本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# 取消使用者人臉的關聯
<a name="disassociate-faces"></a>

您可以使用 [DisassociateFaces](https://docs.aws.amazon.com/rekognition/latest/APIReference/API_DisassociateFaces.html) 操作來移除使用者 ID 與人臉 ID 之間的關聯。

**取消人臉的關聯 (SDK)**

1. 如果您尚未執行：

   1. 建立或更新具有 `AmazonRekognitionFullAccess` 許可的使用者。如需詳細資訊，請參閱[步驟 1：設定 AWS 帳戶並建立使用者](setting-up.md#setting-up-iam)。

   1. 安裝和設定 AWS CLI 和 AWS SDKs。如需詳細資訊，請參閱[步驟 2：設定 AWS CLI 和 AWS SDKs](setup-awscli-sdk.md)。

1. 使用下列範例來呼叫 `DisassociateFaces` 操作。

------
#### [ Java ]

   此 Java 範例會移除 FaceID 和 UserID 與 `DisassociateFaces` 操作之間的關聯。

   ```
   import java.util.Arrays;
   import java.util.List;
   
   import com.amazonaws.services.rekognition.AmazonRekognition;
   import com.amazonaws.services.rekognition.AmazonRekognitionClientBuilder;
   import com.amazonaws.services.rekognition.model.DisassociateFacesRequest;
   import com.amazonaws.services.rekognition.model.DisassociateFacesResult;
   
   
   public class DisassociateFaces {
   
       public static void main(String[] args) throws Exception {
   
   
           AmazonRekognition rekognitionClient = AmazonRekognitionClientBuilder.defaultClient();
   
           /* Replace the below configurations to allow you successfully run the example
   
              @collectionId: The collection where user and faces are stored
              @userId: The user which faces will get disassociated from
              @faceIds: The list of face IDs that will get disassociated from the given user
            */
   
           String collectionId = "MyCollection";
           String userId = "demoUser";
           String faceId1 = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
           String faceId2 = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
           List<String> faceIds = Arrays.asList(faceid1,faceid2);
   
           System.out.println("Disassociating faces from existing user: " +
                   userId);
   
           DisassociateFacesRequest request = new DisassociateFacesRequest()
                   .withCollectionId(collectionId)
                   .withUserId(userId)
                   .withFaceIds(faceIds)
   
           DisassociateFacesResult result = rekognitionClient.disassociateFaces(request);
   
           System.out.println("Successful face disassociations: " + result.getDisassociatedFaces().size());
           System.out.println("Unsuccessful face disassociations: " + result.getUnsuccessfulFaceDisassociations().size());
       }
   
   }
   ```

------
#### [ AWS CLI ]

   此 AWS CLI 命令會移除 FaceID 與 UserID 與 `DisassociateFaces`操作之間的關聯。

   ```
   aws rekognition disassociate-faces --face-ids {{list-of-face-ids}}
   --user-id {{user-id}} --collection-id {{collection-name}} --region {{region-name}}
   ```

------
#### [ Python ]

   下列範例會移除 FaceID 和 UserID 與 `DisassociateFaces` 操作之間的關聯。

   ```
   from botocore.exceptions import ClientError
   import boto3
   import logging
   
   logger = logging.getLogger(__name__)
   session = boto3.Session(profile_name='profile-name')
   client = session.client('rekognition')
   
   def disassociate_faces(collection_id, user_id, face_ids):
       """
       Disassociate stored faces within collection to the given user
   
       :param collection_id: The ID of the collection where user and faces are stored.
       :param user_id: The ID of the user that we want to disassociate faces from
       :param face_ids: The list of face IDs to be disassociated from the given user
   
       :return: response of AssociateFaces API
       """
       logger.info(f'Disssociating faces from user: {user_id}, {face_ids}')
       try:
           response = client.disassociate_faces(
               CollectionId=collection_id,
               UserId=user_id,
               FaceIds=face_ids
           )
           print(f'- disassociated {len(response["DisassociatedFaces"])} faces')
       except ClientError:
           logger.exception("Failed to disassociate faces from the given user")
           raise
       else:
           print(response)
           return response
   
   def main():
       face_ids = ["faceId1", "faceId2"]
       collection_id = "collection-id"
       user_id = "user-id"
       disassociate_faces(collection_id, user_id, face_ids)
   
   if __name__ == "__main__":
       main()
   ```

------

## DisassociateFaces 操作回應
<a name="disassociate-faces-response"></a>

`DisassociateFaces` 的回應包括 `UserStatus`，也就是解除關聯要求的狀態，以及要取消關聯 `FaceIds` 的清單。也會傳回 `UnsuccessfulFaceDisassociations` 的清單。提交 DisassociateFaces 請求後，該操作可能需要一分鐘左右的時間才能完成。基於這個原因，UserStatus 會傳回，取值如下：
+ 已建立：表示「使用者」已成功建立，且目前沒有與其相關聯的任何人臉。在「AssociateFaces」的任何成功呼叫之前，「使用者」將處於此狀態。
+ 更新：表示「使用者」正在更新以反映新關聯/取消關聯的人臉，並在幾秒鐘內變為作用中狀態。此狀態下的搜尋結果可能包含「使用者」，客戶可以選擇從傳回的結果中忽略這些結果。
+ 作用中：表示****「使用者」****已更新，以反映所有關聯/已取消關聯的人臉，且處於可搜尋狀態。

```
{
    "UserStatus": "UPDATING", 
    "DisassociatedFaces": [
        {
            "FaceId": "c92265d4-5f9c-43af-a58e-12be0ce02bc3"
        }
    ], 
    "UnsuccessfulFaceDisassociations": [
        {
            "Reasons": [
                "ASSOCIATED_TO_A_DIFFERENT_IDENTITY"
            ], 
            "FaceId": "f5817d37-94f6-4335-bfee-6cf79a3d806e", 
            "UserId": "demoUser1"
        }
    ]
}
```