相似图检索

功能描述

相似图检索帮助您从图库中检索出与给定的图片相似的若干张图片。关于参数的详细说明，请参见相似图检索API文档。

您需要使用内容安全的API接入地址，调用本SDK接口。关于API接入地址的信息，请参见接入地址（Endpoint）。

前提条件

提交相似图检索任务

using System;
using Newtonsoft.Json;
using Aliyun.Acs.Core;
using Aliyun.Acs.Core.Http;
using Aliyun.Acs.Core.Profile;
using Aliyun.Acs.Green.Model.V20180509;
using System.Collections.Generic;

namespace csharp_sdk_sample
{
    class Program
    {
        static void Main(string[] args)
        {
            /**
             * 常见获取环境变量方式：
             *     获取RAM用户AccessKey ID：Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_ID");
             *     获取RAM用户AccessKey Secret：Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_SECRET");
             */
            DefaultProfile profile = DefaultProfile.GetProfile(
                    "cn-shanghai",
                    "建议从环境变量中获取RAM用户AccessKey ID",
                    "建议从环境变量中获取RAM用户AccessKey Secret");
            DefaultAcsClient client = new DefaultAcsClient(profile);

            ImageSyncScanRequest request = new ImageSyncScanRequest();
            request.AcceptFormat = FormatType.JSON;
            request.ContentType = FormatType.JSON;
            request.Method = MethodType.POST;
            request.Encoding = "UTF-8";

            Dictionary<string, object> task1 = new Dictionary<string, object>();
            task1.Add("dataId", "检测数据ID");
            task1.Add("url", "待检测图片链接地址");
            task1.Add("similarityLibraries", new List<string> { "相似图样本图库名称_1", "相似图样本图库名称_2" });

            Dictionary<string, object> httpBody = new Dictionary<string, object>();
            /**
            * 设置要检测的场景，计费是按照该处传递的场景进行。
            * similarity：表示进行相似图检索。
            */
            httpBody.Add("scenes", new List<string> { "similarity" });
            httpBody.Add("bizType", "业务场景");
            httpBody.Add("tasks", new List<Dictionary<string, object>> { task1 });
            request.SetContent(System.Text.Encoding.Default.GetBytes(JsonConvert.SerializeObject(httpBody)), "utf-8", FormatType.JSON);
            try
            {
                ImageSyncScanResponse response = client.GetAcsResponse(request);
                if (response.HttpResponse.Status != 200)
                {
                    Console.WriteLine("the request failed. status:{0}", response.HttpResponse.Status);
                }
                Console.WriteLine(System.Text.Encoding.Default.GetString(response.HttpResponse.Content));
            }
            catch (Exception ex)
            {
                Console.WriteLine("Failed with error info: {0}", ex.Message);
            }
        }
    }
}