Get the reference images.

Retrieve reference images.

Documentation pages that include this code sample

To view the code sample used in context, see the following documentation:

Code sample

Go


import (
	"context"
	"fmt"
	"io"

	vision "cloud.google.com/go/vision/apiv1"
	visionpb "google.golang.org/genproto/googleapis/cloud/vision/v1"
)

// getReferenceImage gets a reference image.
func getReferenceImage(w io.Writer, projectID string, location string, productID string, referenceImageID string) error {
	ctx := context.Background()
	c, err := vision.NewProductSearchClient(ctx)
	if err != nil {
		return fmt.Errorf("NewProductSearchClient: %v", err)
	}
	defer c.Close()

	req := &visionpb.GetReferenceImageRequest{
		Name: fmt.Sprintf("projects/%s/locations/%s/products/%s/referenceImages/%s", projectID, location, productID, referenceImageID),
	}

	resp, err := c.GetReferenceImage(ctx, req)
	if err != nil {
		return fmt.Errorf("GetReferenceImage: %v", err)
	}

	fmt.Fprintf(w, "Reference image name: %s\n", resp.Name)
	fmt.Fprintf(w, "Reference image uri: %s\n", resp.Uri)
	fmt.Fprintf(w, "Reference image bounding polygons: %s\n", resp.BoundingPolys)

	return nil
}

Java

/**
 * Get info about a reference image.
 *
 * @param projectId - Id of the project.
 * @param computeRegion - Region name.
 * @param productId - Id of the product.
 * @param referenceImageId - Id of the image.
 * @throws IOException - on I/O errors.
 */
public static void getReferenceImage(
    String projectId, String computeRegion, String productId, String referenceImageId)
    throws IOException {
  try (ProductSearchClient client = ProductSearchClient.create()) {

    // Get the full path of the reference image.
    String formattedName =
        ImageName.format(projectId, computeRegion, productId, referenceImageId);
    // Get complete detail of the reference image.
    ReferenceImage image = client.getReferenceImage(formattedName);
    // Display the reference image information.
    System.out.println(String.format("Reference image name: %s", image.getName()));
    System.out.println(
        String.format(
            "Reference image id: %s",
            image.getName().substring(image.getName().lastIndexOf('/') + 1)));
    System.out.println(String.format("Reference image uri: %s", image.getUri()));
    System.out.println(
        String.format(
            "Reference image bounding polygons: %s \n", image.getBoundingPolysList().toString()));
  }
}

Node.js

const vision = require('@google-cloud/vision');

const client = new vision.ProductSearchClient();

async function getReferenceImage() {
  /**
   * TODO(developer): Uncomment the following line before running the sample.
   */
  // const projectId = 'Your Google Cloud project Id';
  // const location = 'A compute region name';
  // const productId = 'Id of the product';
  // const referenceImageId = 'Id of the reference image';

  const formattedName = client.referenceImagePath(
    projectId,
    location,
    productId,
    referenceImageId
  );

  const request = {
    name: formattedName,
  };

  const response = await client.getReferenceImage(request);
  console.log(`response.name: ${response.name}`);
  console.log(`response.uri: ${response.uri}`);
}
getReferenceImage();

Python

from google.cloud import vision

def get_reference_image(
        project_id, location, product_id, reference_image_id):
    """Get info about a reference image.
    Args:
        project_id: Id of the project.
        location: A compute region name.
        product_id: Id of the product.
        reference_image_id: Id of the reference image.
    """
    client = vision.ProductSearchClient()

    # Get the full path of the reference image.
    reference_image_path = client.reference_image_path(
        project=project_id, location=location, product=product_id,
        reference_image=reference_image_id)

    # Get complete detail of the reference image.
    image = client.get_reference_image(name=reference_image_path)

    # Display the reference image information.
    print('Reference image name: {}'.format(image.name))
    print('Reference image id: {}'.format(image.name.split('/')[-1]))
    print('Reference image uri: {}'.format(image.uri))
    print('Reference image bounding polygons: {}'.format(image.bounding_polys))

What's next

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