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# Menghapus wajah dari koleksi
Anda dapat menggunakan operasi [DeleteFaces](https://docs.aws.amazon.com/rekognition/latest/APIReference/API_DeleteFaces.html) untuk menghapus wajah dari koleksi. Untuk informasi selengkapnya, lihat [Mengelola wajah dalam koleksi](managing-face-collections.md#collections-index-faces).
**Menghapus wajah dari koleksi**
1. Jika belum:
1. Buat atau perbarui pengguna dengan `AmazonRekognitionFullAccess` izin. Untuk informasi selengkapnya, lihat [Langkah 1: Siapkan akun AWS dan buat Pengguna](setting-up.md#setting-up-iam).
1. Instal dan konfigurasikan AWS CLI dan AWS SDKs. Untuk informasi selengkapnya, lihat [Langkah 2: Mengatur AWS CLI dan AWS SDKs](setup-awscli-sdk.md).
1. Gunakan contoh berikut untuk memanggil operasi `DeleteFaces`.
------
#### [ Java ]
Contoh ini menghapus satu wajah dari koleksi.
Ubah nilai `collectionId` menjadi koleksi yang berisi wajah yang ingin Anda hapus. Ubah nilai `faces` menjadi ID wajah yang ingin Anda hapus. Untuk menghapus beberapa wajah, tambahkan wajah IDs ke `faces` array.
```
//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 ]
Kode ini diambil dari GitHub repositori contoh SDK AWS Dokumentasi. Lihat contoh lengkapnya [di sini](https://github.com/awsdocs/aws-doc-sdk-examples/blob/master/javav2/example_code/rekognition/src/main/java/com/example/rekognition/DeleteFacesFromCollection.java).
```
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: " +
" \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 ]
AWS CLI Perintah ini menampilkan output JSON untuk operasi `delete-faces` CLI. Ganti nilai `collection-id` dengan nama koleksi yang berisi wajah yang ingin Anda hapus. Ganti nilai `face-ids` dengan array wajah IDs yang ingin Anda hapus. Ganti nilai `profile_name` di baris yang membuat sesi Rekognition dengan nama profil pengembang Anda.
```
aws rekognition delete-faces --collection-id "collection-id" --face-ids "faceid" --profile profile-name
```
------
#### [ Python ]
Contoh ini menghapus satu wajah dari koleksi.
Ubah nilai `collectionId` menjadi koleksi yang berisi wajah yang ingin Anda hapus. Ubah nilai `faces` menjadi ID wajah yang ingin Anda hapus. Untuk menghapus beberapa wajah, tambahkan wajah IDs ke `faces` array. Ganti nilai `profile_name` di baris yang membuat sesi Rekognition dengan nama profil pengembang Anda.
```
# 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 ]
Contoh ini menghapus satu wajah dari koleksi.
Ubah nilai `collectionId` menjadi koleksi yang berisi wajah yang ingin Anda hapus. Ubah nilai `faces` menjadi ID wajah yang ingin Anda hapus. Untuk menghapus beberapa wajah, tambahkan wajah IDs ke `faces` daftar.
```
//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 faces = new List() { "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 permintaan operasi
Input ke `DeleteFaces` adalah ID dari koleksi yang berisi wajah, dan array wajah IDs untuk wajah yang akan dihapus.
```
{
"CollectionId": "MyCollection",
"FaceIds": [
"daf29cac-f910-41e9-851f-6eeb0e08f973"
]
}
```
## DeleteFaces respon operasi
`DeleteFaces`Respons berisi array wajah IDs untuk wajah yang dihapus.
```
{
"DeletedFaces": [
"daf29cac-f910-41e9-851f-6eeb0e08f973"
]
}
```
Jika wajah yang IDs diberikan dalam input saat ini dikaitkan dengan Pengguna, mereka akan dikembalikan sebagai bagian dari UnsuccessfulFaceDeletions dengan alasan yang sah.
```
{
"DeletedFaces": [
"daf29cac-f910-41e9-851f-6eeb0e08f973"
],
"UnsuccessfulFaceDeletions" : [
{
"FaceId" : "0b683aed-a0f1-48b2-9b5e-139e9cc2a757",
"UserId" : "demoUser1",
"Reason" : ["ASSOCIATED_TO_AN_EXISTING_USER"]
}
]
}
```