Skip to content

Associate Faces

rekognition_associate_faces R Documentation

Associates one or more faces with an existing UserID

Description

Associates one or more faces with an existing UserID. Takes an array of FaceIds. Each FaceId that are present in the FaceIds list is associated with the provided UserID. The maximum number of total FaceIds per UserID is 100.

The UserMatchThreshold parameter specifies the minimum user match confidence required for the face to be associated with a UserID that has at least one FaceID already associated. This ensures that the FaceIds are associated with the right UserID. The value ranges from 0-100 and default value is 75.

If successful, an array of AssociatedFace objects containing the associated FaceIds is returned. If a given face is already associated with the given UserID, it will be ignored and will not be returned in the response. If a given face is already associated to a different UserID, isn't found in the collection, doesn’t meet the UserMatchThreshold, or there are already 100 faces associated with the UserID, it will be returned as part of an array of UnsuccessfulFaceAssociations.

The UserStatus reflects the status of an operation which updates a UserID representation with a list of given faces. The UserStatus can be:

  • ACTIVE - All associations or disassociations of FaceID(s) for a UserID are complete.

  • CREATED - A UserID has been created, but has no FaceID(s) associated with it.

  • UPDATING - A UserID is being updated and there are current associations or disassociations of FaceID(s) taking place.

Usage

rekognition_associate_faces(CollectionId, UserId, FaceIds,
  UserMatchThreshold, ClientRequestToken)

Arguments

CollectionId

[required] The ID of an existing collection containing the UserID.

UserId

[required] The ID for the existing UserID.

FaceIds

[required] An array of FaceIDs to associate with the UserID.

UserMatchThreshold

An optional value specifying the minimum confidence in the UserID match to return. The default value is 75.

ClientRequestToken

Idempotent token used to identify the request to associate_faces. If you use the same token with multiple associate_faces requests, the same response is returned. Use ClientRequestToken to prevent the same request from being processed more than once.

Value

A list with the following syntax: 

list(
  AssociatedFaces = list(
    list(
      FaceId = "string"
    )
  ),
  UnsuccessfulFaceAssociations = list(
    list(
      FaceId = "string",
      UserId = "string",
      Confidence = 123.0,
      Reasons = list(
        "FACE_NOT_FOUND"|"ASSOCIATED_TO_A_DIFFERENT_USER"|"LOW_MATCH_CONFIDENCE"
      )
    )
  ),
  UserStatus = "ACTIVE"|"UPDATING"|"CREATING"|"CREATED"
)

Request syntax

svc$associate_faces(
  CollectionId = "string",
  UserId = "string",
  FaceIds = list(
    "string"
  ),
  UserMatchThreshold = 123.0,
  ClientRequestToken = "string"
)

Examples

## Not run: 
# This operation associates one or more faces with an existing UserID.
svc$associate_faces(
  ClientRequestToken = "550e8400-e29b-41d4-a716-446655440002",
  CollectionId = "MyCollection",
  FaceIds = list(
    "f5817d37-94f6-4335-bfee-6cf79a3d806e",
    "851cb847-dccc-4fea-9309-9f4805967855",
    "35ebbb41-7f67-4263-908d-dd0ecba05ab9"
  ),
  UserId = "DemoUser",
  UserMatchThreshold = 70L
)

## End(Not run)