Get the reference images.

Retrieve reference images.

Explore further

For detailed documentation that includes this code sample, see the following:

Code sample

Go

To learn how to install and use the client library for Vision API Product Search, see Vision API Product Search client libraries. For more information, see the Vision API Product Search Go API reference documentation.

To authenticate to Vision API Product Search, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


import (
	"context"
	"fmt"
	"io"

	vision "cloud.google.com/go/vision/apiv1"
	"cloud.google.com/go/vision/v2/apiv1/visionpb"
)

// 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: %w", 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: %w", 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

To learn how to install and use the client library for Vision API Product Search, see Vision API Product Search client libraries. For more information, see the Vision API Product Search Java API reference documentation.

To authenticate to Vision API Product Search, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

/**
 * 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

To learn how to install and use the client library for Vision API Product Search, see Vision API Product Search client libraries. For more information, see the Vision API Product Search Node.js API reference documentation.

To authenticate to Vision API Product Search, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

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

To learn how to install and use the client library for Vision API Product Search, see Vision API Product Search client libraries. For more information, see the Vision API Product Search Python API reference documentation.

To authenticate to Vision API Product Search, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

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(f"Reference image name: {image.name}")
    print("Reference image id: {}".format(image.name.split("/")[-1]))
    print(f"Reference image uri: {image.uri}")
    print(f"Reference image bounding polygons: {image.bounding_polys}")

What's next

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