建立參考圖片

建立參考圖像。

深入探索

如需包含這個程式碼範例的詳細說明文件，請參閱下列文章：

程式碼範例

Go

在試用這個範例之前，請先按照「使用用戶端程式庫的 Vision 快速入門導覽課程」中的 Go 設定說明操作。詳情請參閱 Vision Go API 參考文件。

如要向 Vision 進行驗證，請設定應用程式預設憑證。詳情請參閱「為本機開發環境設定驗證機制」。


import (
	"context"
	"fmt"
	"io"

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

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

	req := &visionpb.CreateReferenceImageRequest{
		Parent: fmt.Sprintf("projects/%s/locations/%s/products/%s", projectID, location, productID),
		ReferenceImage: &visionpb.ReferenceImage{
			Uri: gcsURI,
		},
		ReferenceImageId: referenceImageID,
	}

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

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

	return nil
}

Java

在試用這個範例之前，請先按照「使用用戶端程式庫的 Vision 快速入門導覽課程」中的 Java 設定說明操作。詳情請參閱 Vision Java API 參考文件。

如要向 Vision 進行驗證，請設定應用程式預設憑證。詳情請參閱「為本機開發環境設定驗證機制」。

/**
 * Create 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.
 * @param gcsUri - Google Cloud Storage path of the input image.
 * @throws IOException - on I/O errors.
 */
public static void createReferenceImage(
    String projectId,
    String computeRegion,
    String productId,
    String referenceImageId,
    String gcsUri)
    throws IOException {
  try (ProductSearchClient client = ProductSearchClient.create()) {

    // Get the full path of the product.
    String formattedParent = ProductName.format(projectId, computeRegion, productId);
    // Create a reference image.
    ReferenceImage referenceImage = ReferenceImage.newBuilder().setUri(gcsUri).build();

    ReferenceImage image =
        client.createReferenceImage(formattedParent, referenceImage, referenceImageId);
    // Display the reference image information.
    System.out.println(String.format("Reference image name: %s", image.getName()));
    System.out.println(String.format("Reference image uri: %s", image.getUri()));
  }
}

Node.js

在試用這個範例之前，請先按照「使用用戶端程式庫的 Vision 快速入門導覽課程」中的 Node.js 設定說明操作。詳情請參閱 Vision Node.js API 參考文件。

如要向 Vision 進行驗證，請設定應用程式預設憑證。詳情請參閱「為本機開發環境設定驗證機制」。

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

const client = new vision.ProductSearchClient();

async function createReferenceImage() {
  /**
   * 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 gcsUri = 'Google Cloud Storage path of the input image';

  const formattedParent = client.productPath(projectId, location, productId);

  const referenceImage = {
    uri: gcsUri,
  };

  const request = {
    parent: formattedParent,
    referenceImage: referenceImage,
    referenceImageId: referenceImageId,
  };

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

Python

在試用這個範例之前，請先按照「使用用戶端程式庫的 Vision 快速入門導覽課程」中的 Python 設定說明操作。詳情請參閱 Vision Python API 參考文件。

如要向 Vision 進行驗證，請設定應用程式預設憑證。詳情請參閱「為本機開發環境設定驗證機制」。

from google.cloud import vision

def create_reference_image(
    project_id, location, product_id, reference_image_id, gcs_uri
):
    """Create 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.
        gcs_uri: Google Cloud Storage path of the input image.
    """
    client = vision.ProductSearchClient()

    # Get the full path of the product.
    product_path = client.product_path(
        project=project_id, location=location, product=product_id
    )

    # Create a reference image.
    reference_image = vision.ReferenceImage(uri=gcs_uri)

    # The response is the reference image with `name` populated.
    image = client.create_reference_image(
        parent=product_path,
        reference_image=reference_image,
        reference_image_id=reference_image_id,
    )

    # Display the reference image information.
    print(f"Reference image name: {image.name}")
    print(f"Reference image uri: {image.uri}")

後續步驟

如要搜尋及篩選其他 Google Cloud 產品的程式碼範例，請參閱Google Cloud 範例瀏覽工具。