图像识别 Image-主体识别示例

时间：2025-02-12 14:57:50

图像识别 Image

主体识别示例

本章节对主体识别AK/SK方式使用SDK进行示例说明。

主体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ImageMainObjectDetectionReq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。

主体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 RunImageMainObjectDetectionSolution{    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 RunImageMainObjectDetectionRequest            {            };            req.Body = new ImageMainObjectDetectionReq()            {                Threshold = 30,                Url = "https://XXX.jpg"  //替换为公网可以访问的图片地址            };            try            {                var resp = client.RunImageMainObjectDetection(req);                var respStatusCode = resp.HttpStatusCode;                Console.WriteLine(respStatusCode);            }            catch (RequestTimeoutException requestTimeoutException)            {                Console.WriteLine(requestTimeoutException.ErrorMessage);            }            catch (ServiceResponseException clientRequestException)            {                Console.WriteLine(clientRequestException.HttpStatusCode);                Console.WriteLine(clientRequestException.ErrorCode);                Console.WriteLine(clientRequestException.ErrorMsg);            }            catch (ConnectionException connectionException)            {                Console.WriteLine(connectionException.ErrorMessage);            }        }    }}

执行示例代码文件，控制台输出主体识别结果即表示程序执行成功。相关参数说明请参考主体识别API。

       
            {"result": [{"confidence": "95.73","label": "bounding_box","location": {"height": 327.77,"top_left_x": 3.7,"top_left_y": 1.72,"width": 463.03}},{"confidence": "88.35","label": "main_object_box","location": {"height": 328.35,"top_left_x": 3.22,"top_left_y": 1.5,"width": 456.63}}]}