left_corner_right": {
    "x": 209.77,
    "y": 65.78
  },
  "eyebrow_left_upper_2": {
    "x": 222.84,
    "y": 54.59
  },
  "eyebrow_left_upper_3": {
    "x": 238.19,
    "y": 53.33
  },
  "eyebrow_left_upper_4": {
    "x": 253.34,
    "y": 57.53
  },
  "eyebrow_left_corner_left": {
    "x": 265.02,
    "y": 71.1
  },
  "eyebrow_left_lower_3": {
    "x": 252.29,
    "y": 65.16
  },
  "eyebrow_left_lower_2": {
    "x": 238.71,
    "y": 63.77
  },
  "eyebrow_left_lower_1": {
    "x": 224.35,
    "y": 65.26
  },
  "nose_right_contour_1": {
    "x": 181.9,
    "y": 101.3
  },
  "nose_right_contour_2": {
    "x": 181.22,
    "y": 116.47
  },
  "nose_right_contour_3": {
    "x": 180.7,
    "y": 131.63
  },
  "nose_right_contour_4": {
    "x": 175.99,
    "y": 149.51
  },
  "nose_right_contour_6": {
    "x": 189.48,
    "y": 147.54
  },
  "nose_left_contour_6": {
    "x": 212.47,
    "y": 145.01
  },
  "nose_left_contour_4": {
    "x": 224.05,
    "y": 143.94
  },
  "nose_left_contour_3": {
    "x": 216.34,
    "y": 127.18
  },
  "nose_left_contour_2": {
    "x": 211.14,
    "y": 112.7
  },
  "nose_left_contour_1": {
    "x": 205.92,
    "y": 98.39
  },
  "nose_tip": {
    "x": 200.89,
    "y": 133.62
  },
  "mouth_corner_right_outer": {
    "x": 162.41,
    "y": 181.04
  },
  "mouth_lip_upper_outer_3": {
    "x": 181.13,
    "y": 171.24
  },
  "mouth_lip_upper_outer_6": {
    "x": 202.44,
    "y": 167.4
  },
  "mouth_lip_upper_outer_9": {
    "x": 222.59,
    "y": 166.76
  },
  "mouth_corner_left_outer": {
    "x": 240.34,
    "y": 172.33
  },
  "mouth_lip_lower_outer_9": {
    "x": 224.86,
    "y": 187.02
  },
  "mouth_lip_lower_outer_6": {
    "x": 204.89,
    "y": 193.86
  },
  "mouth_lip_lower_outer_3": {
    "x": 182.58,
    "y": 191.98
  },
  "mouth_lip_upper_inner_3": {
    "x": 182.7,
    "y": 177.96
  },
  "mouth_lip_upper_inner_6": {
    "x": 203.38,
    "y": 176.09
  },
  "mouth_lip_upper_inner_9": {
    "x": 222.51,
    "y": 173.73
  },
  "mouth_lip_lower_inner_9": {
    "x": 221.9,
    "y": 179.01
  },
  "mouth_lip_lower_inner_6": {
    "x": 203.69,
    "y": 182.54
  },
  "mouth_lip_lower_inner_3": {
    "x": 183.96,
    "y": 183.65
  },
  "cheek_right_2": {
    "x": 104.6,
    "y": 138.43
  },
  "cheek_right_4": {
    "x": 112.96,
    "y": 164.49
  },
  "cheek_right_6": {
    "x": 123.26,
    "y": 190.89
  },
  "cheek_right_8": {
    "x": 142.17,
    "y": 214.95
  },
  "cheek_right_10": {
    "x": 169.18,
    "y": 232.05
  },
  "chin_1": {
    "x": 196.41,
    "y": 239.76
  },
  "chin_3": {
    "x": 223.56,
    "y": 235.7
  },
  "cheek_left_10": {
    "x": 247.53,
    "y": 219.37
  },
  "cheek_left_8": {
    "x": 266.71,
    "y": 195.68
  },
  "cheek_left_6": {
    "x": 276.63,
    "y": 169.29
  },
  "cheek_left_4": {
    "x": 280.27,
    "y": 142.91
  },
  "cheek_left_2": {
    "x": 281.37,
    "y": 116.87
  },
  "eyebrow_right_upper_1": {
    "x": 110.33,
    "y": 86.28
  },
  "eyebrow_right_upper_5": {
    "x": 167.9,
    "y": 65.41
  },
  "eyebrow_left_upper_1": {
    "x": 209.28,
    "y": 60.27
  },
  "eyebrow_left_upper_5": {
    "x": 264.85,
    "y": 68.07
  },
  "eye_right_eyelid_upper_1": {
    "x": 130.38,
    "y": 102.52
  },
  "eye_right_eyelid_upper_3": {
    "x": 140.08,
    "y": 96.4
  },
  "eye_right_eyelid_upper_5": {
    "x": 151.2,
    "y": 94.82
  },
  "eye_right_eyelid_upper_7": {
    "x": 162.52,
    "y": 98.42
  },
  "eye_right_eyelid_lower_7": {
    "x": 162.65,
    "y": 103.84
  },
  "eye_right_eyelid_lower_5": {
    "x": 152.66,
    "y": 106.6
  },
  "eye_right_eyelid_lower_3": {
    "x": 142,
    "y": 108.14
  },
  "eye_right_eyelid_lower_1": {
    "x": 131.72,
    "y": 107.84
  },
  "eye_right_eyeball_right": {
    "x": 138.8,
    "y": 103.02
  },
  "eye_right_eyeball_left": {
    "x": 156.44,
    "y": 100.95
  },
  "eye_left_eyelid_upper_1": {
    "x": 221.4,
    "y": 91.57
  },
  "eye_left_eyelid_upper_3": {
    "x": 231.34,
    "y": 85.37
  },
  "eye_left_eyelid_upper_5": {
    "x": 242.07,
    "y": 84.4
  },
  "eye_left_eyelid_upper_7": {
    "x": 252.15,
    "y": 88.32
  },
  "eye_left_eyelid_lower_7": {
    "x": 252.22,
    "y": 93.63
  },
  "eye_left_eyelid_lower_5": {
    "x": 243.5,
    "y": 96.25
  },
  "eye_left_eyelid_lower_3": {
    "x": 233.22,
    "y": 97.32
  },
  "eye_left_eyelid_lower_1": {
    "x": 222.85,
    "y": 97.09
  },
  "eye_left_eyeball_right": {
    "x": 226.11,
    "y": 92.86
  },
  "eye_left_eyeball_left": {
    "x": 243.41,
    "y": 90.77
  },
  "nose_bridge_1": {
    "x": 194.72,
    "y": 99.62
  },
  "nose_bridge_2": {
    "x": 197.27,
    "y": 114.38
  },
  "nose_bridge_3": {
    "x": 199.84,
    "y": 129.18
  },
  "nose_right_contour_5": {
    "x": 184.36,
    "y": 154.78
  },
  "nose_right_contour_7": {
    "x": 187.97,
    "y": 142.32
  },
  "nose_left_contour_7": {
    "x": 212.98,
    "y": 139.24
  },
  "nose_left_contour_5": {
    "x": 217.81,
    "y": 151.08
  },
  "nose_middle_contour": {
    "x": 201.68,
    "y": 154.12
  },
  "mouth_corner_right_inner": {
    "x": 165.3,
    "y": 181
  },
  "mouth_corner_left_inner": {
    "x": 237.92,
    "y": 172.84
  },
  "mouth_lip_upper_outer_1": {
    "x": 168.01,
    "y": 176.99
  },
  "mouth_lip_upper_outer_2": {
    "x": 174.3,
    "y": 173.78
  },
  "mouth_lip_upper_outer_4": {
    "x": 187.89,
    "y": 168.51
  },
  "mouth_lip_upper_outer_5": {
    "x": 194.93,
    "y": 167.13
  },
  "mouth_lip_upper_outer_7": {
    "x": 209.22,
    "y": 165.76
  },
  "mouth_lip_upper_outer_8": {
    "x": 215.94,
    "y": 165.52
  },
  "mouth_lip_upper_outer_10": {
    "x": 229.05,
    "y": 167.86
  },
  "mouth_lip_upper_outer_11": {
    "x": 234.91,
    "y": 169.69
  },
  "mouth_lip_lower_outer_11": {
    "x": 235.77,
    "y": 177.88
  },
  "mouth_lip_lower_outer_10": {
    "x": 230.91,
    "y": 182.95
  },
  "mouth_lip_lower_outer_8": {
    "x": 218.84,
    "y": 190.53
  },
  "mouth_lip_lower_outer_7": {
    "x": 212.21,
    "y": 192.9
  },
  "mouth_lip_lower_outer_5": {
    "x": 197.36,
    "y": 194.88
  },
  "mouth_lip_lower_outer_4": {
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Sample Code

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• Sample Code