Verwenden Sie SearchFaces mit einem AWS SDKoder CLI

Die folgenden Codebeispiele zeigen die VerwendungSearchFaces.

Weitere Informationen finden Sie unter Nach einem Gesicht suchen (Gesichts-ID).

.NET

AWS SDK for .NET

Anmerkung

Es gibt noch mehr dazu GitHub. Das vollständige Beispiel und Informationen zur Einrichtung und Ausführung finden Sie in AWS Repository mit Codebeispielen.

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

    /// <summary>
    /// Uses the Amazon Rekognition Service to find faces in an image that
    /// match the face Id provided in the method request.
    /// </summary>
    public class SearchFacesMatchingId
    {
        public static async Task Main()
        {
            string collectionId = "MyCollection";
            string faceId = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";

            var rekognitionClient = new AmazonRekognitionClient();

            // Search collection for faces matching the face id.
            var searchFacesRequest = new SearchFacesRequest
            {
                CollectionId = collectionId,
                FaceId = faceId,
                FaceMatchThreshold = 70F,
                MaxFaces = 2,
            };

            SearchFacesResponse searchFacesResponse = await rekognitionClient.SearchFacesAsync(searchFacesRequest);

            Console.WriteLine("Face matching faceId " + faceId);

            Console.WriteLine("Matche(s): ");
            searchFacesResponse.FaceMatches.ForEach(face =>
            {
                Console.WriteLine($"FaceId: {face.Face.FaceId} Similarity: {face.Similarity}");
            });
        }
    }

• APIEinzelheiten finden Sie SearchFacesunter AWS SDK for .NET APIReferenz.

CLI

AWS CLI

Um in einer Sammlung nach Gesichtern zu suchen, die einer Gesichts-ID entsprechen.

Mit dem folgenden search-faces Befehl wird in einer Sammlung nach Gesichtern gesucht, die der angegebenen Gesichts-ID entsprechen.

aws rekognition search-faces \
    --face-id 8d3cfc70-4ba8-4b36-9644-90fba29c2dac \
    --collection-id MyCollection

Ausgabe:

{
    "SearchedFaceId": "8d3cfc70-4ba8-4b36-9644-90fba29c2dac",
    "FaceModelVersion": "3.0",
    "FaceMatches": [
        {
            "Face": {
                "BoundingBox": {
                    "Width": 0.48166701197624207,
                    "Top": 0.20999999344348907,
                    "Left": 0.21250000596046448,
                    "Height": 0.36125001311302185
                },
                "FaceId": "bd4ceb4d-9acc-4ab7-8ef8-1c2d2ba0a66a",
                "ExternalImageId": "image1.jpg",
                "Confidence": 99.99949645996094,
                "ImageId": "5e1a7588-e5a0-5ee3-bd00-c642518dfe3a"
            },
            "Similarity": 99.30997467041016
        },
        {
            "Face": {
                "BoundingBox": {
                    "Width": 0.18562500178813934,
                    "Top": 0.1618019938468933,
                    "Left": 0.5575000047683716,
                    "Height": 0.24770599603652954
                },
                "FaceId": "ce7ed422-2132-4a11-ab14-06c5c410f29f",
                "ExternalImageId": "example-image.jpg",
                "Confidence": 99.99340057373047,
                "ImageId": "8d67061e-90d2-598f-9fbd-29c8497039c0"
            },
            "Similarity": 99.24862670898438
        },
        {
            "Face": {
                "BoundingBox": {
                    "Width": 0.18562500178813934,
                    "Top": 0.1618019938468933,
                    "Left": 0.5575000047683716,
                    "Height": 0.24770599603652954
                },
                "FaceId": "13692fe4-990a-4679-b14a-5ac23d135eab",
                "ExternalImageId": "image3.jpg",
                "Confidence": 99.99340057373047,
                "ImageId": "8df18239-9ad1-5acd-a46a-6581ff98f51b"
            },
            "Similarity": 99.24862670898438
        },
        {
            "Face": {
                "BoundingBox": {
                    "Width": 0.5349419713020325,
                    "Top": 0.29124999046325684,
                    "Left": 0.16389399766921997,
                    "Height": 0.40187498927116394
                },
                "FaceId": "745f7509-b1fa-44e0-8b95-367b1359638a",
                "ExternalImageId": "image9.jpg",
                "Confidence": 99.99979400634766,
                "ImageId": "67a34327-48d1-5179-b042-01e52ccfeada"
            },
            "Similarity": 96.73158264160156
        },
        {
            "Face": {
                "BoundingBox": {
                    "Width": 0.5307819843292236,
                    "Top": 0.2862499952316284,
                    "Left": 0.1564060002565384,
                    "Height": 0.3987500071525574
                },
                "FaceId": "2eb5f3fd-e2a9-4b1c-a89f-afa0a518fe06",
                "ExternalImageId": "image10.jpg",
                "Confidence": 99.99970245361328,
                "ImageId": "3c314792-197d-528d-bbb6-798ed012c150"
            },
            "Similarity": 96.48291015625
        },
        {
            "Face": {
                "BoundingBox": {
                    "Width": 0.5074880123138428,
                    "Top": 0.3774999976158142,
                    "Left": 0.18302799761295319,
                    "Height": 0.3812499940395355
                },
                "FaceId": "086261e8-6deb-4bc0-ac73-ab22323cc38d",
                "ExternalImageId": "image6.jpg",
                "Confidence": 99.99930572509766,
                "ImageId": "ae1593b0-a8f6-5e24-a306-abf529e276fa"
            },
            "Similarity": 96.43287658691406
        },
        {
            "Face": {
                "BoundingBox": {
                    "Width": 0.5574039816856384,
                    "Top": 0.37187498807907104,
                    "Left": 0.14559100568294525,
                    "Height": 0.4181250035762787
                },
                "FaceId": "11c4bd3c-19c5-4eb8-aecc-24feb93a26e1",
                "ExternalImageId": "image5.jpg",
                "Confidence": 99.99960327148438,
                "ImageId": "80739b4d-883f-5b78-97cf-5124038e26b9"
            },
            "Similarity": 95.25305938720703
        },
        {
            "Face": {
                "BoundingBox": {
                    "Width": 0.5773710012435913,
                    "Top": 0.34437501430511475,
                    "Left": 0.12396000325679779,
                    "Height": 0.4337500035762787
                },
                "FaceId": "57189455-42b0-4839-a86c-abda48b13174",
                "ExternalImageId": "image8.jpg",
                "Confidence": 100.0,
                "ImageId": "0aff2f37-e7a2-5dbc-a3a3-4ef6ec18eaa0"
            },
            "Similarity": 95.22837829589844
        }
    ]
}

Weitere Informationen finden Sie unter Suchen nach einem Gesicht anhand seiner Gesichts-ID im Amazon Rekognition Developer Guide.

• APIEinzelheiten finden Sie unter SearchFacesAWS CLI Befehlsreferenz.

Java

SDKfür Java 2.x

Anmerkung

Es gibt noch mehr dazu. GitHub Finden Sie das vollständige Beispiel und erfahren Sie, wie Sie es einrichten und ausführen in der AWS Repository mit Codebeispielen.

import software.amazon.awssdk.core.SdkBytes;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.rekognition.RekognitionClient;
import software.amazon.awssdk.services.rekognition.model.RekognitionException;
import software.amazon.awssdk.services.rekognition.model.SearchFacesByImageRequest;
import software.amazon.awssdk.services.rekognition.model.Image;
import software.amazon.awssdk.services.rekognition.model.SearchFacesByImageResponse;
import software.amazon.awssdk.services.rekognition.model.FaceMatch;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.List;

/**
 * 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 SearchFaceMatchingImageCollection {
    public static void main(String[] args) {
        final String usage = """

                Usage:    <collectionId> <sourceImage>

                Where:
                   collectionId - The id of the collection. \s
                   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 collectionId = args[0];
        String sourceImage = args[1];
        Region region = Region.US_EAST_1;
        RekognitionClient rekClient = RekognitionClient.builder()
                .region(region)
                .build();

        System.out.println("Searching for a face in a collections");
        searchFaceInCollection(rekClient, collectionId, sourceImage);
        rekClient.close();
    }

    public static void searchFaceInCollection(RekognitionClient rekClient, String collectionId, String sourceImage) {
        try {
            InputStream sourceStream = new FileInputStream(new File(sourceImage));
            SdkBytes sourceBytes = SdkBytes.fromInputStream(sourceStream);
            Image souImage = Image.builder()
                    .bytes(sourceBytes)
                    .build();

            SearchFacesByImageRequest facesByImageRequest = SearchFacesByImageRequest.builder()
                    .image(souImage)
                    .maxFaces(10)
                    .faceMatchThreshold(70F)
                    .collectionId(collectionId)
                    .build();

            SearchFacesByImageResponse imageResponse = rekClient.searchFacesByImage(facesByImageRequest);
            System.out.println("Faces matching in the collection");
            List<FaceMatch> faceImageMatches = imageResponse.faceMatches();
            for (FaceMatch face : faceImageMatches) {
                System.out.println("The similarity level is  " + face.similarity());
                System.out.println();
            }

        } catch (RekognitionException | FileNotFoundException e) {
            System.out.println(e.getMessage());
            System.exit(1);
        }
    }
}

• APIEinzelheiten finden Sie SearchFacesunter AWS SDK for Java 2.x APIReferenz.

Python

SDKfür Python (Boto3)

Anmerkung

Es gibt noch mehr dazu. GitHub Finden Sie das vollständige Beispiel und erfahren Sie, wie Sie es einrichten und ausführen in der AWS Repository mit Codebeispielen.

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

    def __init__(self, collection, rekognition_client):
        """
        Initializes a collection object.

        :param collection: Collection data in the format returned by a call to
                           create_collection.
        :param rekognition_client: A Boto3 Rekognition client.
        """
        self.collection_id = collection["CollectionId"]
        self.collection_arn, self.face_count, self.created = self._unpack_collection(
            collection
        )
        self.rekognition_client = rekognition_client

    @staticmethod
    def _unpack_collection(collection):
        """
        Unpacks optional parts of a collection that can be returned by
        describe_collection.

        :param collection: The collection data.
        :return: A tuple of the data in the collection.
        """
        return (
            collection.get("CollectionArn"),
            collection.get("FaceCount", 0),
            collection.get("CreationTimestamp"),
        )


    def search_faces(self, face_id, threshold, max_faces):
        """
        Searches for faces in the collection that match another face from the
        collection.

        :param face_id: The ID of the face in the collection to search for.
        :param threshold: The match confidence must be greater than this value
                          for a face to be included in the results.
        :param max_faces: The maximum number of faces to return.
        :return: The list of matching faces found in the collection. This list does
                 not contain the face specified by `face_id`.
        """
        try:
            response = self.rekognition_client.search_faces(
                CollectionId=self.collection_id,
                FaceId=face_id,
                FaceMatchThreshold=threshold,
                MaxFaces=max_faces,
            )
            faces = [RekognitionFace(face["Face"]) for face in response["FaceMatches"]]
            logger.info(
                "Found %s faces in %s that match %s.",
                len(faces),
                self.collection_id,
                face_id,
            )
        except ClientError:
            logger.exception(
                "Couldn't search for faces in %s that match %s.",
                self.collection_id,
                face_id,
            )
            raise
        else:
            return faces

• APIEinzelheiten finden Sie SearchFacesunter AWS SDKfür Python (Boto3) API -Referenz.

Für eine vollständige Liste von AWS SDKEntwicklerhandbücher und Codebeispiele finden Sie unterRekognition mit einem AWS SDK. Dieses Thema enthält auch Informationen zu den ersten Schritten und Details zu früheren SDK Versionen.