Riconoscimento delle celebrità in un'immagine

Per riconoscere volti celebri in un'immagine

1. Se non lo si è già fatto:

   1. Crea o aggiorna un utente con le autorizzazioni AmazonRekognitionFullAccess e AmazonS3ReadOnlyAccess. Per ulteriori informazioni, consulta Passaggio 1: configura un AWS account e crea un utente.

   2. Installare e configurare la AWS CLI e gli SDK AWS. Per ulteriori informazioni, consulta Fase 2: Configurare il AWS CLI e AWS SDKs.

2. Utilizzare i seguenti esempi per richiamare l'operazione RecognizeCelebrities.

   Java

   Questo esempio mostra le informazioni sui volti celebri che vengono rilevati in un'immagine.

   Modifica il valore di photo con il percorso e il nome di un file immagine archiviato in locale contenente uno o più volti celebri.

   //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.Image;
   import com.amazonaws.services.rekognition.model.BoundingBox;
   import com.amazonaws.services.rekognition.model.Celebrity;
   import com.amazonaws.services.rekognition.model.RecognizeCelebritiesRequest;
   import com.amazonaws.services.rekognition.model.RecognizeCelebritiesResult;
   import java.io.File;
   import java.io.FileInputStream;
   import java.io.InputStream;
   import java.nio.ByteBuffer;
   import com.amazonaws.util.IOUtils;
   import java.util.List;
   
   
   public class RecognizeCelebrities {
   
      public static void main(String[] args) {
         String photo = "moviestars.jpg";
   
         AmazonRekognition rekognitionClient = AmazonRekognitionClientBuilder.defaultClient();
   
         ByteBuffer imageBytes=null;
         try (InputStream inputStream = new FileInputStream(new File(photo))) {
            imageBytes = ByteBuffer.wrap(IOUtils.toByteArray(inputStream));
         }
         catch(Exception e)
         {
             System.out.println("Failed to load file " + photo);
             System.exit(1);
         }
   
   
         RecognizeCelebritiesRequest request = new RecognizeCelebritiesRequest()
            .withImage(new Image()
            .withBytes(imageBytes));
   
         System.out.println("Looking for celebrities in image " + photo + "\n");
   
         RecognizeCelebritiesResult result=rekognitionClient.recognizeCelebrities(request);
   
         //Display recognized celebrity information
         List<Celebrity> celebs=result.getCelebrityFaces();
         System.out.println(celebs.size() + " celebrity(s) were recognized.\n");
   
         for (Celebrity celebrity: celebs) {
             System.out.println("Celebrity recognized: " + celebrity.getName());
             System.out.println("Celebrity ID: " + celebrity.getId());
             BoundingBox boundingBox=celebrity.getFace().getBoundingBox();
             System.out.println("position: " +
                boundingBox.getLeft().toString() + " " +
                boundingBox.getTop().toString());
             System.out.println("Further information (if available):");
             for (String url: celebrity.getUrls()){
                System.out.println(url);
             }
             System.out.println();
          }
          System.out.println(result.getUnrecognizedFaces().size() + " face(s) were unrecognized.");
      }
   }

   Java V2

   Questo codice è tratto dal GitHub repository degli esempi di AWS Documentation SDK. Guarda l'esempio completo qui.

   //snippet-start:[rekognition.java2.recognize_celebs.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.core.SdkBytes;
   import java.io.FileInputStream;
   import java.io.FileNotFoundException;
   import java.io.InputStream;
   import java.util.List;
   import software.amazon.awssdk.services.rekognition.model.RecognizeCelebritiesRequest;
   import software.amazon.awssdk.services.rekognition.model.RecognizeCelebritiesResponse;
   import software.amazon.awssdk.services.rekognition.model.RekognitionException;
   import software.amazon.awssdk.services.rekognition.model.Image;
   import software.amazon.awssdk.services.rekognition.model.Celebrity;
   //snippet-end:[rekognition.java2.recognize_celebs.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 RecognizeCelebrities {
   
    public static void main(String[] args) {
   
        final String usage = "\n" +
            "Usage: " +
            "   <sourceImage>\n\n" +
            "Where:\n" +
            "   sourceImage - The path to the image (for example, C:\\AWS\\pic1.png). \n\n";
   
        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }
   
        String sourceImage = args[0];
        Region region = Region.US_EAST_1;
        RekognitionClient rekClient = RekognitionClient.builder()
            .region(region)
            .credentialsProvider(ProfileCredentialsProvider.create("profile-name"))
            .build();
   
        System.out.println("Locating celebrities in " + sourceImage);
        recognizeAllCelebrities(rekClient, sourceImage);
        rekClient.close();
    }
   
    // snippet-start:[rekognition.java2.recognize_celebs.main]
    public static void recognizeAllCelebrities(RekognitionClient rekClient, String sourceImage) {
   
        try {
            InputStream sourceStream = new FileInputStream(sourceImage);
            SdkBytes sourceBytes = SdkBytes.fromInputStream(sourceStream);
            Image souImage = Image.builder()
                .bytes(sourceBytes)
                .build();
   
            RecognizeCelebritiesRequest request = RecognizeCelebritiesRequest.builder()
                .image(souImage)
                .build();
   
            RecognizeCelebritiesResponse result = rekClient.recognizeCelebrities(request) ;
            List<Celebrity> celebs=result.celebrityFaces();
            System.out.println(celebs.size() + " celebrity(s) were recognized.\n");
            for (Celebrity celebrity: celebs) {
                System.out.println("Celebrity recognized: " + celebrity.name());
                System.out.println("Celebrity ID: " + celebrity.id());
   
                System.out.println("Further information (if available):");
                for (String url: celebrity.urls()){
                    System.out.println(url);
                }
                System.out.println();
            }
            System.out.println(result.unrecognizedFaces().size() + " face(s) were unrecognized.");
   
        } catch (RekognitionException | FileNotFoundException e) {
            System.out.println(e.getMessage());
            System.exit(1);
        }
    }
    // snippet-end:[rekognition.java2.recognize_celebs.main]
   }

   AWS CLI

   Questo comando AWS CLI visualizza l'output JSON dell'operazione CLI recognize-celebrities.

   Sostituisci bucketname con il nome di un bucket Amazon S3 contenente un'immagine. Modifica input.jpg con il nome di un file immagine archiviato in locale contenente uno o più volti celebri.

   Sostituisci il valore di profile_name con il nome del tuo profilo di sviluppatore.

   aws rekognition recognize-celebrities \
     --image "S3Object={Bucket=bucketname,Name=input.jpg}"

   Se accedi alla CLI da un dispositivo Windows, usa le virgolette doppie anziché le virgolette singole ed evita le virgolette doppie interne tramite barra rovesciata (ovvero, \) per risolvere eventuali errori del parser che potresti riscontrare. Per un esempio, consulta quanto segue:

   
                                       aws rekognition recognize-celebrities --image \
                                       "{\"S3Object\":{\"Bucket\":\"bucket-name\",\"Name\":\"image-name\"}}" --profile profile-name
                                   

   Python

   Questo esempio mostra le informazioni sui volti celebri che vengono rilevati in un'immagine.

   Modifica il valore di photo con il percorso e il nome di un file immagine archiviato in locale contenente uno o più volti celebri.

   Sostituisci il valore di profile_name nella riga che crea la sessione di Rekognition con il nome del tuo profilo di sviluppatore.

   #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 recognize_celebrities(photo):
       
       session = boto3.Session(profile_name='profile-name')
       client = session.client('rekognition')
   
       with open(photo, 'rb') as image:
           response = client.recognize_celebrities(Image={'Bytes': image.read()})
   
       print('Detected faces for ' + photo)
       for celebrity in response['CelebrityFaces']:
           print('Name: ' + celebrity['Name'])
           print('Id: ' + celebrity['Id'])
           print('KnownGender: ' + celebrity['KnownGender']['Type'])
           print('Smile: ' + str(celebrity['Face']['Smile']['Value']))
           print('Position:')
           print('   Left: ' + '{:.2f}'.format(celebrity['Face']['BoundingBox']['Height']))
           print('   Top: ' + '{:.2f}'.format(celebrity['Face']['BoundingBox']['Top']))
           print('Info')
           for url in celebrity['Urls']:
               print('   ' + url)
           print()
       return len(response['CelebrityFaces'])
   
   def main():
       photo = 'photo-name'
       celeb_count = recognize_celebrities(photo)
       print("Celebrities detected: " + str(celeb_count))
   
   if __name__ == "__main__":
       main()

   Node.Js

   Questo esempio mostra le informazioni sui volti celebri che vengono rilevati in un'immagine.

   Modifica il valore di photo con il percorso e il nome di un file immagine archiviato in locale contenente uno o più volti celebri. Modifica il valore di bucket con quello del nome del bucket S3 che contiene il file immagine fornito. Modifica il valore di REGION con quello del nome della regione associata al tuo utente. Sostituisci il valore di profile_name nella riga che crea la sessione di Rekognition con il nome del tuo profilo di sviluppatore.

   // Import required AWS SDK clients and commands for Node.js
   import { RecognizeCelebritiesCommand } from  "@aws-sdk/client-rekognition";
   import  { RekognitionClient } from "@aws-sdk/client-rekognition";
   
   // Set the AWS Region.
   const REGION = "region-name"; //e.g. "us-east-1"
   const profileName = "profile-name";
   
   // Create SNS service object.
   const rekogClient = new RekognitionClient({region: REGION, 
     credentials: fromIni({profile: profileName,}), 
   });
   
   const bucket = 'bucket-name'
   const photo = 'photo-name'
   
   // Set params
   const params = {
       Image: {
         S3Object: {
           Bucket: bucket,
           Name: photo
         },
       },
     }
   
   const recognize_celebrity = async() => {
       try {
           const response = await rekogClient.send(new RecognizeCelebritiesCommand(params));
           console.log(response.Labels)
           response.CelebrityFaces.forEach(celebrity =>{
               console.log(`Name: ${celebrity.Name}`)
               console.log(`ID: ${celebrity.Id}`)
               console.log(`KnownGender: ${celebrity.KnownGender.Type}`)
               console.log(`Smile: ${celebrity.Smile}`)
               console.log('Position: ')
               console.log(`   Left: ${celebrity.Face.BoundingBox.Height}`)
               console.log(`  Top : ${celebrity.Face.BoundingBox.Top}`)
               
           })
           return response.length; // For unit tests.
         } catch (err) {
           console.log("Error", err);
         }
   }
   
   recognize_celebrity()
   

   .NET

   Questo esempio mostra le informazioni sui volti celebri che vengono rilevati in un'immagine.

   Modifica il valore di photo con il percorso e il nome di un file immagine archiviato in locale contenente uno o più volti celebri in formato .jpg o .png.

   //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.IO;
   using Amazon.Rekognition;
   using Amazon.Rekognition.Model;
   
   public class CelebritiesInImage
   {
       public static void Example()
       {
           String photo = "moviestars.jpg";
   
           AmazonRekognitionClient rekognitionClient = new AmazonRekognitionClient();
   
           RecognizeCelebritiesRequest recognizeCelebritiesRequest = new RecognizeCelebritiesRequest();
   
           Amazon.Rekognition.Model.Image img = new Amazon.Rekognition.Model.Image();
           byte[] data = null;
           try
           {
               using (FileStream fs = new FileStream(photo, FileMode.Open, FileAccess.Read))
               {
                   data = new byte[fs.Length];
                   fs.Read(data, 0, (int)fs.Length);
               }
           }
           catch(Exception)
           {
               Console.WriteLine("Failed to load file " + photo);
               return;
           }
   
           img.Bytes = new MemoryStream(data);
           recognizeCelebritiesRequest.Image = img;
   
           Console.WriteLine("Looking for celebrities in image " + photo + "\n");
   
           RecognizeCelebritiesResponse recognizeCelebritiesResponse = rekognitionClient.RecognizeCelebrities(recognizeCelebritiesRequest);
   
           Console.WriteLine(recognizeCelebritiesResponse.CelebrityFaces.Count + " celebrity(s) were recognized.\n");
           foreach (Celebrity celebrity in recognizeCelebritiesResponse.CelebrityFaces)
           {
               Console.WriteLine("Celebrity recognized: " + celebrity.Name);
               Console.WriteLine("Celebrity ID: " + celebrity.Id);
               BoundingBox boundingBox = celebrity.Face.BoundingBox;
               Console.WriteLine("position: " +
                  boundingBox.Left + " " + boundingBox.Top);
               Console.WriteLine("Further information (if available):");
               foreach (String url in celebrity.Urls)
                   Console.WriteLine(url);
           }
           Console.WriteLine(recognizeCelebritiesResponse.UnrecognizedFaces.Count + " face(s) were unrecognized.");
       }
   }

3. Registra il valore di uno dei nuovi ID dei volti celebri visualizzati. Questo valore sarà necessario nella Come recuperare le informazioni su una celebrità.