La fonctionnalité de recherche de produits est en mode maintenance. Pour bénéficier d'une meilleure évolutivité et des mêmes fonctionnalités qu'avec la recherche de produits, utilisez l'entrepôt Vision.

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Détecter des visages dans un fichier Cloud Storage

Effectue une détection de visages sur un fichier stocké dans Cloud Storage.

En savoir plus

Pour obtenir une documentation détaillée incluant cet exemple de code, consultez la page suivante :

Exemple de code

Go

Pour savoir comment installer et utiliser la bibliothèque cliente pour la recherche de produits de l'API Vision, consultez la page Bibliothèques clientes de la recherche de produits de l'API Vision. Pour en savoir plus, consultez la documentation de référence sur les API de la recherche de produits de l'API Vision en langage Go.

Pour vous authentifier auprès de la recherche de produits de l'API Vision, configurez le service Identifiants par défaut de l'application. Pour en savoir plus, consultez Configurer l'authentification pour un environnement de développement local.


// detectFaces gets faces from the Vision API for an image at the given file path.
func detectFacesURI(w io.Writer, file string) error {
	ctx := context.Background()

	client, err := vision.NewImageAnnotatorClient(ctx)
	if err != nil {
		return err
	}

	image := vision.NewImageFromURI(file)
	annotations, err := client.DetectFaces(ctx, image, nil, 10)
	if err != nil {
		return err
	}
	if len(annotations) == 0 {
		fmt.Fprintln(w, "No faces found.")
	} else {
		fmt.Fprintln(w, "Faces:")
		for i, annotation := range annotations {
			fmt.Fprintln(w, "  Face", i)
			fmt.Fprintln(w, "    Anger:", annotation.AngerLikelihood)
			fmt.Fprintln(w, "    Joy:", annotation.JoyLikelihood)
			fmt.Fprintln(w, "    Surprise:", annotation.SurpriseLikelihood)
		}
	}
	return nil
}

Java


import com.google.cloud.vision.v1.AnnotateImageRequest;
import com.google.cloud.vision.v1.AnnotateImageResponse;
import com.google.cloud.vision.v1.BatchAnnotateImagesResponse;
import com.google.cloud.vision.v1.FaceAnnotation;
import com.google.cloud.vision.v1.Feature;
import com.google.cloud.vision.v1.Image;
import com.google.cloud.vision.v1.ImageAnnotatorClient;
import com.google.cloud.vision.v1.ImageSource;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class DetectFacesGcs {

  public static void detectFacesGcs() throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String filePath = "gs://your-gcs-bucket/path/to/image/file.jpg";
    detectFacesGcs(filePath);
  }

  // Detects faces in the specified remote image on Google Cloud Storage.
  public static void detectFacesGcs(String gcsPath) throws IOException {
    List<AnnotateImageRequest> requests = new ArrayList<>();

    ImageSource imgSource = ImageSource.newBuilder().setGcsImageUri(gcsPath).build();
    Image img = Image.newBuilder().setSource(imgSource).build();
    Feature feat = Feature.newBuilder().setType(Feature.Type.FACE_DETECTION).build();

    AnnotateImageRequest request =
        AnnotateImageRequest.newBuilder().addFeatures(feat).setImage(img).build();
    requests.add(request);

    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. After completing all of your requests, call
    // the "close" method on the client to safely clean up any remaining background resources.
    try (ImageAnnotatorClient client = ImageAnnotatorClient.create()) {
      BatchAnnotateImagesResponse response = client.batchAnnotateImages(requests);
      List<AnnotateImageResponse> responses = response.getResponsesList();

      for (AnnotateImageResponse res : responses) {
        if (res.hasError()) {
          System.out.format("Error: %s%n", res.getError().getMessage());
          return;
        }

        // For full list of available annotations, see http://g.co/cloud/vision/docs
        for (FaceAnnotation annotation : res.getFaceAnnotationsList()) {
          System.out.format(
              "anger: %s%njoy: %s%nsurprise: %s%nposition: %s",
              annotation.getAngerLikelihood(),
              annotation.getJoyLikelihood(),
              annotation.getSurpriseLikelihood(),
              annotation.getBoundingPoly());
        }
      }
    }
  }
}

Node.js

// Imports the Google Cloud client libraries
const vision = require('@google-cloud/vision');

// Creates a client
const client = new vision.ImageAnnotatorClient();

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// const bucketName = 'Bucket where the file resides, e.g. my-bucket';
// const fileName = 'Path to file within bucket, e.g. path/to/image.png';

// Performs face detection on the gcs file
const [result] = await client.faceDetection(`gs://${bucketName}/${fileName}`);
const faces = result.faceAnnotations;
console.log('Faces:');
faces.forEach((face, i) => {
  console.log(`  Face #${i + 1}:`);
  console.log(`    Joy: ${face.joyLikelihood}`);
  console.log(`    Anger: ${face.angerLikelihood}`);
  console.log(`    Sorrow: ${face.sorrowLikelihood}`);
  console.log(`    Surprise: ${face.surpriseLikelihood}`);
});

PHP

namespace Google\Cloud\Samples\Vision;

use Google\Cloud\Vision\V1\Client\ImageAnnotatorClient;

/**
 * @param string $path GCS path to the image, e.g. "gs://path/to/your/image.jpg"
 */
function detect_face_gcs(string $path)
{
    $imageAnnotator = new ImageAnnotatorClient();

    # annotate the image
    $response = $imageAnnotator->faceDetection($path);
    $faces = $response->getFaceAnnotations();

    # names of likelihood from google.cloud.vision.enums
    $likelihoodName = ['UNKNOWN', 'VERY_UNLIKELY', 'UNLIKELY',
    'POSSIBLE', 'LIKELY', 'VERY_LIKELY'];

    printf('%d faces found:' . PHP_EOL, count($faces));
    foreach ($faces as $face) {
        $anger = $face->getAngerLikelihood();
        printf('Anger: %s' . PHP_EOL, $likelihoodName[$anger]);

        $joy = $face->getJoyLikelihood();
        printf('Joy: %s' . PHP_EOL, $likelihoodName[$joy]);

        $surprise = $face->getSurpriseLikelihood();
        printf('Surprise: %s' . PHP_EOL, $likelihoodName[$surprise]);

        # get bounds
        $vertices = $face->getBoundingPoly()->getVertices();
        $bounds = [];
        foreach ($vertices as $vertex) {
            $bounds[] = sprintf('(%d,%d)', $vertex->getX(), $vertex->getY());
        }
        print('Bounds: ' . join(', ', $bounds) . PHP_EOL);
        print(PHP_EOL);
    }

    $imageAnnotator->close();
}

Python

def detect_faces_uri(uri):
    """Detects faces in the file located in Google Cloud Storage or the web."""
    from google.cloud import vision

    client = vision.ImageAnnotatorClient()
    image = vision.Image()
    image.source.image_uri = uri

    response = client.face_detection(image=image)
    faces = response.face_annotations

    # Names of likelihood from google.cloud.vision.enums
    likelihood_name = (
        "UNKNOWN",
        "VERY_UNLIKELY",
        "UNLIKELY",
        "POSSIBLE",
        "LIKELY",
        "VERY_LIKELY",
    )
    print("Faces:")

    for face in faces:
        print(f"anger: {likelihood_name[face.anger_likelihood]}")
        print(f"joy: {likelihood_name[face.joy_likelihood]}")
        print(f"surprise: {likelihood_name[face.surprise_likelihood]}")

        vertices = [
            f"({vertex.x},{vertex.y})" for vertex in face.bounding_poly.vertices
        ]

        print("face bounds: {}".format(",".join(vertices)))

    if response.error.message:
        raise Exception(
            "{}\nFor more info on error messages, check: "
            "https://cloud.google.com/apis/design/errors".format(response.error.message)
        )

Étape suivante

Pour rechercher et filtrer des exemples de code pour d'autres produits Google Cloud , consultez l'explorateur d'exemplesGoogle Cloud .

Détecter des visages dans un fichier Cloud Storage Restez organisé à l'aide des collections Enregistrez et classez les contenus selon vos préférences.