This page shows how to get started with the Cloud Client Libraries for the Vision API. Read more about the client libraries for Cloud APIs, including the older Google API Client Libraries, in Client Libraries Explained.
Install the client library
C++
See Setting up a C++ development environment for details about this client library's requirements and install dependencies.
C#
For more information, see Setting Up a C# Development Environment.
If you are using Visual Studio 2017 or higher, open nuget package manager window and type the following:Install-Package Google.Apis
If you are using .NET Core command-line interface tools to install your dependencies, run the following command:
dotnet add package Google.Apis
Go
For more information, see Setting Up a Go Development Environment.
go get cloud.google.com/go/vision/apiv1
Java
For more information, see Setting Up a Java Development Environment.
If you are using Maven, add
the following to your pom.xml
file. For more information about
BOMs, see The Google Cloud Platform Libraries BOM.
If you are using Gradle, add the following to your dependencies:
If you are using sbt, add the following to your dependencies:
If you're using Visual Studio Code, IntelliJ, or Eclipse, you can add client libraries to your project using the following IDE plugins:
The plugins provide additional functionality, such as key management for service accounts. Refer to each plugin's documentation for details.
Node.js
For more information, see Setting Up a Node.js Development Environment.
npm install --save @google-cloud/vision
PHP
For more information, see Using PHP on Google Cloud.
composer require google/apiclient
Python
For more information, see Setting Up a Python Development Environment.
pip install --upgrade google-cloud-vision
Ruby
For more information, see Setting Up a Ruby Development Environment.
gem install google-api-client
Set up authentication
When you use client libraries, you use Application Default Credentials (ADC) to authenticate. For information about setting up ADC, see Provide credentials for Application Default Credentials. For information about using ADC with client libraries, see Authenticate using client libraries.
Use the client library
The following example shows how to use the client library.
C++
Before trying this sample, follow the C++ setup instructions in the Vision quickstart using client libraries.
To authenticate to Vision, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
Go
Before trying this sample, follow the Go setup instructions in the Vision quickstart using client libraries. For more information, see the Vision Go API reference documentation.
To authenticate to Vision, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
Java
Before trying this sample, follow the Java setup instructions in the Vision quickstart using client libraries. For more information, see the Vision Java API reference documentation.
To authenticate to Vision, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
Node.js
Before trying this sample, follow the Node.js setup instructions in the Vision quickstart using client libraries. For more information, see the Vision Node.js API reference documentation.
To authenticate to Vision, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
Python
Before trying this sample, follow the Python setup instructions in the Vision quickstart using client libraries. For more information, see the Vision Python API reference documentation.
To authenticate to Vision, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
Additional resources
C++
C#
Go
Java
Node.js
PHP
Python
Ruby
Additional client libraries
In addition to the libraries shown above, Spring Cloud Google Cloud is available for Java applications. Spring Vision API helps you use Cloud Vision in any application that's built with the Spring Framework.
To get started, learn how to add Spring Cloud Vision to your application.
Try it for yourself
If you're new to Google Cloud, create an account to evaluate how Cloud Vision API performs in real-world scenarios. New customers also get $300 in free credits to run, test, and deploy workloads.
Try Cloud Vision API free