Utilizzare RecognizeCelebrities con un SDK AWS o una CLI

    using System;
    using System.IO;
    using System.Threading.Tasks;
    using Amazon.Rekognition;
    using Amazon.Rekognition.Model;

    /// <summary>
    /// Shows how to use Amazon Rekognition to identify celebrities in a photo.
    /// </summary>
    public class CelebritiesInImage
    {
        public static async Task Main(string[] args)
        {
            string photo = "moviestars.jpg";

            var rekognitionClient = new AmazonRekognitionClient();

            var recognizeCelebritiesRequest = new RecognizeCelebritiesRequest();

            var img = new Amazon.Rekognition.Model.Image();
            byte[] data = null;
            try
            {
                using var 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");

            var recognizeCelebritiesResponse = await rekognitionClient.RecognizeCelebritiesAsync(recognizeCelebritiesRequest);

            Console.WriteLine($"{recognizeCelebritiesResponse.CelebrityFaces.Count} celebrity(s) were recognized.\n");
            recognizeCelebritiesResponse.CelebrityFaces.ForEach(celeb =>
            {
                Console.WriteLine($"Celebrity recognized: {celeb.Name}");
                Console.WriteLine($"Celebrity ID: {celeb.Id}");
                BoundingBox boundingBox = celeb.Face.BoundingBox;
                Console.WriteLine($"position: {boundingBox.Left} {boundingBox.Top}");
                Console.WriteLine("Further information (if available):");
                celeb.Urls.ForEach(url =>
                {
                    Console.WriteLine(url);
                });
            });

            Console.WriteLine($"{recognizeCelebritiesResponse.UnrecognizedFaces.Count} face(s) were unrecognized.");
        }
    }

Come riconoscere volti celebri in un’immagine

Il comando recognize-celebrities seguente riconosce le celebrità nell’immagine specificata archiviata in un bucket Amazon S3:

aws rekognition recognize-celebrities \
    --image "S3Object={Bucket=MyImageS3Bucket,Name=moviestars.jpg}"

Output:

{
    "UnrecognizedFaces": [
        {
            "BoundingBox": {
                "Width": 0.14416666328907013,
                "Top": 0.07777778059244156,
                "Left": 0.625,
                "Height": 0.2746031880378723
            },
            "Confidence": 99.9990234375,
            "Pose": {
                "Yaw": 10.80408763885498,
                "Roll": -12.761146545410156,
                "Pitch": 10.96889877319336
            },
            "Quality": {
                "Sharpness": 94.1185531616211,
                "Brightness": 79.18367004394531
            },
            "Landmarks": [
                {
                    "Y": 0.18220913410186768,
                    "X": 0.6702951788902283,
                    "Type": "eyeLeft"
                },
                {
                    "Y": 0.16337193548679352,
                    "X": 0.7188183665275574,
                    "Type": "eyeRight"
                },
                {
                    "Y": 0.20739148557186127,
                    "X": 0.7055801749229431,
                    "Type": "nose"
                },
                {
                    "Y": 0.2889308035373688,
                    "X": 0.687512218952179,
                    "Type": "mouthLeft"
                },
                {
                    "Y": 0.2706988751888275,
                    "X": 0.7250053286552429,
                    "Type": "mouthRight"
                }
            ]
        }
    ],
    "CelebrityFaces": [
        {
            "MatchConfidence": 100.0,
            "Face": {
                "BoundingBox": {
                    "Width": 0.14000000059604645,
                    "Top": 0.1190476194024086,
                    "Left": 0.82833331823349,
                    "Height": 0.2666666805744171
                },
                "Confidence": 99.99359130859375,
                "Pose": {
                    "Yaw": -10.509642601013184,
                    "Roll": -14.51749324798584,
                    "Pitch": 13.799399375915527
                },
                "Quality": {
                    "Sharpness": 78.74752044677734,
                    "Brightness": 42.201324462890625
                },
                "Landmarks": [
                    {
                        "Y": 0.2290833294391632,
                        "X": 0.8709492087364197,
                        "Type": "eyeLeft"
                    },
                    {
                        "Y": 0.20639978349208832,
                        "X": 0.9153988361358643,
                        "Type": "eyeRight"
                    },
                    {
                        "Y": 0.25417643785476685,
                        "X": 0.8907724022865295,
                        "Type": "nose"
                    },
                    {
                        "Y": 0.32729196548461914,
                        "X": 0.8876466155052185,
                        "Type": "mouthLeft"
                    },
                    {
                        "Y": 0.3115464746952057,
                        "X": 0.9238573312759399,
                        "Type": "mouthRight"
                    }
                ]
            },
            "Name": "Celeb A",
            "Urls": [
                "www.imdb.com/name/aaaaaaaaa"
            ],
            "Id": "1111111"
        },
        {
            "MatchConfidence": 97.0,
            "Face": {
                "BoundingBox": {
                    "Width": 0.13333334028720856,
                    "Top": 0.24920634925365448,
                    "Left": 0.4449999928474426,
                    "Height": 0.2539682686328888
                },
                "Confidence": 99.99979400634766,
                "Pose": {
                    "Yaw": 6.557040691375732,
                    "Roll": -7.316643714904785,
                    "Pitch": 9.272967338562012
                },
                "Quality": {
                    "Sharpness": 83.23492431640625,
                    "Brightness": 78.83267974853516
                },
                "Landmarks": [
                    {
                        "Y": 0.3625510632991791,
                        "X": 0.48898839950561523,
                        "Type": "eyeLeft"
                    },
                    {
                        "Y": 0.35366007685661316,
                        "X": 0.5313721299171448,
                        "Type": "eyeRight"
                    },
                    {
                        "Y": 0.3894785940647125,
                        "X": 0.5173314809799194,
                        "Type": "nose"
                    },
                    {
                        "Y": 0.44889405369758606,
                        "X": 0.5020005702972412,
                        "Type": "mouthLeft"
                    },
                    {
                        "Y": 0.4408611059188843,
                        "X": 0.5351271629333496,
                        "Type": "mouthRight"
                    }
                ]
            },
            "Name": "Celeb B",
            "Urls": [
                "www.imdb.com/name/bbbbbbbbb"
            ],
            "Id": "2222222"
        },
        {
            "MatchConfidence": 100.0,
            "Face": {
                "BoundingBox": {
                    "Width": 0.12416666746139526,
                    "Top": 0.2968254089355469,
                    "Left": 0.2150000035762787,
                    "Height": 0.23650793731212616
                },
                "Confidence": 99.99958801269531,
                "Pose": {
                    "Yaw": 7.801797866821289,
                    "Roll": -8.326810836791992,
                    "Pitch": 7.844768047332764
                },
                "Quality": {
                    "Sharpness": 86.93206024169922,
                    "Brightness": 79.81291198730469
                },
                "Landmarks": [
                    {
                        "Y": 0.4027804136276245,
                        "X": 0.2575301229953766,
                        "Type": "eyeLeft"
                    },
                    {
                        "Y": 0.3934555947780609,
                        "X": 0.2956969439983368,
                        "Type": "eyeRight"
                    },
                    {
                        "Y": 0.4309830069541931,
                        "X": 0.2837020754814148,
                        "Type": "nose"
                    },
                    {
                        "Y": 0.48186683654785156,
                        "X": 0.26812544465065,
                        "Type": "mouthLeft"
                    },
                    {
                        "Y": 0.47338807582855225,
                        "X": 0.29905644059181213,
                        "Type": "mouthRight"
                    }
                ]
            },
            "Name": "Celeb C",
            "Urls": [
                "www.imdb.com/name/ccccccccc"
            ],
            "Id": "3333333"
        },
        {
            "MatchConfidence": 97.0,
            "Face": {
                "BoundingBox": {
                    "Width": 0.11916666477918625,
                    "Top": 0.3698412775993347,
                    "Left": 0.008333333767950535,
                    "Height": 0.22698412835597992
                },
                "Confidence": 99.99999237060547,
                "Pose": {
                    "Yaw": 16.38478660583496,
                    "Roll": -1.0260354280471802,
                    "Pitch": 5.975185394287109
                },
                "Quality": {
                    "Sharpness": 83.23492431640625,
                    "Brightness": 61.408443450927734
                },
                "Landmarks": [
                    {
                        "Y": 0.4632347822189331,
                        "X": 0.049406956881284714,
                        "Type": "eyeLeft"
                    },
                    {
                        "Y": 0.46388113498687744,
                        "X": 0.08722897619009018,
                        "Type": "eyeRight"
                    },
                    {
                        "Y": 0.5020678639411926,
                        "X": 0.0758260041475296,
                        "Type": "nose"
                    },
                    {
                        "Y": 0.544157862663269,
                        "X": 0.054029736667871475,
                        "Type": "mouthLeft"
                    },
                    {
                        "Y": 0.5463630557060242,
                        "X": 0.08464983850717545,
                        "Type": "mouthRight"
                    }
                ]
            },
            "Name": "Celeb D",
            "Urls": [
                "www.imdb.com/name/ddddddddd"
            ],
            "Id": "4444444"
        }
    ]
}

Per ulteriori informazioni, consulta Riconoscimento di volti celebri in un’immagine nella Guida per gli sviluppatori di Amazon Rekognition.

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.*;

/**
 * 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 = """
                Usage:   <bucketName> <sourceImage>

                Where:
                   bucketName - The name of the S3 bucket where the images are stored.
                   sourceImage - The path to the image (for example, C:\\AWS\\pic1.png).\s
                """;

        if (args.length != 2) {
            System.out.println(usage);
            System.exit(1);
       }

        String bucketName = args[0];;
        String sourceImage = args[1];
        Region region = Region.US_WEST_2;
        RekognitionClient rekClient = RekognitionClient.builder()
                .region(region)
                .build();

        System.out.println("Locating celebrities in " + sourceImage);
        recognizeAllCelebrities(rekClient, bucketName, sourceImage);
        rekClient.close();
    }

    /**
     * Recognizes all celebrities in an image stored in an Amazon S3 bucket.
     *
     * @param rekClient    the Amazon Rekognition client used to perform the celebrity recognition operation
     * @param bucketName   the name of the Amazon S3 bucket where the source image is stored
     * @param sourceImage  the name of the source image file stored in the Amazon S3 bucket
     */
    public static void recognizeAllCelebrities(RekognitionClient rekClient, String bucketName, String sourceImage) {
        try {
            S3Object s3ObjectTarget = S3Object.builder()
                .bucket(bucketName)
                .name(sourceImage)
                .build();

            Image souImage = Image.builder()
                    .s3Object(s3ObjectTarget)
                    .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 e) {
            System.out.println(e.getMessage());
            System.exit(1);
        }
    }
}

suspend fun recognizeAllCelebrities(sourceImage: String?) {
    val souImage =
        Image {
            bytes = (File(sourceImage).readBytes())
        }

    val request =
        RecognizeCelebritiesRequest {
            image = souImage
        }

    RekognitionClient.fromEnvironment { region = "us-east-1" }.use { rekClient ->
        val response = rekClient.recognizeCelebrities(request)
        response.celebrityFaces?.forEach { celebrity ->
            println("Celebrity recognized: ${celebrity.name}")
            println("Celebrity ID:${celebrity.id}")
            println("Further information (if available):")
            celebrity.urls?.forEach { url ->
                println(url)
            }
        }
        println("${response.unrecognizedFaces?.size} face(s) were unrecognized.")
    }
}

class RekognitionImage:
    """
    Encapsulates an Amazon Rekognition image. This class is a thin wrapper
    around parts of the Boto3 Amazon Rekognition API.
    """

    def __init__(self, image, image_name, rekognition_client):
        """
        Initializes the image object.

        :param image: Data that defines the image, either the image bytes or
                      an Amazon S3 bucket and object key.
        :param image_name: The name of the image.
        :param rekognition_client: A Boto3 Rekognition client.
        """
        self.image = image
        self.image_name = image_name
        self.rekognition_client = rekognition_client


    def recognize_celebrities(self):
        """
        Detects celebrities in the image.

        :return: A tuple. The first element is the list of celebrities found in
                 the image. The second element is the list of faces that were
                 detected but did not match any known celebrities.
        """
        try:
            response = self.rekognition_client.recognize_celebrities(Image=self.image)
            celebrities = [
                RekognitionCelebrity(celeb) for celeb in response["CelebrityFaces"]
            ]
            other_faces = [
                RekognitionFace(face) for face in response["UnrecognizedFaces"]
            ]
            logger.info(
                "Found %s celebrities and %s other faces in %s.",
                len(celebrities),
                len(other_faces),
                self.image_name,
            )
        except ClientError:
            logger.exception("Couldn't detect celebrities in %s.", self.image_name)
            raise
        else:
            return celebrities, other_faces