form1.cs

用小波变换对图象（256×256 灰度）做处理。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace PicYaSuo
{
    public partial class Form1 : Form
    {
        public string[] picpathlist;
        public string savepath;
        public int c;
        public int witdh, height, persent;
        public Image img;
        public Bitmap bmp;
        public Graphics grap;
        public bool stop = false;
        public bool runing = false;
        public int pasttime = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {

            openFileDialog1.ShowDialog();
        }

        private void openFileDialog1_FileOk(object sender, CancelEventArgs e)
        {
            textBox1.Text="";
            for (int i = 0; i < openFileDialog1.FileNames.Length; i++)
            {
                textBox1.Text += openFileDialog1.FileNames[i].ToString();
            }
            picpathlist = openFileDialog1.FileNames;
        }

        private void button3_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog folderBrowserDialog1 = new FolderBrowserDialog();
            folderBrowserDialog1.Description = "请选择保存输出图象路径";
            folderBrowserDialog1.ShowNewFolderButton = true;
            DialogResult result = folderBrowserDialog1.ShowDialog();
            if (result == DialogResult.OK)
            {
                if (folderBrowserDialog1.SelectedPath.ToString() != "")
                {
                    textBox7.Text = folderBrowserDialog1.SelectedPath.ToString();
                }
            }

        }

        public void YaSuoIt()
        {

            if (runing)
            {
                
                button2.Text = "开始";
                //progressBar1.Value = 0;
                runing = false;
                return;
            }
            else
            {                
                button2.Text = "停止";                
            }
            pasttime = 0;
            runing = true;
            if (picpathlist==null||picpathlist.Length<1)
            {
                MessageBox.Show("您还没有选择要压缩的图片！");
                button2.Text = "开始";
                progressBar1.Value = 0;
                runing = false;
                return;
            }
            if (textBox7.Text=="")
            {
                MessageBox.Show("您还没有选择要图片的保存路径！");
                button2.Text = "开始";
                progressBar1.Value = 0;
                runing = false;
                return;
            }
            progressBar1.Maximum = picpathlist.Length;
            progressBar1.Value = 0;
            for (int i = 0; i < picpathlist.Length; i++)
            {
                progressBar1.Value = i + 1;
                Application.DoEvents();
                if (!YaSuo(picpathlist[i].ToString(), textBox7.Text.ToString() + "\\" + picpathlist[i].Substring(picpathlist[i].LastIndexOf('\\'))))
                {
                    button2.Text = "开始";
                    progressBar1.Value = 0;
                    runing = false;
                    return;
                }
            }
            button2.Text = "开始";
            progressBar1.Value = 0;
            runing = false;            
            MessageBox.Show("Grearo恭喜您,大功告成！");
            
        }

        public bool YaSuo(string frompath, string topath)
        {            
            img = Image.FromFile(frompath);
            
            
            switch (c)
            {
                case 1:
                    try
                    {
                        witdh = Convert.ToInt32(textBox2.Text);
                    }
                    catch
                    {                        
                        MessageBox.Show("参数必须为整数!");
                        return false;
                    }
                    height = img.Height * witdh / img.Width;
                    break;
                case 2:
                    try
                    {
                        height = Convert.ToInt32(textBox3.Text);
                    }
                    catch
                    {
                        MessageBox.Show("参数必须为整数!");
                        return false;
                    }
                    witdh = img.Width * height / img.Height;
                    break;
                case 3:
                    try
                    {
                        witdh = img.Width * Convert.ToInt32(textBox4.Text) / 100;
                        height = img.Height * Convert.ToInt32(textBox4.Text) / 100;
                    }
                    catch
                    {
                        MessageBox.Show("参数必须为整数!");
                        return false;
                    }
                    break;
                case 4:
                    try
                    {
                        witdh = Convert.ToInt32(textBox5.Text);
                        height = Convert.ToInt32(textBox6.Text);
                    }
                    catch
                    {
                        
                        MessageBox.Show("参数必须为整数!");
                        return false;
                    }
                    break;
                default:                    
                    MessageBox.Show("未设置输出方式!");
                    return false;
            }

            bmp = new Bitmap(witdh, height);
            grap = Graphics.FromImage(bmp);
            grap.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            grap.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
            grap.DrawImage(img, new Rectangle(0, 0, witdh, height));

            bmp.Save(topath, System.Drawing.Imaging.ImageFormat.Jpeg);

            img.Dispose();
            bmp.Dispose();
            grap.Dispose();
            //img = null;
            //bmp = null;
            //grap = null;
            return true;
        }

        

        private void checkBox1_MouseClick(object sender, MouseEventArgs e)
        {
            checkBox1.Checked = false;
            checkBox2.Checked = false;
            checkBox3.Checked = false;
            checkBox4.Checked = false;
            checkBox1.Checked = true;
            c = 1;
        }

        private void checkBox2_MouseClick(object sender, MouseEventArgs e)
        {
            checkBox1.Checked = false;
            checkBox2.Checked = false;
            checkBox3.Checked = false;
            checkBox4.Checked = false;
            checkBox2.Checked = true;
            c = 2;
        }

        private void checkBox3_MouseClick(object sender, MouseEventArgs e)
        {
            checkBox1.Checked = false;
            checkBox2.Checked = false;
            checkBox3.Checked = false;
            checkBox4.Checked = false;
            checkBox3.Checked = true;
            c = 3;
        }

        private void checkBox4_MouseClick(object sender, MouseEventArgs e)
        {
            checkBox1.Checked = false;
            checkBox2.Checked = false;
            checkBox3.Checked = false;
            checkBox4.Checked = false;
            checkBox4.Checked = true;
            c = 4;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            YaSuoIt();
        }

        private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
        {
            if ((e.KeyChar < 48 || e.KeyChar > 57) && (e.KeyChar != 8))
                e.Handled = true;
            base.OnKeyPress(e);
        }

        private void Form1_Load(object sender, EventArgs e)
        {
             timer1.Start();
             Application.DoEvents();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (runing)
            {
                pasttime++;
                label6.Text = pasttime.ToString();
                Application.DoEvents();
            }
        }

        
        

        
    }
}