C# 图像二值化

C#实现的二值化处理, 比较简单, 仅供参考.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Pic2Val
{
    public partial class Form1 : Form
    {
        OpenFileDialog choosepic = new OpenFileDialog（）;
        FolderBrowserDialog savepic = new FolderBrowserDialog（）;
        int filenumcolorthreshold; 


        public Form1（）
        {
            InitializeComponent（）;
            choosepic.Multiselect = true;
            
        }

        private void button1_Click（object sender EventArgs e）
        {
            if （choosepic.ShowDialog（） == DialogResult.OK）
            {
                filenum=choosepic.FileNames.GetLength（0）;
                lb_filenum.Text = “The number of files you have choosen: “ + filenum.ToString（）+“.“;
            }
            if （savepic.ShowDialog（） == DialogResult.OK）
            {
                lb_savepath.Text = savepic.SelectedPath;
            }
        }

        private void button2_Click（object sender EventArgs e）
        {
            int i j k;
            Bitmap picbuf;

            progressBar1.Value = 0;
            progressBar1.Refresh（）;
            
            colorthreshold = trackBar1.Value;
            for （i = 0; i < filenum; i++）
            {
                picbuf = new Bitmap（choosepic.FileNames[i]）;
                for （j = 1; j < picbuf.Width; j++）
                {
                    for （k = 1; k < picbuf.Height; k++）
                    {
                        if （（picbuf.GetPixel（j k）.R + picbuf.GetPixel（j k）.B + picbuf.GetPixel（j k）.G）/3 < colorthreshold）
                        {
                                picbuf.SetPixel（jkColor.Black）;
                        }
                        else if （（picbuf.GetPixel（j k）.R + picbuf.GetPixel（j k）.B + picbuf.GetPixel（j k）.G）/3 > colorthreshold）
                        {
                            picbuf.SetPixel（j k Color.White）;
                        }
                    }
                    progressBar2.Value = （j+1） * 100 / picbuf.Width;
                    progressBar2.Refresh（）;
                }
                progressBar1.Value = （i + 1） * 100 / filenum;
                progressBar1.Refresh（）;
                picbuf.Save（lb_savepath.Text.Replace（“\\“ “\\\\“） + “\\picture_“ + DateTime.Now.Minute.ToString（） + DateTime.Now.Second.ToString（） + “_“ + i.ToString（） + “.jpg“）;
                //picbuf.Save（ choosepic.FileNames[i].Insert（choosepic.FileNames[i].Length-4“_converted“）.Replace（“\\“ “\\\\“））;
            }
            lb_filenum.Text.Insert（lb_filenum.Text.Length - 1 “ 完成！“）;
        }

        private void trackBar1_Scroll（object sender EventArgs e）
        {
            lb_thdval.Text = trackBar1.Value.ToString（）;
        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2014-03-05 11:10  Pic2val\
     目录           0  2014-03-05 11:10  Pic2val\Pic2Val\
     目录           0  2014-03-05 11:10  Pic2val\Pic2Val\Pic2Val\
     文件         911  2013-12-17 18:05  Pic2val\Pic2Val\Pic2Val.sln
     文件       31744  2013-12-18 17:19  Pic2val\Pic2Val\Pic2Val.v11.suo
     文件         187  2013-12-17 18:05  Pic2val\Pic2Val\Pic2Val\App.config
     目录           0  2014-03-05 11:10  Pic2val\Pic2Val\Pic2Val\bin\
     目录           0  2014-03-05 11:10  Pic2val\Pic2Val\Pic2Val\bin\Debug\
     目录           0  2014-03-05 11:10  Pic2val\Pic2Val\Pic2Val\bin\Debug\app.publish\
     目录           0  2014-03-05 11:10  Pic2val\Pic2Val\Pic2Val\bin\Debug\app.publish\Application Files\
     目录           0  2014-03-05 11:10  Pic2val\Pic2Val\Pic2Val\bin\Debug\app.publish\Application Files\Pic2Val_1_0_0_0\
     文件         187  2013-12-17 18:05  Pic2val\Pic2Val\Pic2Val\bin\Debug\app.publish\Application Files\Pic2Val_1_0_0_0\Pic2Val.exe.config.deploy
     文件       10752  2013-12-17 18:56  Pic2val\Pic2Val\Pic2Val\bin\Debug\app.publish\Application Files\Pic2Val_1_0_0_0\Pic2Val.exe.deploy
     文件        7144  2013-12-17 18:56  Pic2val\Pic2Val\Pic2Val\bin\Debug\app.publish\Application Files\Pic2Val_1_0_0_0\Pic2Val.exe.manifest
     文件        5619  2013-12-17 18:56  Pic2val\Pic2Val\Pic2Val\bin\Debug\app.publish\Pic2Val.application
     文件      432072  2013-12-17 18:56  Pic2val\Pic2Val\Pic2Val\bin\Debug\app.publish\setup.exe
     文件        1822  2013-12-18 17:18  Pic2val\Pic2Val\Pic2Val\bin\Debug\Pic2Val.application
     文件       11264  2013-12-18 17:18  Pic2val\Pic2Val\Pic2Val\bin\Debug\Pic2Val.exe
     文件         187  2013-12-17 18:05  Pic2val\Pic2Val\Pic2Val\bin\Debug\Pic2Val.exe.config
     文件        3417  2013-12-18 17:18  Pic2val\Pic2Val\Pic2Val\bin\Debug\Pic2Val.exe.manifest
     文件       26112  2013-12-18 17:18  Pic2val\Pic2Val\Pic2Val\bin\Debug\Pic2Val.pdb
     文件        1822  2013-12-18 17:18  Pic2val\Pic2Val\Pic2Val\bin\Debug\Pic2Val.vshost.application
     文件       22984  2013-12-18 17:18  Pic2val\Pic2Val\Pic2Val\bin\Debug\Pic2Val.vshost.exe
     文件         187  2013-12-17 18:05  Pic2val\Pic2Val\Pic2Val\bin\Debug\Pic2Val.vshost.exe.config
     文件        3417  2013-12-18 17:18  Pic2val\Pic2Val\Pic2Val\bin\Debug\Pic2Val.vshost.exe.manifest
     文件        2993  2013-12-18 17:18  Pic2val\Pic2Val\Pic2Val\Form1.cs
     文件        7219  2013-12-18 17:14  Pic2val\Pic2Val\Pic2Val\Form1.Designer.cs
     文件        5817  2013-12-18 17:14  Pic2val\Pic2Val\Pic2Val\Form1.resx
     目录           0  2014-03-05 11:10  Pic2val\Pic2Val\Pic2Val\obj\
     目录           0  2014-03-05 11:10  Pic2val\Pic2Val\Pic2Val\obj\Debug\
     文件        1278  2013-12-18 17:03  Pic2val\Pic2Val\Pic2Val\obj\Debug\DesignTimeResolveAssemblyReferences.cache
............此处省略24个文件信息