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
https://github.com/emgucv/emgucv C#
https://github.com/opencv/opencv_extra C++
https://github.com/opencv/opencv
https://pypi.tuna.tsinghua.edu.cn/simple/opencv-python/ Python
/// <summary>
/// 图像文件转Base64 Geovin Du
/// </summary>
/// <param name="filepath"></param>
/// <returns></returns>
public string ImageToBase64(string filepath)
{
string base64String = string.Empty;
try
{
// string path = "D:\SampleImage.jpg";
using (System.Drawing.Image image = System.Drawing.Image.FromFile(filepath))
{
using (MemoryStream m = new MemoryStream())
{
image.Save(m, image.RawFormat);
byte[] imageBytes = m.ToArray();
base64String = Convert.ToBase64String(imageBytes);
return base64String;
}
}
}
catch(Exception ex)
{
ex.Message.ToString();
}
return base64String;
}
/// <summary>
/// Base64转image
/// </summary>
/// <param name="base64String"></param>
/// <returns></returns>
public System.Drawing.Image Base64ToImage(string base64String)
{
byte[] imageBytes = Convert.FromBase64String(base64String);
MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);
ms.Write(imageBytes, 0, imageBytes.Length);
System.Drawing.Image image = System.Drawing.Image.FromStream(ms, true);
return image;
}
Background Removal API https://www.remove.bg/zh/g/developers
https://github.com/brilam/remove-bg python
https://github.com/mtownsend5512/remove-bg php
https://github.com/remove-bg/go go
https://github.com/remove-bg
//https://www.remove.bg/zh/api
HttpClient client = new HttpClient();
// using (client = new HttpClient());
//
using (var formData = new MultipartFormDataContent())
{
formData.Headers.Add("X-Api-Key", "geovindu 涂聚文 Geovin Du");
formData.Add(new ByteArrayContent(File.ReadAllBytes(Server.MapPath("Images/pdf.jpg"))), "image_file", Server.MapPath("Images/2.jpg"));
formData.Add(new StringContent("auto"), "size");////preview,full,auto,regular
var response = client.PostAsync("https://api.remove.bg/v1.0/removebg", formData).Result;
if(response.IsSuccessStatusCode) {
FileStream fileStream = new FileStream(Server.MapPath("Images/geovindu_no-bg.png"), FileMode.Create, FileAccess.Write, FileShare.None);
response.Content.CopyToAsync(fileStream).ContinueWith((copyTask) =>{ fileStream.Close(); });
} else {
Console.WriteLine("Error: " + response.Content.ReadAsStringAsync().Result);
}
}
/// <summary>
/// 改换背景色
/// 把人像填色>150，<150 把背景色填写了
/// </summary>
/// <param name="scrBitmap"></param>
/// <param name="newColor">改为新的背景色</param>
/// <returns></returns>
public static Bitmap ChangeColor(Bitmap scrBitmap,Color newColor)
{
//https://stackoverflow.com/questions/17208254/how-to-change-pixel-color-of-an-image-in-c-net
//You can change your new color here. Red,Green,LawnGreen any..
// Image imggree = Image.FromFile("green1.jpg");
// Bitmap grebt = new Bitmap(imggree);
//得到背景色（从坐标1，1得到）
// Color greenColor = grebt.GetPixel(1, 1);
//Color newColor = greenColor;// Color.Green;
Color actualColor;
//actualColor = scrBitmap.GetPixel(1, 1);
//make an empty bitmap the same size as scrBitmap
Bitmap newBitmap = new Bitmap(scrBitmap.Width, scrBitmap.Height);
for (int i = 0; i < scrBitmap.Width; i++)
{
for (int j = 0; j < scrBitmap.Height; j++)
{
//get the pixel from the scrBitmap image
actualColor = scrBitmap.GetPixel(i, j);
// > 150 because.. Images edges can be of low pixel colr. if we set all pixel color to new then there will be no smoothness left.
if (actualColor.A < 150) //>150 人像改了颜色
newBitmap.SetPixel(i, j, newColor);
else
newBitmap.SetPixel(i, j, actualColor);
}
}
return newBitmap;
}