Face Recognition Operations - Verify Face To Face

Service:

Azure AI Services

API Version:

v1.2-preview.1

Verify whether two faces belong to a same person.

Note

• • Higher face image quality means better identification precision. Please consider high-quality faces: frontal, clear, and face size is 200x200 pixels (100 pixels between eyes) or bigger.
  • For the scenarios that are sensitive to accuracy please make your own judgment.
  • The 'recognitionModel' associated with the both faces should be the same.

POST {endpoint}/face/{apiVersion}/verify

URI Parameters

Name	In	Required	Type	Description
apiVersion	path	True	string	API Version
endpoint	path	True	string uri	Supported Cognitive Services endpoints (protocol and hostname, for example: https://{resource-name}.cognitiveservices.azure.com).

Request Body

Name	Required	Type	Description
faceId1	True	string	The faceId of one face, come from "Detect".
faceId2	True	string	The faceId of another face, come from "Detect".

Responses

Name	Type	Description
200 OK	VerificationResult	A successful call returns the verification result.
Other Status Codes	FaceErrorResponse	An unexpected error response. Headers x-ms-error-code: string

Security

Ocp-Apim-Subscription-Key

The secret key for your Azure AI Face subscription.

Type: apiKey
In: header

AADToken

The Azure Active Directory OAuth2 Flow

Type: oauth2
Flow: accessCode
Authorization URL: https://api.example.com/oauth2/authorize
Token URL: https://api.example.com/oauth2/token

Scopes

Name	Description
https://cognitiveservices.azure.com/.default

Examples

Verify Face to Face

Sample request

HTTP

POST {endpoint}/face/v1.2-preview.1/verify

{
  "faceId1": "c5c24a82-6845-4031-9d5d-978df9175426",
  "faceId2": "3aa87e30-b380-48eb-ad9e-1aa54fc52bd3"
}

Sample response

Status code:

200

{
  "isIdentical": true,
  "confidence": 0.8
}

Definitions

Name	Description
FaceError	The error object. For comprehensive details on error codes and messages returned by the Face Service, please refer to the following link: https://aka.ms/face-error-codes-and-messages.
FaceErrorResponse	A response containing error details.
VerificationResult	Verify result.

FaceError

The error object. For comprehensive details on error codes and messages returned by the Face Service, please refer to the following link: https://aka.ms/face-error-codes-and-messages.

Name	Type	Description
code	string	One of a server-defined set of error codes.
message	string	A human-readable representation of the error.

FaceErrorResponse

A response containing error details.

Name	Type	Description
error	FaceError	The error object.

VerificationResult

Verify result.

Name	Type	Description
confidence	number	A number indicates the similarity confidence of whether two faces belong to the same person, or whether the face belongs to the person. By default, isIdentical is set to True if similarity confidence is greater than or equal to 0.5. This is useful for advanced users to override 'isIdentical' and fine-tune the result on their own data.
isIdentical	boolean	True if the two faces belong to the same person or the face belongs to the person, otherwise false.