Terjemahan disediakan oleh mesin penerjemah. Jika konten terjemahan yang diberikan bertentangan dengan versi bahasa Inggris aslinya, utamakan versi bahasa Inggris.
# Daftar wajah dan pengguna terkait dalam koleksi
Anda dapat menggunakan [ListFaces](https://docs.aws.amazon.com/rekognition/latest/APIReference/API_ListFaces.html)operasi untuk membuat daftar wajah dan pengguna terkait mereka dalam koleksi.
Untuk informasi selengkapnya, lihat [Mengelola wajah dalam koleksi](managing-face-collections.md#collections-index-faces).
**Untuk mendaftarkan wajah dalam koleksi (SDK)**
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 SDK. Untuk informasi selengkapnya, lihat [Langkah 2: Siapkan AWS CLI and AWS SDK](setup-awscli-sdk.md).
1. Gunakan contoh berikut untuk memanggil operasi `ListFaces`.
------
#### [ Java ]
Contoh ini menampilkan daftar wajah dalam koleksi.
Ubah nilai `collectionId` menjadi ID koleksi yang diinginkan.
```
//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.Face;
import com.amazonaws.services.rekognition.model.ListFacesRequest;
import com.amazonaws.services.rekognition.model.ListFacesResult;
import java.util.List;
import com.fasterxml.jackson.databind.ObjectMapper;
public class ListFacesInCollection {
public static final String collectionId = "MyCollection";
public static void main(String[] args) throws Exception {
AmazonRekognition rekognitionClient = AmazonRekognitionClientBuilder.defaultClient();
ObjectMapper objectMapper = new ObjectMapper();
ListFacesResult listFacesResult = null;
System.out.println("Faces in collection " + collectionId);
String paginationToken = null;
do {
if (listFacesResult != null) {
paginationToken = listFacesResult.getNextToken();
}
ListFacesRequest listFacesRequest = new ListFacesRequest()
.withCollectionId(collectionId)
.withMaxResults(1)
.withNextToken(paginationToken);
listFacesResult = rekognitionClient.listFaces(listFacesRequest);
List < Face > faces = listFacesResult.getFaces();
for (Face face: faces) {
System.out.println(objectMapper.writerWithDefaultPrettyPrinter()
.writeValueAsString(face));
}
} while (listFacesResult != null && listFacesResult.getNextToken() !=
null);
}
}
```
------
#### [ 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/ListFacesInCollection.java).
```
// snippet-start:[rekognition.java2.list_faces_collection.import]
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.Face;
import software.amazon.awssdk.services.rekognition.model.ListFacesRequest;
import software.amazon.awssdk.services.rekognition.model.ListFacesResponse;
import software.amazon.awssdk.services.rekognition.model.RekognitionException;
import java.util.List;
// snippet-end:[rekognition.java2.list_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 ListFacesInCollection {
public static void main(String[] args) {
final String usage = "\n" +
"Usage: " +
" \n\n" +
"Where:\n" +
" collectionId - The name of the collection. \n\n";
if (args.length < 1) {
System.out.println(usage);
System.exit(1);
}
String collectionId = args[0];
Region region = Region.US_EAST_1;
RekognitionClient rekClient = RekognitionClient.builder()
.region(region)
.credentialsProvider(ProfileCredentialsProvider.create("profile-name"))
.build();
System.out.println("Faces in collection " + collectionId);
listFacesCollection(rekClient, collectionId) ;
rekClient.close();
}
// snippet-start:[rekognition.java2.list_faces_collection.main]
public static void listFacesCollection(RekognitionClient rekClient, String collectionId ) {
try {
ListFacesRequest facesRequest = ListFacesRequest.builder()
.collectionId(collectionId)
.maxResults(10)
.build();
ListFacesResponse facesResponse = rekClient.listFaces(facesRequest);
List faces = facesResponse.faces();
for (Face face: faces) {
System.out.println("Confidence level there is a face: "+face.confidence());
System.out.println("The face Id value is "+face.faceId());
}
} catch (RekognitionException e) {
System.out.println(e.getMessage());
System.exit(1);
}
}
// snippet-end:[rekognition.java2.list_faces_collection.main]
}
```
------
#### [ AWS CLI ]
AWS CLI Perintah ini menampilkan output JSON untuk operasi `list-faces` CLI. Ganti nilai `collection-id` dengan nama koleksi yang ingin Anda cantumkan. Ganti nilai `profile_name` di baris yang membuat sesi Rekognition dengan nama profil pengembang Anda.
```
aws rekognition list-faces --collection-id "collection-id" --profile profile-name
```
------
#### [ Python ]
Contoh ini menampilkan daftar wajah dalam koleksi.
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 list_faces_in_collection(collection_id):
maxResults = 2
faces_count = 0
tokens = True
session = boto3.Session(profile_name='profile-name')
client = session.client('rekognition')
response = client.list_faces(CollectionId=collection_id,
MaxResults=maxResults)
print('Faces in collection ' + collection_id)
while tokens:
faces = response['Faces']
for face in faces:
print(face)
faces_count += 1
if 'NextToken' in response:
nextToken = response['NextToken']
response = client.list_faces(CollectionId=collection_id,
NextToken=nextToken, MaxResults=maxResults)
else:
tokens = False
return faces_count
def main():
collection_id = 'collection-id'
faces_count = list_faces_in_collection(collection_id)
print("faces count: " + str(faces_count))
if __name__ == "__main__":
main()
```
------
#### [ .NET ]
Contoh ini menampilkan daftar wajah dalam koleksi.
Ubah nilai `collectionId` menjadi ID koleksi yang diinginkan.
```
//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 Amazon.Rekognition;
using Amazon.Rekognition.Model;
public class ListFaces
{
public static void Example()
{
String collectionId = "MyCollection";
AmazonRekognitionClient rekognitionClient = new AmazonRekognitionClient();
ListFacesResponse listFacesResponse = null;
Console.WriteLine("Faces in collection " + collectionId);
String paginationToken = null;
do
{
if (listFacesResponse != null)
paginationToken = listFacesResponse.NextToken;
ListFacesRequest listFacesRequest = new ListFacesRequest()
{
CollectionId = collectionId,
MaxResults = 1,
NextToken = paginationToken
};
listFacesResponse = rekognitionClient.ListFaces(listFacesRequest);
foreach(Face face in listFacesResponse.Faces)
Console.WriteLine(face.FaceId);
} while (listFacesResponse != null && !String.IsNullOrEmpty(listFacesResponse.NextToken));
}
}
```
------
## ListFaces permintaan operasi
Input ke `ListFaces` adalah ID koleksi yang ingin Anda daftarkan wajah. `MaxResults`adalah jumlah maksimum wajah untuk kembali. ListFaces juga mengambil daftar ID wajah untuk memfilter hasilnya, dan ID pengguna yang disediakan untuk mencantumkan hanya wajah yang terkait dengan pengguna yang diberikan.
```
{
"CollectionId": "MyCollection",
"MaxResults": 1
}
```
Jika respons tersebut memiliki wajah lebih dari yang diminta oleh `MaxResults`, token dikembalikan sehingga Anda dapat menggunakannya untuk mendapatkan serangkaian hasil berikutnya, dalam panggilan berikutnya untuk `ListFaces`. Contoh:
```
{
"CollectionId": "MyCollection",
"NextToken": "sm+5ythT3aeEVIR4WA....",
"MaxResults": 1
}
```
## ListFaces respon operasi
Respons dari `ListFaces` adalah informasi tentang metadata wajah yang disimpan dalam koleksi tertentu.
+ **FaceModelVersion**— Versi model wajah yang terkait dengan koleksi. Untuk informasi selengkapnya, lihat [Memahami versi model](face-detection-model.md).
+ **Wajah** — Informasi tentang wajah dalam koleksi. Hal ini mencakup informasi tentang [BoundingBox](https://docs.aws.amazon.com/rekognition/latest/APIReference/API_BoundingBox.html), kepercayaan diri, pengidentifikasi citra, dan ID wajah. Untuk informasi lebih lanjut, lihat [Wajah](https://docs.aws.amazon.com/rekognition/latest/APIReference/API_Face.html).
+ **NextToken**— Token yang digunakan untuk mendapatkan set hasil berikutnya.
```
{
"FaceModelVersion": "6.0",
"Faces": [
{
"Confidence": 99.76940155029297,
"IndexFacesModelVersion": "6.0",
"UserId": "demoUser2",
"ImageId": "56a0ca74-1c83-39dd-b363-051a64168a65",
"BoundingBox": {
"Width": 0.03177810087800026,
"Top": 0.36568498611450195,
"Left": 0.3453829884529114,
"Height": 0.056759100407361984
},
"FaceId": "c92265d4-5f9c-43af-a58e-12be0ce02bc3"
},
{
"BoundingBox": {
"Width": 0.03254450112581253,
"Top": 0.6080359816551208,
"Left": 0.5160620212554932,
"Height": 0.06347999721765518
},
"IndexFacesModelVersion": "6.0",
"FaceId": "851cb847-dccc-4fea-9309-9f4805967855",
"Confidence": 99.94369506835938,
"ImageId": "a8aed589-ceec-35f7-9c04-82e0b546b024"
},
{
"BoundingBox": {
"Width": 0.03094629943370819,
"Top": 0.4218429923057556,
"Left": 0.6513839960098267,
"Height": 0.05266290158033371
},
"IndexFacesModelVersion": "6.0",
"FaceId": "c0eb3b65-24a0-41e1-b23a-1908b1aaeac1",
"Confidence": 99.82969665527344,
"ImageId": "56a0ca74-1c83-39dd-b363-051a64168a65"
}
]
}
```