using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Windows.Media.Imaging; //PresentationCore  //WindowsBase
using System.Windows.Media;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Net;
using System.IO;
using System.Net.Http;
using System.Text;

public partial class Default2 : System.Web.UI.Page
{

    /// <summary>
    /// 2020-12-26 涂聚文（Geovin Du)
    /// 人像抠图 百度AI的API
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void Page_Load(object sender, EventArgs e)
    {
        JsonSerializerSettings settings = new JsonSerializerSettings();
        //
        string sToken = AccessToken.getAccessToken();
        JToken st = JToken.Parse(sToken);
        JObject jsonst = JObject.Parse(sToken);
        BaiduAITokenData we = JsonConvert.DeserializeObject<BaiduAITokenData>(sToken);
        //Response.Write(we.access_token+"<br/><br/>");
        //
        string sResult = body_seg();
        JToken jt = JToken.Parse(sResult);
        JObject jsonimg = JObject.Parse(sResult);


        BaiduAIBody body = JsonConvert.DeserializeObject<BaiduAIBody>(sResult);
        // Bitmap bmp = GetImageFromBase64(body.foreground);
        this.Image1.ImageUrl = "data:image/png;base64," + body.foreground;  //data:image/jpeg;base64,

        this.Image2.ImageUrl = "data:image/png;base64," + body.scoremap;
        //BitmapImage bmp = parseImageFromBase64(body.foreground);
        

    }
    /// <summary>
    /// 
    /// </summary>
    /// <param name="fileName"></param>
    /// <returns></returns>
    public String getFileBase64(String fileName)
    {
        FileStream filestream = new FileStream(fileName, FileMode.Open);
        byte[] arr = new byte[filestream.Length];
        filestream.Read(arr, 0, (int)filestream.Length);
        string baser64 = Convert.ToBase64String(arr);
        filestream.Close();
        return baser64;
    }
    /// <summary>
    /// 人像图获取
    /// </summary>
    /// <returns></returns>
    public string body_seg()
    {
        string token = AccessToken.TOKEN;// AccessToken.getAccessToken();// "[调用鉴权接口获取的token]";
        string sToken = AccessToken.getAccessToken();
        JToken st = JToken.Parse(sToken);
        JObject jsonst = JObject.Parse(sToken);
        BaiduAITokenData we = JsonConvert.DeserializeObject<BaiduAITokenData>(sToken);
        //Response.Write(token + "<br/>");
        string host = "https://aip.baidubce.com/rest/2.0/image-classify/v1/body_seg?access_token=" + we.access_token;
        Encoding encoding = Encoding.ASCII;
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(host);
        request.Method = "post";
        request.ContentType = "application/x-www-form-urlencoded";
        request.KeepAlive = true;
        string file = Server.MapPath("Images/涂聚文1.jpg");
        // 图片的base64编码
        string base64 = getFileBase64(file);
        String str = "image=" + HttpUtility.UrlEncode(base64);//
        byte[] buffer = encoding.GetBytes(str);
        request.ContentLength = buffer.Length;
        request.GetRequestStream().Write(buffer, 0, buffer.Length);
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.ASCII);
        string result = reader.ReadToEnd();
        Console.WriteLine("人像分割:");
        Console.WriteLine(result);
        //Response.Write(result);
        return result;
    }
    /// <summary>
    /// 
    /// </summary>
    /// <param name="sBase64"></param>
    /// <returns></returns>
    BitmapImage parseImageFromBase64(string sBase64)
    {

        char[] c = sBase64.ToCharArray();// Properties.Resources.testImgData .ToCharArray();
        byte[] buffer = System.Convert.FromBase64CharArray(c, 0, c.Length);
        MemoryStream m = new MemoryStream(buffer);
        m.Position = 0;
        BitmapImage bmp = new BitmapImage();
        bmp.BeginInit();
        bmp.StreamSource = m;
        bmp.EndInit();       
        return bmp;
    }

}

　　百度AI开放平台-人像分割： http://ai.baidu.com/tech/body/seg