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Color Recognition

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This topic provides code examples for color recognition in multiple programming languages.

Note

  • For real-time assistance, start an online consultation.

  • If you have questions about API access or usage for the Alibaba Cloud Vision AI Platform, join our DingTalk group (ID: 23109592) to contact us.

Feature overview

For an overview of the color recognition feature and its API parameters, see Color Recognition.

SDK installation

For information about the SDK dependencies for common programming languages, see the SDK overview.

Configure environment variables

Configure the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables.

Important

  • An Alibaba Cloud account has full access to all API operations. We recommend that you use a RAM user for API calls or routine O&M. For more information, see Create a RAM user.

  • Do not save your AccessKey ID or AccessKey Secret in project code. Otherwise, the AccessKey pair may be leaked and the security of all resources in your account may be compromised.

  • Configure environment variables on Linux and macOS

    1. Open a terminal in IntelliJ IDEA.

    2. Run the following commands to configure the environment variables.

      Replace <access_key_id> with the AccessKey ID of your RAM user and <access_key_secret> with the AccessKey Secret of your RAM user. If you need to configure more permissions, see Control access permissions using a RAM policy.

      export ALIBABA_CLOUD_ACCESS_KEY_ID=<access_key_id>
export ALIBABA_CLOUD_ACCESS_KEY_SECRET=<access_key_secret>

  • Configure environment variables on Windows

    Create a new environment variable file, add the environment variables ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET, and set them to the AccessKey ID and AccessKey Secret that you have prepared. Then, restart the Windows operating system. The following example uses Windows 10.

    1. Open File Explorer, right-click This PC, and then select Properties.

    2. In the left-side navigation pane, click Advanced system settings.

    3. On the Advanced tab of the System Properties dialog box, click Environment Variables.

    4. In the Environment Variables dialog box, click New.

    5. In the New System Variable dialog box, add the environment variables ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET, and set them to the AccessKey ID and AccessKey Secret that you have prepared.

    6. Restart the Windows operating system for the configurations to take effect.

Sample code

File in OSS (Shanghai)

/*
Import the required dependency package.
<!-- https://mvnrepository.com/artifact/com.aliyun/imagerecog20190930 -->
<dependency>
      <groupId>com.aliyun</groupId>
      <artifactId>imagerecog20190930</artifactId>
      <version>${aliyun.imagerecog.version}</version>
</dependency>
*/

import com.aliyun.imagerecog20190930.models.RecognizeImageColorResponse;
import com.aliyun.tea.TeaException;
import com.aliyun.tea.TeaModel;

public class RecognizeImageColor {

    public static com.aliyun.imagerecog20190930.Client createClient(String accessKeyId, String accessKeySecret) throws Exception {
        /*
          Initialize the configuration object com.aliyun.teaopenapi.models.Config.
          This object stores your configuration, including the AccessKey ID, AccessKey Secret, and endpoint.
         */
         com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config()
                .setAccessKeyId(accessKeyId)
                .setAccessKeySecret(accessKeySecret);
        // The endpoint of the service.
        config.endpoint = "imagerecog.cn-shanghai.aliyuncs.com";
        return new com.aliyun.imagerecog20190930.Client(config);
    }

    public static void main(String[] args) throws Exception {
        // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
        // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
        // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.
        String accessKeyId = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
        String accessKeySecret = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"); 
        com.aliyun.imagerecog20190930.Client client = RecognizeImageColor.createClient(accessKeyId, accessKeySecret);
        com.aliyun.imagerecog20190930.models.RecognizeImageColorRequest recognizeImageColorRequest = new com.aliyun.imagerecog20190930.models.RecognizeImageColorRequest()
                .setUrl("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg")
                .setColorCount(3);
        com.aliyun.teautil.models.RuntimeOptions runtime = new com.aliyun.teautil.models.RuntimeOptions();
        try {
            // Call the API and print the response.
            RecognizeImageColorResponse response = client.recognizeImageColorWithOptions(recognizeImageColorRequest, runtime);
            System.out.println(com.aliyun.teautil.Common.toJSONString(TeaModel.buildMap(response)));
        } catch (TeaException error) {
            // Get the full error message.
            System.out.println(com.aliyun.teautil.Common.toJSONString(error));
            // Get a specific field.
            System.out.println(error.getCode());
        }
    }
}
# -*- coding: utf-8 -*-
# Import the required dependency package.
# pip install alibabacloud_imagerecog20190930

import os
from alibabacloud_imagerecog20190930.client import Client
from alibabacloud_imagerecog20190930.models import RecognizeImageColorRequest
from alibabacloud_tea_openapi.models import Config
from alibabacloud_tea_util.models import RuntimeOptions

config = Config(
  # To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
  # If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  # Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.
  access_key_id=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_ID'),
  access_key_secret=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_SECRET'),
  # The endpoint of the service.
  endpoint='imagerecog.cn-shanghai.aliyuncs.com',
  # The ID of the region where the endpoint resides.
  region_id='cn-shanghai'
)
recognize_image_color_request = RecognizeImageColorRequest(
    url='http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg',
    color_count=3
)
runtime = RuntimeOptions()
try:
  # Initialize the client.
  client = Client(config)
  response = client.recognize_image_color_with_options(recognize_image_color_request, runtime)
  # Get the full response.
  print(response.body)
except Exception as error:
  # Get the full error message.
  print(error)
  # Get a specific field.
  print(error.code)
<?php

// Install the required dependency package.
// composer require alibabacloud/imagerecog-20190930

use AlibabaCloud\SDK\Imagerecog\V20190930\Imagerecog;
use \Exception;
use AlibabaCloud\Tea\Utils\Utils;
use Darabonba\OpenApi\Models\Config;
use AlibabaCloud\SDK\Imagerecog\V20190930\Models\RecognizeImageColorRequest;
use AlibabaCloud\Tea\Utils\Utils\RuntimeOptions;

class RecognizeImageColor {

    /**
     * Initialize the client with the AccessKey ID and AccessKey Secret.
     * @param string $accessKeyId
     * @param string $accessKeySecret
     * @return Imagerecog Client
     */
    public static function createClient($accessKeyId, $accessKeySecret){
        // Initialize the configuration object Darabonba\OpenApi\Models\Config.
        // This object stores your configuration, including the AccessKey ID, AccessKey Secret, and endpoint.
        $config = new Config([
            "accessKeyId" => $accessKeyId,
            "accessKeySecret" => $accessKeySecret
        ]);
        // The endpoint of the service.
        $config->endpoint = "imagerecog.cn-shanghai.aliyuncs.com";
        return new Imagerecog($config);
    }

    /**
     * @param string[] $args
     * @return void
     */
    public static function main($args){
        // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
        // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
        // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.    
        $accessKeyId = getenv('ALIBABA_CLOUD_ACCESS_KEY_ID');      
        $accessKeySecret = getenv('ALIBABA_CLOUD_ACCESS_KEY_SECRET');
        $client = self::createClient($accessKeyId, $accessKeySecret);
        $recognizeImageColorRequest = new RecognizeImageColorRequest([
            "url" => "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg",
            "colorCount" => 3
        ]);
        $runtime = new RuntimeOptions([]);
        try {
            $resp = $client->recognizeImageColorWithOptions($recognizeImageColorRequest, $runtime);
            # Get the full response.
            echo Utils::toJSONString($resp->body);
        } catch (Exception $exception) {
            # Get the full error message.
            echo Utils::toJSONString($exception);
            # Get a specific field.
            echo $exception->getCode();
        }
    }
}
$path = __DIR__ . \DIRECTORY_SEPARATOR . '..' . \DIRECTORY_SEPARATOR . 'vendor' . \DIRECTORY_SEPARATOR . 'autoload.php';
if (file_exists($path)) {
    require_once $path;
}
// $argv is a reserved array for input parameters. You do not need to modify it.
RecognizeImageColor::main(array_slice($argv, 1));
// Install the required dependency package.
// npm install @alicloud/imagerecog20190930
const ImagerecogClient = require('@alicloud/imagerecog20190930');
const OpenapiClient = require('@alicloud/openapi-client');
const TeaUtil = require('@alicloud/tea-util');

let config = new OpenapiClient.Config({
  // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
  // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables. 
  accessKeyId: process.env.ALIBABA_CLOUD_ACCESS_KEY_ID,   
  accessKeySecret: process.env.ALIBABA_CLOUD_ACCESS_KEY_SECRET
});
// The endpoint of the service.
config.endpoint = `imagerecog.cn-shanghai.aliyuncs.com`;
const client = new ImagerecogClient.default(config);
let recognizeImageColorRequest = new ImagerecogClient.RecognizeImageColorRequest({
  colorCount: 3,
  url: "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg",
});
let runtime = new TeaUtil.RuntimeOptions({ });
client.recognizeImageColorWithOptions(recognizeImageColorRequest, runtime)
  .then(function(recognizeImageColorResponse) {
    // Get the full response.
    console.log(recognizeImageColorResponse);
    // Get a specific field.
    console.log(recognizeImageColorResponse.body.data);
  }, function(error) {
    // Get the full error message.
    console.log(error);
    // Get a specific field.
    console.log(error.data.Code);
  })
/**
Use `go mod tidy` to install the dependency.
*/
package main

import (
	"fmt"
	openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
	imagerecog20190930 "github.com/alibabacloud-go/imagerecog-20190930/v2/client"
	util "github.com/alibabacloud-go/tea-utils/v2/service"
	"github.com/alibabacloud-go/tea/tea"
)

func main() {  
  // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
  // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.  
  accessKeyId := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_ID")  
  accessKeySecret := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET")
  // Initialize the configuration object &openapi.Config. This object stores your configuration, including the AccessKey ID, AccessKey Secret, and endpoint.
  config := &openapi.Config{
    AccessKeyId: tea.String(accessKeyId),
    AccessKeySecret: tea.String(accessKeySecret)
	}
	// The endpoint of the service.
	config.Endpoint = tea.String("imagerecog.cn-shanghai.aliyuncs.com")
	client, err := imagerecog20190930.NewClient(config)
	if err != nil {
		fmt.Println(err.Error())
	}

	recognizeImageColorRequest := &imagerecog20190930.RecognizeImageColorRequest{
		Url:        tea.String("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg"),
		ColorCount: tea.Int32(3),
	}
	runtime := &util.RuntimeOptions{}
	recognizeImageColorResponse, _err := client.RecognizeImageColorWithOptions(recognizeImageColorRequest, runtime)
	if _err != nil {
		fmt.Println(_err.Error())
	} else {
		// Get the full response.
		fmt.Println(recognizeImageColorResponse)
		// Get a specific field.
		fmt.Println(recognizeImageColorResponse.Body.Data)
	}
}
// Install the required dependency package.
// dotnet add package AlibabaCloud.SDK.Imagerecog20190930
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Threading.Tasks;
using AlibabaCloud.SDK.Imagerecog20190930.Models;
using Tea;
using Tea.Utils;

namespace AlibabaCloud.SDK.Sample
{
    public class Sample
    {
        /**
            * Initialize the client with the AccessKey ID and AccessKey Secret.
            * @param accessKeyId
            * @param accessKeySecret
            * @return Client
            * @throws Exception
        */
        public static AlibabaCloud.SDK.Imagerecog20190930.Client CreateClient(string accessKeyId, string accessKeySecret)
        {
            AlibabaCloud.OpenApiClient.Models.Config config = new AlibabaCloud.OpenApiClient.Models.Config
            {
                AccessKeyId = accessKeyId,
                AccessKeySecret = accessKeySecret,
            };
            // The endpoint of the service.
            config.Endpoint = "imagerecog.cn-shanghai.aliyuncs.com";
            return new AlibabaCloud.SDK.Imagerecog20190930.Client(config);
        }
        public static void Main(string[] args)
        {
            // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
            // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
            // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.
            AlibabaCloud.SDK.Imagerecog20190930.Client client = CreateClient(System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_ID"), System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_SECRET"));
            AlibabaCloud.SDK.Imagerecog20190930.Models.RecognizeImageColorRequest recognizeImageColorRequest = new AlibabaCloud.SDK.Imagerecog20190930.Models.RecognizeImageColorRequest
            {
                ColorCount = 3,
                Url = "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg",
            };
            AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();
            try
            {
                AlibabaCloud.SDK.Imagerecog20190930.Models.RecognizeImageColorResponse recognizeImageColorResponse = client.RecognizeImageColorWithOptions(recognizeImageColorRequest, runtime);
                // Get the full response.
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizeImageColorResponse.Body));
                // Get a specific field.
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizeImageColorResponse.Body.Data));
            }
            catch (TeaException error)
            {
                AlibabaCloud.TeaUtil.Common.AssertAsString(error.Message);
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
                {
                    { "message", _error.Message }
                });
                Console.WriteLine(error.Message);
            }
        }
    }
}

Local file or accessible URL

/*
Import the required dependency package.
<!-- https://mvnrepository.com/artifact/com.aliyun/imagerecog20190930 -->
<dependency>
      <groupId>com.aliyun</groupId>
      <artifactId>imagerecog20190930</artifactId>
      <version>${aliyun.imagerecog.version}</version>
</dependency>
*/

import com.aliyun.imagerecog20190930.models.RecognizeImageColorResponse;
import com.aliyun.tea.TeaException;
import com.aliyun.tea.TeaModel;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.URL;

public class RecognizeImageColor {

    public static com.aliyun.imagerecog20190930.Client createClient(String accessKeyId, String accessKeySecret) throws Exception {
        /*
          Initialize the configuration object com.aliyun.teaopenapi.models.Config.
          This object stores your configuration, including the AccessKey ID, AccessKey Secret, and endpoint.
         */
         com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config()
                .setAccessKeyId(accessKeyId)
                .setAccessKeySecret(accessKeySecret);
        // The endpoint of the service.
        config.endpoint = "imagerecog.cn-shanghai.aliyuncs.com";
        return new com.aliyun.imagerecog20190930.Client(config);
    }

    public static void main(String[] args) throws Exception {
        // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
        // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
        // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.
        String accessKeyId = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
        String accessKeySecret = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"); 
        com.aliyun.imagerecog20190930.Client client = RecognizeImageColor.createClient(accessKeyId, accessKeySecret);
        // Scenario 1: Use a local file.
        //InputStream inputStream = new FileInputStream(new File("/tmp/RecognizeImageColor1.jpg"));
        // Scenario 2: Use an image from an accessible URL.
        URL url = new URL("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg");
        InputStream inputStream = url.openConnection().getInputStream();
        com.aliyun.imagerecog20190930.models.RecognizeImageColorAdvanceRequest recognizeImageColorAdvanceRequest = new com.aliyun.imagerecog20190930.models.RecognizeImageColorAdvanceRequest()
                .setUrlObject(inputStream)
                .setColorCount(3);
        com.aliyun.teautil.models.RuntimeOptions runtime = new com.aliyun.teautil.models.RuntimeOptions();
        try {
            // Call the API and print the response.
            RecognizeImageColorResponse response = client.recognizeImageColorAdvance(recognizeImageColorAdvanceRequest, runtime);
            System.out.println(com.aliyun.teautil.Common.toJSONString(TeaModel.buildMap(response)));
        } catch (TeaException error) {
            // Get the full error message.
            System.out.println(com.aliyun.teautil.Common.toJSONString(error));
            // Get a specific field.
            System.out.println(error.getCode());
        }
    }
}
# -*- coding: utf-8 -*-
# Import the required dependency package.
# pip install alibabacloud_imagerecog20190930

import os
import io
from urllib.request import urlopen
from alibabacloud_imagerecog20190930.client import Client
from alibabacloud_imagerecog20190930.models import RecognizeImageColorAdvanceRequest
from alibabacloud_tea_openapi.models import Config
from alibabacloud_tea_util.models import RuntimeOptions

config = Config(
  # To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
  # If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  # Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.
  access_key_id=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_ID'),
  access_key_secret=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_SECRET'),
  # The endpoint of the service.
  endpoint='imagerecog.cn-shanghai.aliyuncs.com',
  # The ID of the region where the endpoint resides.
  region_id='cn-shanghai'
)
# Scenario 1: Use a local file.
#stream = open(r'/tmp/RecognizeImageColor1.jpg', 'rb')
# Scenario 2: Use an image from an accessible URL.
url = 'http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg'
img = urlopen(url).read()
recognize_image_color_request = RecognizeImageColorAdvanceRequest(
    # Scenario 1: Use a local file.
    #url_object=stream,
    url_object=io.BytesIO(img),
    color_count=3
)
runtime = RuntimeOptions()
try:
  # Initialize the client.
  client = Client(config)
  response = client.recognize_image_color_advance(recognize_image_color_request, runtime)
  # Get the full response.
  print(response.body)
except Exception as error:
  # Get the full error message.
  print(error)
  # Get a specific field.
  print(error.code)

# If you use a local file (Scenario 1), uncomment the following line to close the stream.
#stream.close()
<?php

// Install the required dependency package.
// composer require alibabacloud/imagerecog-20190930

use AlibabaCloud\SDK\Imagerecog\V20190930\Imagerecog;
use \Exception;
use AlibabaCloud\Tea\Utils\Utils;
use Darabonba\OpenApi\Models\Config;
use AlibabaCloud\SDK\Imagerecog\V20190930\Models\RecognizeImageColorAdvanceRequest;
use AlibabaCloud\Tea\Utils\Utils\RuntimeOptions;
use GuzzleHttp\Psr7\Stream;

class RecognizeImageColorAdvance {

    /**
     * Initialize the client with the AccessKey ID and AccessKey Secret.
     * @param string $accessKeyId
     * @param string $accessKeySecret
     * @return Imagerecog Client
     */
    public static function createClient($accessKeyId, $accessKeySecret){
        // Initialize the configuration object Darabonba\OpenApi\Models\Config.
        // This object stores your configuration, including the AccessKey ID, AccessKey Secret, and endpoint.
        $config = new Config([
            "accessKeyId" => $accessKeyId,
            "accessKeySecret" => $accessKeySecret
        ]);
        // The endpoint of the service.
        $config->endpoint = "imagerecog.cn-shanghai.aliyuncs.com";
        return new Imagerecog($config);
    }

    /**
     * @param string[] $args
     * @return void
     */
    public static function main($args){
        // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
        // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
        // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.
        $accessKeyId = getenv('ALIBABA_CLOUD_ACCESS_KEY_ID');
        $accessKeySecret = getenv('ALIBABA_CLOUD_ACCESS_KEY_SECRET'); 
        $client = self::createClient($accessKeyId, $accessKeySecret);
        // Scenario 1: Use a local file.
        //$file = fopen('/tmp/RecognizeImageColor1.jpg', 'rb');
        //$stream = new Stream($file);
        // Scenario 2: Use an image from an accessible URL.
        $file = fopen('http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg', 'rb');
        $stream = new Stream($file);
        $recognizeImageColorAdvanceRequest = new RecognizeImageColorAdvanceRequest([
            "urlObject" => $stream,
            "colorCount" => 3
        ]);
        $runtime = new RuntimeOptions([]);
        try {
            $resp = $client->recognizeImageColorAdvance($recognizeImageColorAdvanceRequest, $runtime);
            # Get the full response.
            echo Utils::toJSONString($resp->body);
        } catch (Exception $exception) {
            # Get the full error message.
            echo Utils::toJSONString($exception);
            # Get a specific field.
            echo $exception->getCode();
        }
    }
}
$path = __DIR__ . \DIRECTORY_SEPARATOR . '..' . \DIRECTORY_SEPARATOR . 'vendor' . \DIRECTORY_SEPARATOR . 'autoload.php';
if (file_exists($path)) {
    require_once $path;
}
// $argv is a reserved array for input parameters. You do not need to modify it.
RecognizeImageColorAdvance::main(array_slice($argv, 1));
// Install the required dependency package.
// npm install @alicloud/imagerecog20190930
const ImagerecogClient = require('@alicloud/imagerecog20190930');
const OpenapiClient = require('@alicloud/openapi-client');
const TeaUtil = require('@alicloud/tea-util');
const fs = require('fs');
const http = require('http');
const https = require('https');

let config = new OpenapiClient.Config({
  // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
  // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables. 
  accessKeyId: process.env.ALIBABA_CLOUD_ACCESS_KEY_ID,   
  accessKeySecret: process.env.ALIBABA_CLOUD_ACCESS_KEY_SECRET
});
// The endpoint of the service.
config.endpoint = `imagerecog.cn-shanghai.aliyuncs.com`;
const client = new ImagerecogClient.default(config);
const getResponse = function (httpClient, url) {
  return new Promise((resolve, reject) => {
    httpClient.get(url, function (response) {
      resolve(response);
    })
  })
}
const request = async function () {
  try {
    let recognizeImageColorAdvanceRequest = new ImagerecogClient.RecognizeImageColorAdvanceRequest();
    // Scenario 1: Use a local file.
    // const fileStream = fs.createReadStream('/tmp/RecognizeImageColor1.jpg');
    // recognizeImageColorAdvanceRequest.urlObject = fileStream;
    // Scenario 2: Use an image from an accessible URL.
    const url = new URL("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg");
    const httpClient = (url.protocol == "https:") ? https : http;
    recognizeImageColorAdvanceRequest.urlObject = await getResponse(httpClient, url);  
    let runtime = new TeaUtil.RuntimeOptions({});
    client.recognizeImageColorAdvance(recognizeImageColorAdvanceRequest, runtime)
      .then(function (recognizeImageColorResponse) {
        // Get the full response.
        console.log(recognizeImageColorResponse);
        // Get a specific field.
        console.log(recognizeImageColorResponse.body.data);
      }, function (error) {
        // Get the full error message.
        console.log(error);
        // Get a specific field.
        console.log(error.data.Code);
      })
  } catch (error) {
    console.log(error);
  }
}();
/**
Use `go mod tidy` to install the dependency.
*/
package main

import (
	"fmt"
	openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
	imagerecog20190930 "github.com/alibabacloud-go/imagerecog-20190930/v2/client"
	util "github.com/alibabacloud-go/tea-utils/v2/service"
	"github.com/alibabacloud-go/tea/tea"
	"net/http"
)

func main() { 
  // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
  // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.  
  accessKeyId := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_ID")  
  accessKeySecret := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET")
  // Initialize the configuration object &openapi.Config. This object stores your configuration, including the AccessKey ID, AccessKey Secret, and endpoint.
  config := &openapi.Config{
    AccessKeyId: tea.String(accessKeyId),
    AccessKeySecret: tea.String(accessKeySecret)
	}
	// The endpoint of the service.
	config.Endpoint = tea.String("imagerecog.cn-shanghai.aliyuncs.com")
	client, err := imagerecog20190930.NewClient(config)
	if err != nil {
		fmt.Println(err.Error())
	}

	// Scenario 1: Use a local file.
	//file, err := os.Open("/tmp/RecognizeImageColor1.jpg")
	//if err != nil {
	//	fmt.Println("can not open file", err)
	//}
	//recognizeImageColorAdvanceRequest := &imagerecog20190930.RecognizeImageColorAdvanceRequest{
	//	UrlObject:  file,
	//	ColorCount: tea.Int32(3),
	//}
	// Scenario 2: Use an image from an accessible URL.
	httpClient := http.Client{}
	file1, _ := httpClient.Get("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg")
	recognizeImageColorAdvanceRequest := &imagerecog20190930.RecognizeImageColorAdvanceRequest{
		UrlObject:  file1.Body,
		ColorCount: tea.Int32(3),
	}
	runtime := &util.RuntimeOptions{}
	recognizeImageColorResponse, _err := client.RecognizeImageColorAdvance(recognizeImageColorAdvanceRequest, runtime)
	if _err != nil {
		fmt.Println(_err.Error())
	} else {
		// Get the full response.
		fmt.Println(recognizeImageColorResponse)
		// Get a specific field.
		fmt.Println(recognizeImageColorResponse.Body.Data)
	}
}
//  Install the required dependency package.
// dotnet add package AlibabaCloud.SDK.Imagerecog20190930
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Threading.Tasks;
using AlibabaCloud.SDK.Imagerecog20190930.Models;
using Tea;
using Tea.Utils;

namespace AlibabaCloud.SDK.Sample
{
    public class Sample
    {
        /**
            * Initialize the client with the AccessKey ID and AccessKey Secret.
            * @param accessKeyId
            * @param accessKeySecret
            * @return Client
            * @throws Exception
        */
        public static AlibabaCloud.SDK.Imagerecog20190930.Client CreateClient(string accessKeyId, string accessKeySecret)
        {
            AlibabaCloud.OpenApiClient.Models.Config config = new AlibabaCloud.OpenApiClient.Models.Config
            {
                AccessKeyId = accessKeyId,
                AccessKeySecret = accessKeySecret,
            };
            // The endpoint of the service.
            config.Endpoint = "imagerecog.cn-shanghai.aliyuncs.com";
            return new AlibabaCloud.SDK.Imagerecog20190930.Client(config);
        }
        public static void Main(string[] args)
        {
            // To create an AccessKey ID and AccessKey Secret, see https://help.aliyun.com/document_detail/175144.html.
            // If you use the AccessKey of a RAM user, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
            // Read the AccessKey ID and AccessKey Secret from the environment variables. Before you run the sample code, make sure that you have configured the environment variables.
            AlibabaCloud.SDK.Imagerecog20190930.Client client = CreateClient(System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_ID"), System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_SECRET"));
            AlibabaCloud.SDK.Imagerecog20190930.Models.RecognizeImageColorAdvanceRequest recognizeImageColorAdvanceRequest = new AlibabaCloud.SDK.Imagerecog20190930.Models.RecognizeImageColorAdvanceRequest
            ();
            // Scenario 1: Use a local file.
            // System.IO.StreamReader file = new System.IO.StreamReader(@"/tmp/RecognizeImageColor1.jpg");
            // recognizeImageColorAdvanceRequest.UrlObject = file.BaseStream;
            // recognizeImageColorAdvanceRequest.ColorCount = 3;
            // Scenario 2: Use an image from an accessible URL.
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/imagerecog/RecognizeImageColor/RecognizeImageColor1.jpg");
            WebResponse response = request.GetResponse();
            Stream stream = response.GetResponseStream();
            recognizeImageColorAdvanceRequest.UrlObject = stream;
            recognizeImageColorAdvanceRequest.ColorCount = 3;
            AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();
            try
            {
                AlibabaCloud.SDK.Imagerecog20190930.Models.RecognizeImageColorResponse recognizeImageColorResponse = client.RecognizeImageColorAdvance(recognizeImageColorAdvanceRequest, runtime);
                // Get the full response.
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizeImageColorResponse.Body));
                // Get a specific field.
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizeImageColorResponse.Body.Data));
            }
            catch (TeaException error)
            {
                AlibabaCloud.TeaUtil.Common.AssertAsString(error.Message);
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
                {
                    { "message", _error.Message }
                });
                Console.WriteLine(error.Message);
            }
        }
    }
}
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