管理模型

使用您提供的准备好的数据集训练模型。AutoML Video Intelligence 对象跟踪使用您数据集中的训练项来训练、测试和评估模型的性能。evaluate接着，您可以查看结果、根据需要调整训练数据集，并使用改进的数据集训练新模型。

训练模型可能需要几个小时才能完成。借助 AutoML API，您可以检查训练的状态。

您每次开始训练时，AutoML Video Intelligence 对象跟踪都会创建新模型，因此您的项目可能包含很多模型。您可以获取项目中模型的列表，也可以删除不再需要的模型。

模型的最长使用期限为两年。该时间期限过后，您必须创建并训练新模型，才能继续跟踪对象。

使用 curl 或 PowerShell

为了更方便地在本主题中运行 curl（或 PowerShell）示例，请设置以下环境变量。将 project-id 替换为您的 Google Cloud 项目的名称。

export PROJECT_ID="project-id"

训练模型

如果您有一个包含一组带标签的固定训练项的数据集，则可以创建和训练模型。

网页界面

  1. 打开 AutoML Video Object Tracking 界面，然后导航到数据集页面。

    Google Cloud 控制台中的“数据集”页面

  2. 选择要用于训练模型的数据集。

    所选数据集的显示名会显示在标题栏中，该页面还会列出数据集中的各个训练项及其标签。

    显示两个视频的“视频”标签

  3. 查看完数据集后，点击标题栏正下方的训练标签页。

    训练页面会提供对数据集的基本分析，并就其是否适合训练为您提供相关建议。如果 AutoML Video 对象跟踪建议更改，请考虑返回视频页面并添加内容或标签。

  4. 准备好数据集后，请点击开始训练以创建新模型，如果要创建其他模型，则可以点击训练新模型。

REST

在使用任何请求数据之前，请先进行以下替换：

  • dataset-id：目标数据集的名称。例如：my_dataset_01 显示名。
  • model-name：替换为您为模型选择的名称。
  • 注意：
    • project-number：您的项目编号
    • location-id：在其中添加注解的 Cloud 区域。支持的云区域为：us-east1、us-west1、europe-west1、asia-east1。如果未指定区域，系统将根据视频文件位置确定区域。

HTTP 方法和网址： 

POST https://automl.googleapis.com/v1beta1/projects/project-number/locations/location-id/models

请求 JSON 正文：

{
  "datasetId": "dataset-id",
  "displayName": "model-name",
  "videoObjectTrackingModelMetadata": {},
}

如需发送请求，请选择以下方式之一：

curl

将请求正文保存在名为 request.json 的文件中，然后执行以下命令： 

curl -X POST \
     -H "Authorization: Bearer $(gcloud auth print-access-token)" \
     -H "x-goog-user-project: project-number" \
     -H "Content-Type: application/json; charset=utf-8" \
     -d @request.json \
     "https://automl.googleapis.com/v1beta1/projects/project-number/locations/location-id/models"

PowerShell

将请求正文保存在名为 request.json 的文件中，然后执行以下命令： 

$cred = gcloud auth print-access-token
$headers = @{ "Authorization" = "Bearer $cred"; "x-goog-user-project" = "project-number" }

Invoke-WebRequest `
    -Method POST `
    -Headers $headers `
    -ContentType: "application/json; charset=utf-8" `
    -InFile request.json `
    -Uri "https://automl.googleapis.com/v1beta1/projects/project-number/locations/location-id/models" | Select-Object -Expand Content
您会收到模型训练操作的操作 ID。上面的示例显示了包含模型训练操作 ID VOT1741767155885539328 的响应。

Java

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

import com.google.api.gax.longrunning.OperationFuture;
import com.google.cloud.automl.v1beta1.AutoMlClient;
import com.google.cloud.automl.v1beta1.LocationName;
import com.google.cloud.automl.v1beta1.Model;
import com.google.cloud.automl.v1beta1.OperationMetadata;
import com.google.cloud.automl.v1beta1.VideoObjectTrackingModelMetadata;
import java.io.IOException;
import java.util.concurrent.ExecutionException;

class VideoObjectTrackingCreateModel {

  public static void main(String[] args)
      throws IOException, ExecutionException, InterruptedException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "YOUR_PROJECT_ID";
    String datasetId = "YOUR_DATASET_ID";
    String displayName = "YOUR_DATASET_NAME";
    createModel(projectId, datasetId, displayName);
  }

  // Create a model
  static void createModel(String projectId, String datasetId, String displayName)
      throws IOException, ExecutionException, InterruptedException {
    // 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 (AutoMlClient client = AutoMlClient.create()) {
      // A resource that represents Google Cloud Platform location.
      LocationName projectLocation = LocationName.of(projectId, "us-central1");
      // Set model metadata.
      VideoObjectTrackingModelMetadata metadata =
          VideoObjectTrackingModelMetadata.newBuilder().build();
      Model model =
          Model.newBuilder()
              .setDisplayName(displayName)
              .setDatasetId(datasetId)
              .setVideoObjectTrackingModelMetadata(metadata)
              .build();

      // Create a model with the model metadata in the region.
      OperationFuture<Model, OperationMetadata> future =
          client.createModelAsync(projectLocation, model);
      // OperationFuture.get() will block until the model is created, which may take several hours.
      // You can use OperationFuture.getInitialFuture to get a future representing the initial
      // response to the request, which contains information while the operation is in progress.
      System.out.format("Training operation name: %s%n", future.getInitialFuture().get().getName());
      System.out.println("Training started...");
    }
  }
}

Node.js

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const location = 'us-central1';
// const dataset_id = 'YOUR_DATASET_ID';
// const displayName = 'YOUR_DISPLAY_NAME';

// Imports the Google Cloud AutoML library
const {AutoMlClient} = require('@google-cloud/automl').v1beta1;

// Instantiates a client
const client = new AutoMlClient();

async function createModel() {
  // Construct request
  const request = {
    parent: client.locationPath(projectId, location),
    model: {
      displayName: displayName,
      datasetId: datasetId,
      videoObjectTrackingModelMetadata: {},
    },
  };

  // Don't wait for the LRO
  const [operation] = await client.createModel(request);
  console.log(`Training started... ${operation}`);
  console.log(`Training operation name: ${operation.name}`);
}

createModel();

Python

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

from google.cloud import automl_v1beta1 as automl


def create_model(
    project_id="YOUR_PROJECT_ID",
    dataset_id="YOUR_DATASET_ID",
    display_name="your_models_display_name",
):
    """Create a automl video classification model."""
    client = automl.AutoMlClient()

    # A resource that represents Google Cloud Platform loacation.
    project_location = f"projects/{project_id}/locations/us-central1"
    # Leave model unset to use the default base model provided by Google
    metadata = automl.VideoObjectTrackingModelMetadata()
    model = automl.Model(
        display_name=display_name,
        dataset_id=dataset_id,
        video_object_tracking_model_metadata=metadata,
    )

    # Create a model with the model metadata in the region.
    response = client.create_model(parent=project_location, model=model)

    print(f"Training operation name: {response.operation.name}")
    print("Training started...")

获取操作状态

如需检查长时间运行的任务（将训练项导入数据集或训练模型）的状态，您可以使用在开始执行该任务时所收到响应中的操作 ID。

REST

在使用任何请求数据之前，请先进行以下替换：

  • operation-id：是为请求创建的长时间运行的操作的 ID，并在启动操作时在响应中提供，例如VOT12345....
  • 注意：
    • project-number：您的项目编号
    • location-id：在其中添加注解的 Cloud 区域。支持的云区域为：us-east1、us-west1、europe-west1、asia-east1。如果未指定区域，系统将根据视频文件位置确定区域。

HTTP 方法和网址： 

GET https://automl.googleapis.com/v1beta1/projects/project-number/locations/location-id/operations/operation-id

如需发送请求，请选择以下方式之一：

curl

执行以下命令： 

curl -X GET \
     -H "Authorization: Bearer $(gcloud auth print-access-token)" \
     -H "x-goog-user-project: project-number" \
     "https://automl.googleapis.com/v1beta1/projects/project-number/locations/location-id/operations/operation-id"

PowerShell

执行以下命令： 

$cred = gcloud auth print-access-token
$headers = @{ "Authorization" = "Bearer $cred"; "x-goog-user-project" = "project-number" }

Invoke-WebRequest `
    -Method GET `
    -Headers $headers `
    -Uri "https://automl.googleapis.com/v1beta1/projects/project-number/locations/location-id/operations/operation-id" | Select-Object -Expand Content
导入操作可能需要一些时间才能完成。导入任务完成后，操作状态会显示 done: true，但不会列出任何错误，如上例所示。
  • operation-name：AutoML Video Intelligence 对象跟踪 API 返回的操作名称。操作名称采用 projects/project-number/locations/location-id/operations/operation-id 格式

Java

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

import com.google.cloud.automl.v1beta1.AutoMlClient;
import com.google.longrunning.Operation;
import java.io.IOException;

class GetOperationStatus {

  static void getOperationStatus() throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String operationFullId = "projects/[projectId]/locations/us-central1/operations/[operationId]";
    getOperationStatus(operationFullId);
  }

  // Get the status of an operation
  static void getOperationStatus(String operationFullId) throws IOException {
    // 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 (AutoMlClient client = AutoMlClient.create()) {
      // Get the latest state of a long-running operation.
      Operation operation = client.getOperationsClient().getOperation(operationFullId);

      // Display operation details.
      System.out.println("Operation details:");
      System.out.format("\tName: %s%n", operation.getName());
      System.out.format("\tMetadata Type Url: %s%n", operation.getMetadata().getTypeUrl());
      System.out.format("\tDone: %s%n", operation.getDone());
      if (operation.hasResponse()) {
        System.out.format("\tResponse Type Url: %s%n", operation.getResponse().getTypeUrl());
      }
      if (operation.hasError()) {
        System.out.println("\tResponse:");
        System.out.format("\t\tError code: %s%n", operation.getError().getCode());
        System.out.format("\t\tError message: %s%n", operation.getError().getMessage());
      }
    }
  }
}

Node.js

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const location = 'us-central1';
// const operationId = 'YOUR_OPERATION_ID';

// Imports the Google Cloud AutoML library
const {AutoMlClient} = require('@google-cloud/automl').v1beta1;

// Instantiates a client
const client = new AutoMlClient();

async function getOperationStatus() {
  // Construct request
  const request = {
    name: `projects/${projectId}/locations/${location}/operations/${operationId}`,
  };

  const [response] = await client.operationsClient.getOperation(request);

  console.log(`Name: ${response.name}`);
  console.log('Operation details:');
  console.log(response);
}

getOperationStatus();

Python

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

from google.cloud import automl_v1beta1 as automl


def get_operation_status(
    operation_full_id="projects/YOUR_PROJECT_ID/locations/us-central1/"
    "operations/YOUR_OPERATION_ID",
):
    """Get operation status."""
    client = automl.AutoMlClient()

    # Get the latest state of a long-running operation.
    response = client._transport.operations_client.get_operation(operation_full_id)

    print(f"Name: {response.name}")
    print("Operation details:")
    print(response)

取消操作

您可以使用操作 ID 取消导入、训练或批量预测任务。

REST

在使用任何请求数据之前，请先进行以下替换：

  • operation id：并在启动操作时在响应中提供，例如 VOT123
  • 注意：
    • project-id：您的 GCP 项目 ID
    • location-id：在其中添加注解的 Cloud 区域。支持的云区域为：us-east1、us-west1、europe-west1、asia-east1。如果未指定区域，系统将根据视频文件位置确定区域。

HTTP 方法和网址： 

POST https://automl.googleapis.com/v1beta1/projects/project-id/locations/location-id/operations/operation-id:cancel

如需发送您的请求，请展开以下选项之一：

您应该会收到一个成功的状态代码 (2xx) 和一个空响应。

Java

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 


import com.google.cloud.automl.v1beta1.AutoMlClient;
import io.grpc.StatusRuntimeException;
import java.io.IOException;

class CancelOperation {

  static void cancelOperation() throws IOException, InterruptedException, StatusRuntimeException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "YOUR_PROJECT_ID";
    String location = "us-central1";
    String operationId = "YOUR_OPERATION_ID";
    String operationFullId =
        String.format("projects/%s/locations/%s/operations/%s", projectId, location, operationId);
    cancelOperation(operationFullId);
  }

  static void cancelOperation(String operationFullId)
      throws IOException, InterruptedException, StatusRuntimeException {
    // 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 (AutoMlClient client = AutoMlClient.create()) {
      client.getOperationsClient().cancelOperation(operationFullId);
      System.out.println("Operation cancelled");
    }
  }
}

获取模型的相关信息

训练完成后，您可以获取有关新创建的模型的信息。

本部分中的示例返回模型的基本元数据。要获取有关模型准确率和就绪情况的详细信息，请参阅评估模型。

网页界面

  1. 前往 AutoML Video 对象跟踪界面中的模型页面。

    <img <="" alt="显示一个模型的模型页面" class="screenshot" li="" src="/static/video-intelligence/automl/object-tracking/docs/images/list_models.png" />
  2. 点击要查看的模型的名称。

REST

在使用任何请求数据之前，请先进行以下替换：

  • model-id：您的模型的 ID（从创建模型时返回的响应中获取）。ID 是模型名称的最后一个元素。例如：
    • 模型名称：projects/project-number/locations/location-id/models/model-id
    • 模型 ID：model-id
  • dataset-id：替换为数据集的数据集标识符（而不是显示名）。例如 VOT3940649673949184000
  • project-number：您项目的编号

HTTP 方法和网址： 

GET https://automl.googleapis.com/v1beta1/projects/project-id/locations/location-id/models/model-id

请求 JSON 正文：

{
  "displayName": "display-name",
  "dataset_id": "dataset-id",
  "videoClassificationModelMetadata": {}
}

如需发送您的请求，请展开以下选项之一：

您应该收到类似以下内容的 JSON 响应：

Java

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

import com.google.cloud.automl.v1beta1.AutoMlClient;
import com.google.cloud.automl.v1beta1.Model;
import com.google.cloud.automl.v1beta1.ModelName;
import io.grpc.StatusRuntimeException;
import java.io.IOException;

class GetModel {

  static void getModel() throws IOException, StatusRuntimeException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "YOUR_PROJECT_ID";
    String modelId = "YOUR_MODEL_ID";
    getModel(projectId, modelId);
  }

  // Get a model
  static void getModel(String projectId, String modelId)
      throws IOException, StatusRuntimeException {
    // 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 (AutoMlClient client = AutoMlClient.create()) {
      // Get the full path of the model.
      ModelName modelFullId = ModelName.of(projectId, "us-central1", modelId);
      Model model = client.getModel(modelFullId);

      // Display the model information.
      System.out.format("Model name: %s%n", model.getName());
      // To get the model id, you have to parse it out of the `name` field. As models Ids are
      // required for other methods.
      // Name Format: `projects/{project_id}/locations/{location_id}/models/{model_id}`
      String[] names = model.getName().split("/");
      String retrievedModelId = names[names.length - 1];
      System.out.format("Model id: %s%n", retrievedModelId);
      System.out.format("Model display name: %s%n", model.getDisplayName());
      System.out.println("Model create time:");
      System.out.format("\tseconds: %s%n", model.getCreateTime().getSeconds());
      System.out.format("\tnanos: %s%n", model.getCreateTime().getNanos());
      System.out.format("Model deployment state: %s%n", model.getDeploymentState());
    }
  }
}

Node.js

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const location = 'us-central1';
// const modelId = 'YOUR_MODEL_ID';

// Imports the Google Cloud AutoML library
const {AutoMlClient} = require('@google-cloud/automl').v1beta1;

// Instantiates a client
const client = new AutoMlClient();

async function getModel() {
  // Construct request
  const request = {
    name: client.modelPath(projectId, location, modelId),
  };

  const [response] = await client.getModel(request);

  console.log(`Model name: ${response.name}`);
  console.log(
    `Model id: ${
      response.name.split('/')[response.name.split('/').length - 1]
    }`
  );
  console.log(`Model display name: ${response.displayName}`);
  console.log('Model create time');
  console.log(`\tseconds ${response.createTime.seconds}`);
  console.log(`\tnanos ${response.createTime.nanos / 1e9}`);
  console.log(`Model deployment state: ${response.deploymentState}`);
}

getModel();

Python

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

from google.cloud import automl_v1beta1 as automl

# TODO(developer): Uncomment and set the following variables
# project_id = "YOUR_PROJECT_ID"
# model_id = "YOUR_MODEL_ID"

client = automl.AutoMlClient()
# Get the full path of the model.
model_full_id = client.model_path(project_id, "us-central1", model_id)
model = client.get_model(name=model_full_id)

# Retrieve deployment state.
if model.deployment_state == automl.Model.DeploymentState.DEPLOYED:
    deployment_state = "deployed"
else:
    deployment_state = "undeployed"

# Display the model information.
print(f"Model name: {model.name}")
print("Model id: {}".format(model.name.split("/")[-1]))
print(f"Model display name: {model.display_name}")
print(f"Model create time: {model.create_time}")
print(f"Model deployment state: {deployment_state}")

列出模型

一个项目可以包含许多模型。本部分介绍如何检索项目的可用模型列表。

网页界面

前往 AutoML Video 对象跟踪界面中的模型页面，查看您项目中的模型。

列表中含有一个模型的“模型”页面

如需查看其他项目的模型，请从标题栏右上角的下拉列表中选择该项目。

REST

在使用任何请求数据之前，请先进行以下替换：

  • project-number：您项目的编号
  • location-id：在其中添加注解的 Cloud 区域。支持的云区域为：us-east1、us-west1、europe-west1、asia-east1。如果未指定区域，系统将根据视频文件位置确定区域。

HTTP 方法和网址： 

GET https://automl.googleapis.com/v1beta1/projects/project-number/locations/location-id/models

如需发送您的请求，请展开以下选项之一：

您应该收到类似以下内容的 JSON 响应：

Java

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

import com.google.cloud.automl.v1beta1.AutoMlClient;
import com.google.cloud.automl.v1beta1.ListModelsRequest;
import com.google.cloud.automl.v1beta1.LocationName;
import com.google.cloud.automl.v1beta1.Model;
import java.io.IOException;

class ListModels {

  static void listModels() throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "YOUR_PROJECT_ID";
    listModels(projectId);
  }

  // List the models available in the specified location
  static void listModels(String projectId) throws IOException {
    // 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 (AutoMlClient client = AutoMlClient.create()) {
      // A resource that represents Google Cloud Platform location.
      LocationName projectLocation = LocationName.of(projectId, "us-central1");

      // Create list models request.
      ListModelsRequest listModelsRequest =
          ListModelsRequest.newBuilder()
              .setParent(projectLocation.toString())
              .setFilter("")
              .build();

      // List all the models available in the region by applying filter.
      System.out.println("List of models:");
      for (Model model : client.listModels(listModelsRequest).iterateAll()) {
        // Display the model information.
        System.out.format("Model name: %s%n", model.getName());
        // To get the model id, you have to parse it out of the `name` field. As models Ids are
        // required for other methods.
        // Name Format: `projects/{project_id}/locations/{location_id}/models/{model_id}`
        String[] names = model.getName().split("/");
        String retrievedModelId = names[names.length - 1];
        System.out.format("Model id: %s%n", retrievedModelId);
        System.out.format("Model display name: %s%n", model.getDisplayName());
        System.out.println("Model create time:");
        System.out.format("\tseconds: %s%n", model.getCreateTime().getSeconds());
        System.out.format("\tnanos: %s%n", model.getCreateTime().getNanos());
        System.out.format("Model deployment state: %s%n", model.getDeploymentState());
      }
    }
  }
}

Node.js

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const location = 'us-central1';

// Imports the Google Cloud AutoML library
const {AutoMlClient} = require('@google-cloud/automl').v1beta1;

// Instantiates a client
const client = new AutoMlClient();

async function listModels() {
  // Construct request
  const request = {
    parent: client.locationPath(projectId, location),
    filter: 'translation_model_metadata:*',
  };

  const [response] = await client.listModels(request);

  console.log('List of models:');
  for (const model of response) {
    console.log(`Model name: ${model.name}`);
    console.log(`
      Model id: ${model.name.split('/')[model.name.split('/').length - 1]}`);
    console.log(`Model display name: ${model.displayName}`);
    console.log('Model create time');
    console.log(`\tseconds ${model.createTime.seconds}`);
    console.log(`\tnanos ${model.createTime.nanos / 1e9}`);
    console.log(`Model deployment state: ${model.deploymentState}`);
  }
}

listModels();

Python

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

from google.cloud import automl_v1beta1 as automl

# TODO(developer): Uncomment and set the following variables
# project_id = "YOUR_PROJECT_ID"

client = automl.AutoMlClient()
# A resource that represents Google Cloud Platform location.
project_location = f"projects/{project_id}/locations/us-central1"
request = automl.ListModelsRequest(parent=project_location, filter="")
response = client.list_models(request=request)

print("List of models:")
for model in response:
    # Display the model information.
    if model.deployment_state == automl.Model.DeploymentState.DEPLOYED:
        deployment_state = "deployed"
    else:
        deployment_state = "undeployed"

    print(f"Model name: {model.name}")
    print("Model id: {}".format(model.name.split("/")[-1]))
    print(f"Model display name: {model.display_name}")
    print(f"Model create time: {model.create_time}")
    print(f"Model deployment state: {deployment_state}")

删除模型

以下示例演示了如何删除模型。

网页界面

  1. 前往 AutoML Video 对象跟踪界面中的模型页面。

    显示一个模型的“模型”页面
  2. 点击要删除的行最右侧的三点状菜单，然后选择删除。
  3. 在确认对话框中点击确认。

REST

在使用任何请求数据之前，请先进行以下替换：

  • project-number：您项目的编号
  • location-id：在其中添加注解的 Cloud 区域。支持的云区域为：us-east1、us-west1、europe-west1、asia-east1。如果未指定区域，系统将根据视频文件位置确定区域。
  • model-id：将替换为模型的标识符。

HTTP 方法和网址： 

DELETE https://automl.googleapis.com/v1beta1/projects/project-number/locations/location-id/models/model-id

如需发送您的请求，请展开以下选项之一：

您应该会收到一个成功的状态代码 (2xx) 和一个空响应。

Java

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

import com.google.cloud.automl.v1beta1.AutoMlClient;
import com.google.cloud.automl.v1beta1.ModelName;
import com.google.protobuf.Empty;
import java.io.IOException;
import java.util.concurrent.ExecutionException;

class DeleteModel {

  public static void main(String[] args)
      throws IOException, ExecutionException, InterruptedException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "YOUR_PROJECT_ID";
    String modelId = "YOUR_MODEL_ID";
    deleteModel(projectId, modelId);
  }

  // Delete a model
  static void deleteModel(String projectId, String modelId)
      throws IOException, ExecutionException, InterruptedException {
    // 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 (AutoMlClient client = AutoMlClient.create()) {
      // Get the full path of the model.
      ModelName modelFullId = ModelName.of(projectId, "us-central1", modelId);

      // Delete a model.
      Empty response = client.deleteModelAsync(modelFullId).get();

      System.out.println("Model deletion started...");
      System.out.println(String.format("Model deleted. %s", response));
    }
  }
}

Node.js

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const location = 'us-central1';
// const modelId = 'YOUR_MODEL_ID';

// Imports the Google Cloud AutoML library
const {AutoMlClient} = require('@google-cloud/automl').v1beta1;

// Instantiates a client
const client = new AutoMlClient();

async function deleteModel() {
  // Construct request
  const request = {
    name: client.modelPath(projectId, location, modelId),
  };

  const [response] = await client.deleteModel(request);
  console.log(`Model deleted: ${response}`);
}

deleteModel();

Python

如需向 AutoML Video Object Tracking 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

from google.cloud import automl_v1beta1 as automl

# TODO(developer): Uncomment and set the following variables
# project_id = "YOUR_PROJECT_ID"
# model_id = "YOUR_MODEL_ID"

client = automl.AutoMlClient()
# Get the full path of the model.
model_full_id = client.model_path(project_id, "us-central1", model_id)
response = client.delete_model(name=model_full_id)

print(f"Model deleted. {response.result()}")