# 翻拍识别示例
本章节对翻拍识别AK/SK方式使用SDK进行示例说明。
- 翻拍识别示例代码只需将AK/SK信息替换为实际AK/SK，代码中可以使用RunRecaptureDetectReq中的url或image方法配置图像信息（image和url参数二选一），示例中以url为例，配置完成后运行即可。
- endpoint是华为云各服务应用区域和各服务的终端节点，详情请查看 [地区和终端节点](https://developer.huaweicloud.com/endpoint?Image)。
1. 翻拍识别调用示例代码如下：
   ```
   using System;
   using System.Collections.Generic;
   using HuaweiCloud.SDK.Core;
   using HuaweiCloud.SDK.Core.Auth;
   using HuaweiCloud.SDK.Image;
   using HuaweiCloud.SDK.Image.V2;
   using HuaweiCloud.SDK.Image.V2.Model;
    
   namespace RunRecaptureDetectSolution
   {
       class Program
       {
           static void Main(string[] args)
           {
          //认证用的ak和sk硬编码到代码中或者明文存储都有很大的安全风险，建议在配置文件或者环境变量中密文存放，使用时解密，确保安全
         //本示例以ak和sk保存在环境变量中来实现身份验证为例，运行本示例前请先在本地环境中设置环境变量HUAWEICLOUD_SDK_AK和HUAWEICLOUD_SDK_SK  
           string accessKey= Environment.GetEnvironmentVariable("HUAWEICLOUD_SDK_AK", EnvironmentVariableTarget.Machine);
           string secretKey= Environment.GetEnvironmentVariable("HUAWEICLOUD_SDK_SK", EnvironmentVariableTarget.Machine);
    
               var config = HttpConfig.GetDefaultConfig();
               config.IgnoreSslVerification = true;
               var auth = new BasicCredentials(ak, sk);
    
               var client = ImageClient.NewBuilder()
                       .WithCredential(auth)
                       .WithRegion(ImageRegion.ValueOf("cn-north-4"))  //此处替换为您开通服务的区域，详情请查看地区和终端节点.
                       .WithHttpConfig(config)
                       .Build();
    
               var req = new RunRecaptureDetectRequest
               {
               };
               req.Body = new RecaptureDetectReq()
               {
                   Threshold = 0,
                   Url = "https://bucketname.obs.cn-north-4.myhuaweicloud.com/image/test1.jpg"//替换为公网可以访问的图片地址
               };
    
               try
               {
                   var resp = client.RunRecaptureDetect(req);
                   var respStatusCode = resp.HttpStatusCode;
                   Console.WriteLine(respStatusCode); 
                     Console.WriteLine(resp.HttpBody);
               }
               catch (RequestTimeoutException requestTimeoutException)
               {
                   Console.WriteLine(requestTimeoutException.ErrorMessage);
               }
               catch (ServiceResponseException clientRequestException)
               {
                   Console.WriteLine(clientRequestException.HttpStatusCode);
                   Console.WriteLine(clientRequestException.RequestId);
                   Console.WriteLine(clientRequestException.ErrorCode);
                   Console.WriteLine(clientRequestException.ErrorMsg);
               }
               catch (ConnectionException connectionException)
               {
                   Console.WriteLine(connectionException.ErrorMessage);
               }
           }
       }
   }
   ```
   
2. 执行示例代码文件，控制台输出翻拍识别结果即表示程序执行成功。
   ```
   200
   {"result":{"suggestion":"false","category":"recapture","score":"0.9998","detail":[{"label":"recapture","confidence":"0.9998"}]}}
   ```