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General Character Recognition

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This document provides code samples for General Character Recognition in several 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.

Overview

See General Character Recognition for a functional overview and detailed descriptions of request parameters.

Install the SDK

See SDK Overview for information about SDK dependencies for common programming languages.

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

Image from OSS (Shanghai region)

/*
Add the SDK dependency.
<!-- https://mvnrepository.com/artifact/com.aliyun/ocr20191230 -->
<dependency>
      <groupId>com.aliyun</groupId>
      <artifactId>ocr20191230</artifactId>
      <version>${aliyun.ocr.version}</version>
</dependency>
*/

import com.aliyun.ocr20191230.models.RecognizeCharacterResponse;
import com.aliyun.tea.TeaException;
import com.aliyun.tea.TeaModel;

public class RecognizeCharacter {

    public static com.aliyun.ocr20191230.Client createClient(String accessKeyId, String accessKeySecret) throws Exception {
        /*
          Initialize the configuration object.
          It stores your AccessKey ID, AccessKey Secret, endpoint, and other configuration details.
         */
         com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config()
                .setAccessKeyId(accessKeyId)
                .setAccessKeySecret(accessKeySecret);
        // The service endpoint.
        config.endpoint = "ocr.cn-shanghai.aliyuncs.com";
        return new com.aliyun.ocr20191230.Client(config);
    }

    public static void main(String[] args) throws Exception {
        // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
        // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
        // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.
        String accessKeyId = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
        String accessKeySecret = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"); 
        com.aliyun.ocr20191230.Client client = RecognizeCharacter.createClient(accessKeyId, accessKeySecret);
        com.aliyun.ocr20191230.models.RecognizeCharacterRequest recognizeCharacterRequest = new com.aliyun.ocr20191230.models.RecognizeCharacterRequest()
                .setImageURL("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg")
                .setMinHeight(10)
                .setOutputProbability(true);
        com.aliyun.teautil.models.RuntimeOptions runtime = new com.aliyun.teautil.models.RuntimeOptions();
        try {
            // Call the API and print the response body as a JSON string.
            RecognizeCharacterResponse response = client.recognizeCharacterWithOptions(recognizeCharacterRequest, runtime);
            System.out.println(com.aliyun.teautil.Common.toJSONString(TeaModel.buildMap(response)));
        } catch (TeaException error) {
            // Handle exceptions by printing the error message.
            System.out.println(com.aliyun.teautil.Common.toJSONString(error));
            // You can also retrieve specific error fields from the exception.
            System.out.println(error.getCode());
        }
    }
}
# -*- coding: utf-8 -*-
# Add the SDK dependency.
# pip install alibabacloud_ocr20191230

import os
from alibabacloud_ocr20191230.client import Client
from alibabacloud_ocr20191230.models import RecognizeCharacterRequest
from alibabacloud_tea_openapi.models import Config
from alibabacloud_tea_util.models import RuntimeOptions

config = Config(
  # For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
  # If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  # Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.
  access_key_id=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_ID'),
  access_key_secret=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_SECRET'),
  # The service endpoint.
  endpoint='ocr.cn-shanghai.aliyuncs.com',
  # The region ID of the endpoint.
  region_id='cn-shanghai'
)
recognize_character_request = RecognizeCharacterRequest(
    image_url='http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg',
    min_height=10,
    output_probability=True
)
runtime = RuntimeOptions()
try:
  # Initialize the client.
  client = Client(config)
  response = client.recognize_character_with_options(recognize_character_request, runtime)
  # Call the API and print the response body.
  print(response.body)
except Exception as error:
  # Handle exceptions by printing the error message.
  print(error)
  # You can also retrieve specific error fields from the exception.
  print(error.code)
  # Tip: You can access other error properties by using error.__dict__.
<?php

// Add the SDK dependency.
//composer require alibabacloud/ocr-20191230

use AlibabaCloud\SDK\Ocr\V20191230\Ocr;
use \Exception;
use AlibabaCloud\Tea\Utils\Utils;
use Darabonba\OpenApi\Models\Config;
use AlibabaCloud\SDK\Ocr\V20191230\Models\RecognizeCharacterRequest;
use AlibabaCloud\Tea\Utils\Utils\RuntimeOptions;

class RecognizeCharacter {

    /**
     * Initialize the client by using an AccessKey pair.
     * @param string $accessKeyId
     * @param string $accessKeySecret
     * @return Ocr Client
     */
    public static function createClient($accessKeyId, $accessKeySecret){
        // Initialize the configuration object.
        // It stores your AccessKey ID, AccessKey Secret, endpoint, and other configuration details.
        $config = new Config([
            "accessKeyId" => $accessKeyId,
            "accessKeySecret" => $accessKeySecret
        ]);
        // The service endpoint.
        $config->endpoint = "ocr.cn-shanghai.aliyuncs.com";
        return new Ocr($config);
    }

    /**
     * @param string[] $args
     * @return void
     */
    public static function main($args){
        // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
        // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
        // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.
        $accessKeyId = getenv('ALIBABA_CLOUD_ACCESS_KEY_ID');
        $accessKeySecret = getenv('ALIBABA_CLOUD_ACCESS_KEY_SECRET'); 
        $client = self::createClient($accessKeyId, $accessKeySecret);
        $recognizeCharacterRequest = new RecognizeCharacterRequest([
            "imageURL" => "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg",
            "minHeight" => 10,
            "outputProbability" => true
        ]);
        $runtime = new RuntimeOptions([]);
        try {
            $resp = $client->recognizeCharacterWithOptions($recognizeCharacterRequest, $runtime);
            # Call the API and print the response body.
            echo Utils::toJSONString($resp->body);
        } catch (Exception $exception) {
            # Handle exceptions by printing the error message.
            echo Utils::toJSONString($exception);
            # You can also retrieve specific error fields from the exception.
            echo $exception->getCode();
        }
    }
}
$path = __DIR__ . \DIRECTORY_SEPARATOR . '..' . \DIRECTORY_SEPARATOR . 'vendor' . \DIRECTORY_SEPARATOR . 'autoload.php';
if (file_exists($path)) {
    require_once $path;
}
// The $argv parameter is reserved for array input and must not be modified.
RecognizeCharacter::main(array_slice($argv, 1));
// Add the SDK dependency.
// npm install @alicloud/ocr20191230
const OcrClient = require('@alicloud/ocr20191230');
const OpenapiClient = require('@alicloud/openapi-client');
const TeaUtil = require('@alicloud/tea-util');

let config = new OpenapiClient.Config({
  // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
  // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured. 
  accessKeyId: process.env.ALIBABA_CLOUD_ACCESS_KEY_ID,   
  accessKeySecret: process.env.ALIBABA_CLOUD_ACCESS_KEY_SECRET
});
// The service endpoint.
config.endpoint = `ocr.cn-shanghai.aliyuncs.com`;
const client = new OcrClient.default(config);
let recognizeCharacterRequest = new OcrClient.RecognizeCharacterRequest({
  minHeight: 10,
  outputProbability: true,
  imageURL: "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg",
});
let runtime = new TeaUtil.RuntimeOptions({});
client.recognizeCharacterWithOptions(recognizeCharacterRequest, runtime)
  .then(function (recognizeCharacterResponse) {
    // Call the API and print the full response.
    console.log(recognizeCharacterResponse);
    // You can also retrieve specific fields from the response.
    console.log(recognizeCharacterResponse.body.data);
  }, function (error) {
    // Handle exceptions by printing the error message.
    console.log(error);
    // You can also retrieve specific error fields from the exception.
    console.log(error.data.Code);
  })
// This code depends on the github.com/alibabacloud-go/ocr-20191230/v3 module. 
// Run 'go mod tidy' to install the dependencies.
package main

import (
	"fmt"
	openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
	ocr20191230  "github.com/alibabacloud-go/ocr-20191230/v3/client"
	util "github.com/alibabacloud-go/tea-utils/v2/service"
	"github.com/alibabacloud-go/tea/tea"
	"os"
)

func main() {
  // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
  // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.  
  accessKeyId := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_ID")  
  accessKeySecret := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET")
  // Initialize the configuration object. 
  // It stores your AccessKey ID, AccessKey Secret, endpoint, and other configuration details.
  config := &openapi.Config{
    AccessKeyId: tea.String(accessKeyId),
    AccessKeySecret: tea.String(accessKeySecret),
	}
	// The service endpoint.
	config.Endpoint = tea.String("ocr.cn-shanghai.aliyuncs.com")
	client, err := ocr20191230.NewClient(config)
	if err != nil {
		fmt.Println(err.Error())
	}

	recognizeCharacterRequest := &ocr20191230.RecognizeCharacterRequest{
		ImageURL: tea.String("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg"),
		MinHeight: tea.Int32(10),
		OutputProbability: tea.Bool(true),
	}
	runtime := &util.RuntimeOptions{}
	recognizeCharacterResponse, _err := client.RecognizeCharacterWithOptions(recognizeCharacterRequest, runtime)
	if _err != nil {
		// Handle exceptions.
		fmt.Println(_err.Error())
	} else {
		// Call the API and print the full response.
		fmt.Println(recognizeCharacterResponse)
		// You can also retrieve specific fields from the response.
		fmt.Println(recognizeCharacterResponse.Body.Data)
	}
}
// Add the SDK dependency.
// dotnet add package AlibabaCloud.SDK.Ocr20191230
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Threading.Tasks;
using AlibabaCloud.SDK.Ocr20191230.Models;
using Tea;
using Tea.Utils;

namespace AlibabaCloud.SDK.Sample
{
    public class Sample
    {
        /**
            * Initialize the client by using an AccessKey pair.
            * @param accessKeyId
            * @param accessKeySecret
            * @return Client
            * @throws Exception
        */
        public static AlibabaCloud.SDK.Ocr20191230.Client CreateClient(string accessKeyId, string accessKeySecret)
        {
            AlibabaCloud.OpenApiClient.Models.Config config = new AlibabaCloud.OpenApiClient.Models.Config
            {
                AccessKeyId = accessKeyId,
                AccessKeySecret = accessKeySecret,
            };
            // The service endpoint.
            config.Endpoint = "ocr.cn-shanghai.aliyuncs.com";
            return new AlibabaCloud.SDK.Ocr20191230.Client(config);
        }
        public static void Main(string[] args)
        {
            // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
            // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
            // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.
            AlibabaCloud.SDK.Ocr20191230.Client client = CreateClient(System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_ID"), System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_SECRET"));
            AlibabaCloud.SDK.Ocr20191230.Models.RecognizeCharacterRequest recognizeCharacterRequest = new AlibabaCloud.SDK.Ocr20191230.Models.RecognizeCharacterRequest
            {
                MinHeight = 10,
                OutputProbability = true,
                ImageURL = "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg",
            };
            AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();
            try
            {
                AlibabaCloud.SDK.Ocr20191230.Models.RecognizeCharacterResponse recognizeCharacterResponse = client.RecognizeCharacterWithOptions(recognizeCharacterRequest, runtime);
                // Call the API and print the response body as a JSON string.
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizeCharacterResponse.Body));
                // You can also retrieve specific fields from the response.
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizeCharacterResponse.Body.Data));
            }
            catch (TeaException error)
            {
                // Handle exceptions.
                AlibabaCloud.TeaUtil.Common.AssertAsString(error.Message);
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
                {
                    { "message", _error.Message }
                });
                // Handle exceptions.
                Console.WriteLine(error.Message);
            }
        }
    }
}

Image from a local file or public URL

/*
Add the SDK dependency.
<!-- https://mvnrepository.com/artifact/com.aliyun/ocr20191230 -->
<dependency>
      <groupId>com.aliyun</groupId>
      <artifactId>ocr20191230</artifactId>
      <version>${aliyun.ocr.version}</version>
</dependency>
*/

import com.aliyun.ocr20191230.models.RecognizeCharacterResponse;
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 RecognizeCharacter {

    public static com.aliyun.ocr20191230.Client createClient(String accessKeyId, String accessKeySecret) throws Exception {
        /*
          Initialize the configuration object.
          It stores your AccessKey ID, AccessKey Secret, endpoint, and other configuration details.
         */
         com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config()
                .setAccessKeyId(accessKeyId)
                .setAccessKeySecret(accessKeySecret);
        // The service endpoint.
        config.endpoint = "ocr.cn-shanghai.aliyuncs.com";
        return new com.aliyun.ocr20191230.Client(config);
    }

    public static void main(String[] args) throws Exception {
        // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
        // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
        // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.
        String accessKeyId = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
        String accessKeySecret = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"); 
        com.aliyun.ocr20191230.Client client = RecognizeCharacter.createClient(accessKeyId, accessKeySecret);
        // Scenario 1: Use a local file.
        //InputStream inputStream = new FileInputStream(new File("/tmp/RecognizeCharacter1.jpg"));
        // Scenario 2: Use a publicly accessible URL.
        URL url = new URL("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg");
        InputStream inputStream = url.openConnection().getInputStream();
        com.aliyun.ocr20191230.models.RecognizeCharacterAdvanceRequest recognizeCharacterAdvanceRequest = new com.aliyun.ocr20191230.models.RecognizeCharacterAdvanceRequest()
                .setImageURLObject(inputStream)
                .setMinHeight(10)
                .setOutputProbability(true);
        com.aliyun.teautil.models.RuntimeOptions runtime = new com.aliyun.teautil.models.RuntimeOptions();
        try {
            // Call the API and print the response body as a JSON string.
            RecognizeCharacterResponse response = client.recognizeCharacterAdvance(recognizeCharacterAdvanceRequest, runtime);
            System.out.println(com.aliyun.teautil.Common.toJSONString(TeaModel.buildMap(response)));
        } catch (TeaException error) {
            // Handle exceptions by printing the error message.
            System.out.println(com.aliyun.teautil.Common.toJSONString(error));
            // You can also retrieve specific error fields from the exception.
            System.out.println(error.getCode());
        }
    }
}
# -*- coding: utf-8 -*-
# Add the SDK dependency.
# pip install alibabacloud_ocr20191230

import os
import io
from urllib.request import urlopen
from alibabacloud_ocr20191230.client import Client
from alibabacloud_ocr20191230.models import RecognizeCharacterAdvanceRequest
from alibabacloud_tea_openapi.models import Config
from alibabacloud_tea_util.models import RuntimeOptions

config = Config(
  # For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
  # If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  # Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.
  access_key_id=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_ID'),
  access_key_secret=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_SECRET'),
  # The service endpoint.
  endpoint='ocr.cn-shanghai.aliyuncs.com',
  # The region ID of the endpoint.
  region_id='cn-shanghai'
)
# Scenario 1: Use a local file.
#img = open(r'/tmp/RecognizeCharacter5.jpg', 'rb')
# Scenario 2: Use a publicly accessible URL.
url = 'http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg'
img = io.BytesIO(urlopen(url).read())
recognize_character_request = RecognizeCharacterAdvanceRequest()
recognize_character_request.image_urlobject = img
recognize_character_request.output_probability = True
recognize_character_request.min_height = 10
runtime = RuntimeOptions()
try:
  # Initialize the client.
  client = Client(config)
  response = client.recognize_character_advance(recognize_character_request, runtime)
  # Call the API and print the response body.
  print(response.body)
except Exception as error:
  # Handle exceptions by printing the error message.
  print(error)
  # You can also retrieve specific error fields from the exception.
  print(error.code)
  # Tip: You can access other error properties by using error.__dict__.
<?php

// Add the SDK dependency.
//composer require alibabacloud/ocr-20191230

use AlibabaCloud\SDK\Ocr\V20191230\Ocr;
use \Exception;
use AlibabaCloud\Tea\Utils\Utils;
use Darabonba\OpenApi\Models\Config;
use AlibabaCloud\SDK\Ocr\V20191230\Models\RecognizeCharacterAdvanceRequest;
use AlibabaCloud\Tea\Utils\Utils\RuntimeOptions;
use GuzzleHttp\Psr7\Stream;

class RecognizeCharacterAdvance {

    /**
     * Initialize the client by using an AccessKey pair.
     * @param string $accessKeyId
     * @param string $accessKeySecret
     * @return Ocr Client
     */
    public static function createClient($accessKeyId, $accessKeySecret){
        // Initialize the configuration object.
        // It stores your AccessKey ID, AccessKey Secret, endpoint, and other configuration details.
        $config = new Config([
            "accessKeyId" => $accessKeyId,
            "accessKeySecret" => $accessKeySecret
        ]);
        // The service endpoint.
        $config->endpoint = "ocr.cn-shanghai.aliyuncs.com";
        return new Ocr($config);
    }

    /**
     * @param string[] $args
     * @return void
     */
    public static function main($args){
        // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
        // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
        // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.
        $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 a publicly accessible URL.
        $file = fopen('http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg', 'rb');
        $stream = new Stream($file);
        $recognizeCharacterAdvanceRequest = new RecognizeCharacterAdvanceRequest([
            "imageURLObject" => $stream,
            "minHeight" => 10,
            "outputProbability" => true
        ]);
        $runtime = new RuntimeOptions([]);
        try {
            $resp = $client->recognizeCharacterAdvance($recognizeCharacterAdvanceRequest, $runtime);
            # Call the API and print the response body.
            echo Utils::toJSONString($resp->body);
        } catch (Exception $exception) {
            # Handle exceptions by printing the error message.
            echo Utils::toJSONString($exception);
            # You can also retrieve specific error fields from the exception.
            echo $exception->getCode();
        }
    }
}
$path = __DIR__ . \DIRECTORY_SEPARATOR . '..' . \DIRECTORY_SEPARATOR . 'vendor' . \DIRECTORY_SEPARATOR . 'autoload.php';
if (file_exists($path)) {
    require_once $path;
}
// The $argv parameter is reserved for array input and must not be modified.
RecognizeCharacterAdvance::main(array_slice($argv, 1));
// Add the SDK dependency.
// npm install @alicloud/ocr20191230
const OcrClient = require('@alicloud/ocr20191230');
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({
  // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
  // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured. 
  accessKeyId: process.env.ALIBABA_CLOUD_ACCESS_KEY_ID,   
  accessKeySecret: process.env.ALIBABA_CLOUD_ACCESS_KEY_SECRET
});
// The service endpoint.
config.endpoint = `ocr.cn-shanghai.aliyuncs.com`;
const client = new OcrClient.default(config);
const getResponse = function (httpClient, url) {
  return new Promise((resolve, reject) => {
    httpClient.get(url, function (response) {
      resolve(response);
    })
  })
}
const request = async function () {
  try {
    const client = new OcrClient.default(config);
    let recognizeCharacterAdvanceRequest = new OcrClient.RecognizeCharacterAdvanceRequest();
    // Scenario 1: Use a local file.
    // const fileStream = fs.createReadStream('/tmp/RecognizeCharacter1.jpg');
    // recognizeCharacterAdvanceRequest.imageURLObject = fileStream;
    // recognizeCharacterAdvanceRequest.minHeight = 10;
    // recognizeCharacterAdvanceRequest.outputProbability = true;
    // Scenario 2: Use a publicly accessible URL.
    const url = new URL("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg");
    const httpClient = (url.protocol == "https:") ? https : http;
    recognizeCharacterAdvanceRequest.imageURLObject = await getResponse(httpClient, url);
    recognizeCharacterAdvanceRequest.minHeight = 10;
    recognizeCharacterAdvanceRequest.outputProbability = true;
    let runtime = new TeaUtil.RuntimeOptions({ });
    client.recognizeCharacterAdvance(recognizeCharacterAdvanceRequest, runtime)
      .then(function(recognizeCharacterResponse) {
        // Call the API and print the full response.
        console.log(recognizeCharacterResponse);
        // You can also retrieve specific fields from the response.
        console.log(recognizeCharacterResponse.body.data);
      }, function(error) {
        // Handle exceptions by printing the error message.
        console.log(error);
        // You can also retrieve specific error fields from the exception.
        console.log(error.data.Code);
      })
  } catch (error) {
    console.log(error);
  }
}();
// This code depends on the github.com/alibabacloud-go/ocr-20191230/v3 module. 
// Run 'go mod tidy' to install the dependencies.
package main

import (
	"fmt"
	openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
	ocr20191230 "github.com/alibabacloud-go/ocr-20191230/v3/client"
	util "github.com/alibabacloud-go/tea-utils/v2/service"
	"github.com/alibabacloud-go/tea/tea"
	"net/http"
	"os"
)

func main() {
  // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
  // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
  // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.
  accessKeyId := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_ID")  
  accessKeySecret := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET")
  // Initialize the configuration object. 
  // It stores your AccessKey ID, AccessKey Secret, endpoint, and other configuration details.
  config := &openapi.Config{
    AccessKeyId: tea.String(accessKeyId),
    AccessKeySecret: tea.String(accessKeySecret),
	}
	// The service endpoint.
	config.Endpoint = tea.String("ocr.cn-shanghai.aliyuncs.com")
	client, err := ocr20191230.NewClient(config)
	if err != nil {
		fmt.Println(err.Error())
	}

	// Scenario 1: Use a local file.
	//file, err := os.Open("/tmp/RecognizeCharacter1.jpg")
	//if err != nil {
	//	fmt.Println("can not open file", err)
	//}
	//recognizeCharacterAdvanceRequest := &ocr20191230.RecognizeCharacterAdvanceRequest{
	//	ImageURLObject:    file,
	//	MinHeight:         tea.Int32(10),
	//	OutputProbability: tea.Bool(true),
	//}
	// Scenario 2: Use a publicly accessible URL.
	httpClient := http.Client{}
	file1, _ := httpClient.Get("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg")
	recognizeCharacterAdvanceRequest := &ocr20191230.RecognizeCharacterAdvanceRequest{
		ImageURLObject:    file1.Body,
		MinHeight:         tea.Int32(10),
		OutputProbability: tea.Bool(true),
	}
	runtime := &util.RuntimeOptions{}
	recognizeCharacterResponse, _err := client.RecognizeCharacterAdvance(recognizeCharacterAdvanceRequest, runtime)
	if _err != nil {
		// Handle exceptions.
		fmt.Println(_err.Error())
	} else {
		// Call the API and print the full response.
		fmt.Println(recognizeCharacterResponse)
		// You can also retrieve specific fields from the response.
		fmt.Println(recognizeCharacterResponse.Body.Data)
	}
}
// Add the SDK dependency.
// dotnet add package AlibabaCloud.SDK.Ocr20191230
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Threading.Tasks;
using AlibabaCloud.SDK.Ocr20191230.Models;
using Tea;
using Tea.Utils;

namespace AlibabaCloud.SDK.Sample
{
    public class Sample
    {
        /**
            * Initialize the client by using an AccessKey pair.
            * @param accessKeyId
            * @param accessKeySecret
            * @return Client
            * @throws Exception
        */
        public static AlibabaCloud.SDK.Ocr20191230.Client CreateClient(string accessKeyId, string accessKeySecret)
        {
            AlibabaCloud.OpenApiClient.Models.Config config = new AlibabaCloud.OpenApiClient.Models.Config
            {
                AccessKeyId = accessKeyId,
                AccessKeySecret = accessKeySecret,
            };
            // The service endpoint.
            config.Endpoint = "ocr.cn-shanghai.aliyuncs.com";
            return new AlibabaCloud.SDK.Ocr20191230.Client(config);
        }
        public static void Main(string[] args)
        {
            // For information about how to create an AccessKey pair, see https://help.aliyun.com/document_detail/175144.html.
            // If you use a RAM user's AccessKey pair, you must grant the AliyunVIAPIFullAccess permission to the RAM user. For more information, see https://help.aliyun.com/document_detail/145025.html.
            // Before running the sample code, make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured.
            AlibabaCloud.SDK.Ocr20191230.Client client = CreateClient(System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_ID"), System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_SECRET"));
            AlibabaCloud.SDK.Ocr20191230.Models.RecognizeCharacterAdvanceRequest recognizeCharacterAdvanceRequest = new AlibabaCloud.SDK.Ocr20191230.Models.RecognizeCharacterAdvanceRequest
            ();
            // Scenario 1: Use a local file.
            // System.IO.StreamReader file = new System.IO.StreamReader(@"/tmp/RecognizeCharacter1.jpg");
            // recognizeCharacterAdvanceRequest.ImageURLObject = file.BaseStream;
            // recognizeCharacterAdvanceRequest.MinHeight = 10;
            // recognizeCharacterAdvanceRequest.OutputProbability = true;
            // Scenario 2: Use a publicly accessible URL.
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizeCharacter/RecognizeCharacter1.jpg");
            WebResponse response = request.GetResponse();
            Stream stream = response.GetResponseStream();
            recognizeCharacterAdvanceRequest.ImageURLObject = stream;
            recognizeCharacterAdvanceRequest.MinHeight = 10;
            recognizeCharacterAdvanceRequest.OutputProbability = true;
            AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();
            try
            {
                AlibabaCloud.SDK.Ocr20191230.Models.RecognizeCharacterResponse recognizeCharacterResponse = client.RecognizeCharacterAdvance(recognizeCharacterAdvanceRequest, runtime);
                // Call the API and print the response body as a JSON string.
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizeCharacterResponse.Body));
                // You can also retrieve specific fields from the response.
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizeCharacterResponse.Body.Data));
            }
            catch (TeaException error)
            {
                // Handle exceptions.
                AlibabaCloud.TeaUtil.Common.AssertAsString(error.Message);
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
                {
                    { "message", _error.Message }
                });
                // Handle exceptions.
                Console.WriteLine(error.Message);
            }
        }
    }
}
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