从集合中删除人脸

您可以使用该DeleteFaces操作从集合中删除人脸。有关更多信息，请参阅 管理集合中的人脸。

从集合中删除人脸

1. 如果您尚未执行以下操作，请：

   1. 使用 AmazonRekognitionFullAccess 权限创建或更新用户。有关更多信息，请参阅 步骤 1：设置 AWS 账户并创建用户。

   2. 安装和配置 AWS CLI 和 AWS SDK。有关更多信息，请参阅 第 2 步：设置 AWS CLI 和 AWS 软件开发工具包。

2. 使用以下示例调用 DeleteFaces 操作。

   Java

   此示例从集合中删除单个人脸。

   将 collectionId 的值更改为包含您要删除的人脸的集合。将 faces 的值更改为您要删除的人脸的 ID。要删除多个人脸，请将人脸 ID 添加至 faces 数组。

   //Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   //PDX-License-Identifier: MIT-0 (For details, see https://github.com/awsdocs/amazon-rekognition-developer-guide/blob/master/LICENSE-SAMPLECODE.)
   
   package aws.example.rekognition.image;
   import com.amazonaws.services.rekognition.AmazonRekognition;
   import com.amazonaws.services.rekognition.AmazonRekognitionClientBuilder;
   import com.amazonaws.services.rekognition.model.DeleteFacesRequest;
   import com.amazonaws.services.rekognition.model.DeleteFacesResult;
   
   import java.util.List;
   
   
   public class DeleteFacesFromCollection {
      public static final String collectionId = "MyCollection";
      public static final String faces[] = {"xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"};
   
      public static void main(String[] args) throws Exception {
         
         AmazonRekognition rekognitionClient = AmazonRekognitionClientBuilder.defaultClient();
        
         
         DeleteFacesRequest deleteFacesRequest = new DeleteFacesRequest()
                 .withCollectionId(collectionId)
                 .withFaceIds(faces);
        
         DeleteFacesResult deleteFacesResult=rekognitionClient.deleteFaces(deleteFacesRequest);
         
        
         List < String > faceRecords = deleteFacesResult.getDeletedFaces();
         System.out.println(Integer.toString(faceRecords.size()) + " face(s) deleted:");
         for (String face: faceRecords) {
            System.out.println("FaceID: " + face);
         }
      }
   }
         
       
   
       
   
   
   

   Java V2

   此代码取自 AWS 文档 SDK 示例 GitHub 存储库。请在此处查看完整示例。

   import software.amazon.awssdk.auth.credentials.ProfileCredentialsProvider;
   import software.amazon.awssdk.regions.Region;
   import software.amazon.awssdk.services.rekognition.RekognitionClient;
   import software.amazon.awssdk.services.rekognition.model.DeleteFacesRequest;
   import software.amazon.awssdk.services.rekognition.model.RekognitionException;
   // snippet-end:[rekognition.java2.delete_faces_collection.import]
   
   /**
    * Before running this Java V2 code example, set up your development environment, including your credentials.
    *
    * For more information, see the following documentation topic:
    *
    * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
    */
   public class DeleteFacesFromCollection {
       public static void main(String[] args) {
   
           final String usage = "\n" +
               "Usage: " +
               "   <collectionId> <faceId> \n\n" +
               "Where:\n" +
               "   collectionId - The id of the collection from which faces are deleted. \n\n" +
               "   faceId - The id of the face to delete. \n\n";
   
           if (args.length != 1) {
               System.out.println(usage);
               System.exit(1);
           }
   
           String collectionId = args[0];
           String faceId = args[1];
           Region region = Region.US_EAST_1;
           RekognitionClient rekClient = RekognitionClient.builder()
               .region(region)
               .credentialsProvider(ProfileCredentialsProvider.create("profile-name"))
               .build();
   
           System.out.println("Deleting collection: " + collectionId);
           deleteFacesCollection(rekClient, collectionId, faceId);
           rekClient.close();
       }
   
       // snippet-start:[rekognition.java2.delete_faces_collection.main]
       public static void deleteFacesCollection(RekognitionClient rekClient,
                                                String collectionId,
                                                String faceId) {
   
           try {
               DeleteFacesRequest deleteFacesRequest = DeleteFacesRequest.builder()
                   .collectionId(collectionId)
                   .faceIds(faceId)
                   .build();
   
               rekClient.deleteFaces(deleteFacesRequest);
               System.out.println("The face was deleted from the collection.");
   
           } catch(RekognitionException e) {
               System.out.println(e.getMessage());
               System.exit(1);
           }
       }
       // snippet-end:[rekognition.java2.delete_faces_collection.main]
   }

   AWS CLI

   此 AWS CLI 命令显示 delete-faces CLI 操作的 JSON 输出。将 collection-id 的值替换为您要删除的人脸所在集合的名称。将 face-ids 的值替换为您要删除的一组人脸 ID。将创建 Rekognition 会话的行中的profile_name值替换为您的开发人员资料的名称。

   aws rekognition delete-faces --collection-id "collection-id" --face-ids "faceid" --profile profile-name

   Python

   此示例从集合中删除单个人脸。

   将 collectionId 的值更改为包含您要删除的人脸的集合。将 faces 的值更改为您要删除的人脸的 ID。要删除多个人脸，请将人脸 ID 添加至 faces 数组。将创建 Rekognition 会话的行中的profile_name值替换为您的开发人员资料的名称。

   # Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   # PDX-License-Identifier: MIT-0 (For details, see https://github.com/awsdocs/amazon-rekognition-developer-guide/blob/master/LICENSE-SAMPLECODE.)
   
   import boto3
   
   def delete_faces_from_collection(collection_id, faces):
   
       session = boto3.Session(profile_name='profile-name')
       client = session.client('rekognition')
       response = client.delete_faces(CollectionId=collection_id,
                                      FaceIds=faces)
   
       print(str(len(response['DeletedFaces'])) + ' faces deleted:')
       for faceId in response['DeletedFaces']:
           print(faceId)
       return len(response['DeletedFaces'])
   
   
   def main():
       collection_id = 'collection-id'
       faces = []
       faces.append("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx")
   
       faces_count = delete_faces_from_collection(collection_id, faces)
       print("deleted faces count: " + str(faces_count))
   
   if __name__ == "__main__":
       main()

   .NET

   此示例从集合中删除单个人脸。

   将 collectionId 的值更改为包含您要删除的人脸的集合。将 faces 的值更改为您要删除的人脸的 ID。要删除多个人脸，请将人脸 ID 添加至 faces 列表。

   //Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   //PDX-License-Identifier: MIT-0 (For details, see https://github.com/awsdocs/amazon-rekognition-developer-guide/blob/master/LICENSE-SAMPLECODE.)
   
   using System;
   using System.Collections.Generic;
   using Amazon.Rekognition;
   using Amazon.Rekognition.Model;
   
   public class DeleteFaces
   {
       public static void Example()
       {
           String collectionId = "MyCollection";
           List<String> faces = new List<String>() { "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" };
   
           AmazonRekognitionClient rekognitionClient = new AmazonRekognitionClient();
   
           DeleteFacesRequest deleteFacesRequest = new DeleteFacesRequest()
           {
               CollectionId = collectionId,
               FaceIds = faces
           };
   
           DeleteFacesResponse deleteFacesResponse = rekognitionClient.DeleteFaces(deleteFacesRequest);
           foreach (String face in deleteFacesResponse.DeletedFaces)
               Console.WriteLine("FaceID: " + face);
       }
   }
   

DeleteFaces 操作请求

DeleteFaces 的输入是要删除的人脸以及相应的一组人脸 ID 所在集合的 ID。

{
    "CollectionId": "MyCollection",
    "FaceIds": [
        "daf29cac-f910-41e9-851f-6eeb0e08f973"
    ]
}

DeleteFaces 操作响应

DeleteFaces 响应包含已删除的人脸的一组人脸 ID。

{
    "DeletedFaces": [
        "daf29cac-f910-41e9-851f-6eeb0e08f973"
    ]
}

如果输入中提供的面容 ID 当前与用户关联，则将以正当理由将其作为一部分 UnsuccessfulFaceDeletions 返回。

{
   "DeletedFaces": [
        "daf29cac-f910-41e9-851f-6eeb0e08f973"
    ],
     "UnsuccessfulFaceDeletions" : [
        {
           "FaceId" : "0b683aed-a0f1-48b2-9b5e-139e9cc2a757",
           "UserId" : "demoUser1",
           "Reason" : ["ASSOCIATED_TO_AN_EXISTING_USER"]
        }
     ]
}