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AnalyzeFace

Last updated: 2023-02-27 15:22:51

1. API Description

Domain name for API request: iai.tencentcloudapi.com.

This API is used to perform facial feature localization (aka facial keypoint localization) on a given image and calculate 90 facial keypoints that make up the contour of the face, including eyebrows (8 points on the left and 8 on the right), eyes (8 points on the left and 8 on the right), nose (13 points), mouth (22 points), face contour (21 points), and eyeballs or pupils (2 points).

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common Params. The value used for this API: AnalyzeFace.
Version Yes String Common Params. The value used for this API: 2020-03-03.
Region No String Common Params. This parameter is not required for this API.
Mode No Integer Detection mode. 0: detect all faces that appear; 1: detect the largest face. Default value: 0. The facial feature localization information (facial keypoints) of up to 10 faces can be returned.
Image No String Base64-encoded image data, which cannot exceed 5 MB.
The long side cannot exceed 4,000 px for images in JPG format or 2,000 px for images in other formats.
PNG, JPG, JPEG, and BMP images are supported, while GIF images are not.
Url No String Image URL. The image cannot exceed 5 MB in size after being Base64-encoded.
The long side cannot exceed 4,000 px for images in JPG format or 2,000 px for images in other formats.
Either Url or Image must be provided; if both are provided, only Url will be used.
We recommend storing the image in Tencent Cloud, as a Tencent Cloud URL can guarantee higher download speed and stability.
The download speed and stability of non-Tencent Cloud URLs may be low.
PNG, JPG, JPEG, and BMP images are supported, while GIF images are not.
FaceModelVersion No String Algorithm model version used by the Face Recognition service.

Currently, 2.0 and 3.0 are supported.

This parameter is 3.0 by default starting from April 2, 2020. If it is left empty for accounts that used this API, 2.0 will be used by default.

The parameter can be set only to 3.0 for accounts that purchase the service after November 26, 2020.

Different algorithm model versions correspond to different face recognition algorithms. The 3.0 version has a better overall effect than the legacy version and is recommended.
NeedRotateDetection No Integer Whether to enable the support for rotated image recognition. 0: no; 1: yes. Default value: 0. When the face in the image is rotated and the image has no EXIF information, if this parameter is not enabled, the face in the image cannot be correctly detected and recognized. If you are sure that the input image contains EXIF information or the face in the image will not be rotated, do not enable this parameter, as the overall time consumption may increase by hundreds of milliseconds after it is enabled.

3. Output Parameters

Parameter Name Type Description
ImageWidth Integer Width of requested image.
ImageHeight Integer Height of requested image.
FaceShapeSet Array of FaceShape Specific information of facial feature localization (facial keypoints).
FaceModelVersion String Algorithm model version used for face recognition.
RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

4. Example

Example1 Performing facial feature localization

Input Example

https://iai.tencentcloudapi.com/?Action=AnalyzeFace
&Mode=0
&Url=http://test.image.myqcloud.com/testA.jpg
&<Common request parameters>

Output Example

{
    "Response": {
        "ImageWidth": 550,
        "ImageHeight": 366,
        "FaceShapeSet":[
            {
                "FaceProfile": [
                    {
                        "X": 63,
                        "Y": 335
                    },
                    {
                        "X": 63,
                        "Y": 374
                    },
                    {
                        0"X": 66,
                        "Y": 412
                    },
                    {
                        "X": 74,
                        "Y": 450
                    },
                    {
                        "X": 85,
                        "Y": 487
                    },
                    {
                        "X": 100,
                        "Y": 522
                    },
                    {
                        "X": 121,
                        "Y": 554
                    },
                    {
                        "X": 147,
                        "Y": 582
                    },
                    {
                        "X": 176,
                        "Y": 608
                    },
                    {
                        "X": 208,
                        "Y": 627
                    },
                    {
                        "X": 245,
                        "Y": 634
                    },
                    {
                        "X": 282,
                        "Y": 627
                    },
                    {
                        "X": 315,
                        "Y": 607
                    },
                    {
                        "X": 344,
                        "Y": 582
                    },
                    {
                        "X": 370,
                        "Y": 554
                    },
                    {
                        "X": 391,
                        "Y": 522
                    },
                    {
                        "X": 405,
                        "Y": 487
                    },
                    {
                        "X": 416,
                        "Y": 449
                    },
                    {
                        "X": 423,
                        "Y": 411
                    },
                    {
                        "X": 427,
                        "Y": 372
                    },
                    {
                        "X": 426,
                        "Y": 334
                    }
                ],
                "LeftEye": [
                    {
                        "X": 114,
                        "Y": 333
                    },
                    {
                        "X": 128,
                        "Y": 345
                    },
                    {
                        "X": 146,
                        "Y": 349
                    },
                    {
                        "X": 165,
                        "Y": 347
                    },
                    {
                        "X": 183,
                        "Y": 341
                    },
                    {
                        "X": 169,
                        "Y": 325
                    },
                    {
                        "X": 150,
                        "Y": 318
                    },
                    {
                        "X": 130,
                        "Y": 321
                    }
                ],
                "RightEye": [
                    {
                        "X": 378,
                        "Y": 331
                    },
                    {
                        "X": 364,
                        "Y": 343
                    },
                    {
                        "X": 345,
                        "Y": 348
                    },
                    {
                        "X": 327,
                        "Y": 346
                    },
                    {
                        "X": 309,
                        "Y": 340
                    },
                    {
                        "X": 322,
                        "Y": 323
                    },
                    {
                        "X": 341,
                        "Y": 316
                    },
                    {
                        "X": 361,
                        "Y": 319
                    }
                ],
                "LeftEyeBrow": [
                    {
                        "X": 79,
                        "Y": 280
                    },
                    {
                        "X": 108,
                        "Y": 275
                    },
                    {
                        "X": 138,
                        "Y": 274
                    },
                    {
                        "X": 168,
                        "Y": 277
                    },
                    {
                        "X": 198,
                        "Y": 279
                    },
                    {
                        "X": 173,
                        "Y": 256
                    },
                    {
                        "X": 139,
                        "Y": 251
                    },
                    {
                        "X": 105,
                        "Y": 256
                    }
                ],
                "RightEyeBrow": [
                    {
                        "X": 410,
                        "Y": 277
                    },
                    {
                        "X": 380,
                        "Y": 273
                    },
                    {
                        "X": 350,
                        "Y": 272
                    },
                    {
                        "X": 320,
                        "Y": 275
                    },
                    {
                        "X": 290,
                        "Y": 277
                    },
                    {
                        "X": 315,
                        "Y": 255
                    },
                    {
                        "X": 349,
                        "Y": 249
                    },
                    {
                        "X": 384,
                        "Y": 254
                    }
                ],
                "Mouth": [
                    {
                        "X": 173,
                        "Y": 522
                    },
                    {
                        "X": 193,
                        "Y": 541
                    },
                    {
                        "X": 217,
                        "Y": 554
                    },
                    {
                        "X": 244,
                        "Y": 558
                    },
                    {
                        "X": 272,
                        "Y": 554
                    },
                    {
                        "X": 297,
                        "Y": 541
                    },
                    {
                        "X": 317,
                        "Y": 522
                    },
                    {
                        "X": 291,
                        "Y": 517
                    },
                    {
                        "X": 264,
                        "Y": 512
                    },
                    {
                        "X": 245,
                        "Y": 517
                    },
                    {
                        "X": 225,
                        "Y": 512
                    },
                    {
                        "X": 199,
                        "Y": 517
                    },
                    {
                        "X": 196,
                        "Y": 528
                    },
                    {
                        "X": 220,
                        "Y": 532
                    },
                    {
                        "X": 244,
                        "Y": 535
                    },
                    {
                        "X": 269,
                        "Y": 532
                    },
                    {
                        "X": 293,
                        "Y": 528
                    },
                    {
                        "X": 293,
                        "Y": 525
                    },
                    {
                        "X": 269,
                        "Y": 527
                    },
                    {
                        "X": 245,
                        "Y": 530
                    },
                    {
                        "X": 221,
                        "Y": 528
                    },
                    {
                        "X": 197,
                        "Y": 525
                    }
                ],
                "Nose": [
                    {
                        "X": 244,
                        "Y": 428
                    },
                    {
                        "X": 245,
                        "Y": 341
                    },
                    {
                        "X": 231,
                        "Y": 367
                    },
                    {
                        "X": 217,
                        "Y": 392
                    },
                    {
                        "X": 203,
                        "Y": 418
                    },
                    {
                        "X": 187,
                        "Y": 448
                    },
                    {
                        "X": 217,
                        "Y": 464
                    },
                    {
                        "X": 245,
                        "Y": 468
                    },
                    {
                        "X": 272,
                        "Y": 464
                    },
                    {
                        "X": 302,
                        "Y": 448
                    },
                    {
                        "X": 287,
                        "Y": 417
                    },
                    {
                        "X": 273,
                        "Y": 392
                    },
                    {
                        "X": 259,
                        "Y": 366
                    }
                ],
                "LeftPupil": [
                    {
                        "X": 188,
                        "Y": 303
                    }
                ],
                "RightPupil": [
                    {
                        "X": 201,
                        "Y": 304
                    }
                ]
            }
        ],
        "FaceModelVersion": "3.0",
        "RequestId": "a8eb4545-a154-4f86-9510-57a8be9cae0c"
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code Description
AuthFailure.InvalidAuthorization Authentication failed.
FailedOperation.ConflictOperation The operations conflict. Do not operate on the same person simultaneously.
FailedOperation.DuplicatedGroupDescription The custom description field must be unique in the group.
FailedOperation.FaceSizeTooSmall The face frame size is smaller than the MinFaceSize value, and the face is filtered out.
FailedOperation.GroupInDeletedState The current group is being deleted. Please wait.
FailedOperation.GroupPersonMapExist The ID of the corresponding person is already in the group.
FailedOperation.GroupPersonMapNotExist The ID of the corresponding person is not in the group.
FailedOperation.ImageDecodeFailed Image decoding failed.
FailedOperation.ImageDownloadError An error occurred while downloading the image.
FailedOperation.ImageFacedetectFailed Face detection failed.
FailedOperation.ImageResolutionExceed The image resolution is too high.
FailedOperation.ImageResolutionTooSmall The image short edge resolution is smaller than 64.
FailedOperation.ImageSizeExceed The size of the Base64-encoded image cannot exceed 5 MB.
FailedOperation.RequestTimeout The backend service timed out.
FailedOperation.SearchFacesExceed The number of faces searched for exceeds the limit.
FailedOperation.ServerError The algorithm service is exceptional. Please retry.
FailedOperation.UnKnowError An internal error occurred.
InternalError Internal error.
InvalidParameter.InvalidParameter Invalid parameter.
InvalidParameterValue.AccountFaceNumExceed The number of faces in the account exceeds the limit.
InvalidParameterValue.DeleteFaceNumExceed The number of faces to be deleted exceeds the limit. Every person must have at least one face image.
InvalidParameterValue.FaceModelVersionIllegal The algorithm model version is invalid.
InvalidParameterValue.GroupExDescriptionsExceed The array length of the group's custom description fields exceeds the limit. Up to 5 fields can be created.
InvalidParameterValue.GroupExDescriptionsNameIdentical The name of the group's custom description field must be unique.
InvalidParameterValue.GroupExDescriptionsNameIllegal The name of the group's custom description field contains invalid characters. It can contain only letters, -, _, and digits.
InvalidParameterValue.GroupExDescriptionsNameTooLong The name of the group's custom description field exceeds the length limit.
InvalidParameterValue.GroupFaceNumExceed The number of faces in the group exceeds the limit.
InvalidParameterValue.GroupIdAlreadyExist The group ID already exists. It must be unique.
InvalidParameterValue.GroupIdIllegal The group ID contains invalid characters. It can contain only letters, digits, and special symbols (-%@#&_).
InvalidParameterValue.GroupIdNotExist The group ID does not exist.
InvalidParameterValue.GroupIdTooLong The group ID exceeds the length limit.
InvalidParameterValue.GroupIdsExceed The list of groups passed in exceeds the limit.
InvalidParameterValue.GroupNameAlreadyExist The group name already exists. It must be unique.
InvalidParameterValue.GroupNameIllegal The group name contains invalid characters. It can contain only letters, -, _, and digits.
InvalidParameterValue.GroupNameTooLong The group name exceeds the length limit.
InvalidParameterValue.GroupNumExceed The number of groups exceeds the limit. If you need more, please contact us.
InvalidParameterValue.GroupNumPerPersonExceed The number of groups exceeds the limit. One person can be added to up to 100 groups.
InvalidParameterValue.GroupTagIllegal The group remarks field contains invalid characters. It can contain only letters, -, _, and digits.
InvalidParameterValue.GroupTagTooLong The group remarks field exceeds the length limit.
InvalidParameterValue.ImageEmpty Empty image.
InvalidParameterValue.LimitExceed The number of returned results exceeds the limit.
InvalidParameterValue.NoFaceInGroups There are no faces in the specified group.
InvalidParameterValue.NoFaceInPhoto There are no faces in the image.
InvalidParameterValue.OffsetExceed The starting number is too large. Please check the length of the array to be requested.
InvalidParameterValue.PersonExDescriptionInfosExceed The array length of the person's custom description fields exceeds the limit. Up to 5 fields are allowed.
InvalidParameterValue.PersonExDescriptionsNameIdentical The name of the person's custom description field must be unique.
InvalidParameterValue.PersonExDescriptionsNameIllegal The name of the person's custom description field contains invalid characters. It can contain only letters, -, _, and digits.
InvalidParameterValue.PersonExDescriptionsNameTooLong The name of the person's custom description field exceeds the length limit.
InvalidParameterValue.PersonExistInGroup The ID of the corresponding person is already in the group.
InvalidParameterValue.PersonFaceNumExceed The number of face images for the person exceeds the limit. One person can have up to 5 face images.
InvalidParameterValue.PersonGenderIllegal An error occurred while setting person gender. 0: empty; 1: male; 2: female.
InvalidParameterValue.PersonIdAlreadyExist The person ID already exists. It must be unique.
InvalidParameterValue.PersonIdIllegal The person ID contains invalid characters. It can contain only letters, digits, and -%@#&_.
InvalidParameterValue.PersonIdNotExist The person ID does not exist.
InvalidParameterValue.PersonIdTooLong The person ID field exceeds the length limit.
InvalidParameterValue.PersonNameIllegal The person name contains invalid characters. It can contain only letters, -, _, and digits.
InvalidParameterValue.PersonNameTooLong The person name exceeds the length limit.
InvalidParameterValue.SearchPersonsExceed The number of persons searched for exceeds the limit.
InvalidParameterValue.UploadFaceNumExceed Up to four faces can be uploaded at a time.
InvalidParameterValue.UrlIllegal Invalid URL format.
LimitExceeded.ErrorFaceNumExceed The number of faces exceeds the limit.
MissingParameter.ErrorParameterEmpty A required parameter is empty.
ResourceUnavailable.Delivering The resource is being shipped.
ResourceUnavailable.Freeze The account is frozen.
ResourceUnavailable.InArrears The account is in arrears.
ResourceUnavailable.NotExist The billing status is unknown. Please check whether the service has been activated in the console.
ResourceUnavailable.Recover The resource has been repossessed.
ResourceUnavailable.StopUsing The service has been suspended for the account.
ResourceUnavailable.UnknownStatus The billing status is unknown.
ResourcesSoldOut.ChargeStatusException The billing status is exceptional.
UnsupportedOperation.UnknowMethod Unknown method name.
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