Emgu Cv示例

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

using System.Diagnostics;  
using Emgu.CV;  
using Emgu.Util;  

namespace EMGU_STUDY_1._0  
{  
    public partial class Form1 : Form  
    {  
        Mat img1 = null;  
        Mat img2 = null;  
        Mat img3 = null;  
        Stopwatch sw = new Stopwatch();  
        public Form1()  
        {  
            InitializeComponent();  
        }  

        private void button1_Click(object sender, EventArgs e)  
        {  
            OpenFileDialog lvse = new OpenFileDialog();  
            lvse.Title = "选择图片";  
            lvse.InitialDirectory = "";  
            lvse.Filter = "图片文件|*.bmp;*.jpg;*.jpeg;*.gif;*.png";  
            lvse.FilterIndex = 1;  

            if (lvse.ShowDialog() == DialogResult.OK)  
            {  
                textBox1.Text = null;  
                sw.Reset();  
                sw.Start();  

                img1 = CvInvoke.Imread(lvse.FileName, Emgu.CV.CvEnum.LoadImageType.AnyColor);  
                imageBox1.Width = img1.Width / 2;  
                imageBox1.Height = img1.Height / 2;  
                imageBox1.Image = img1;  

                sw.Stop();  
                textBox1.Text = sw.ElapsedMilliseconds.ToString();  
            }  

        }  

        private void button2_Click(object sender, EventArgs e)  
        {  
            if (img1 != null)  
            {  
                img2 = new Mat(img1.Rows, img1.Cols, Emgu.CV.CvEnum.DepthType.Cv8U, 1);  
                textBox2.Text = null;  
                sw.Reset();  
                sw.Start();  

                CvInvoke.CvtColor(img1, img2, Emgu.CV.CvEnum.ColorConversion.Bgr2Gray);  
                imageBox2.Width = img2.Width / 2;  
                imageBox2.Height = img2.Height / 2;  
                imageBox2.Image = img2;  

                sw.Stop();  
                textBox2.Text = sw.ElapsedMilliseconds.ToString();  
            }  
        }  

        private void button3_Click(object sender, EventArgs e)  
        {  
            textBox3.Text = null;  
            OpenFileDialog lvse = new OpenFileDialog();  
            lvse.Title = "选择图片";  
            lvse.InitialDirectory = "";  
            lvse.Filter = "图片文件|*.bmp;*.jpg;*.jpeg;*.gif;*.png";  
            lvse.FilterIndex = 1;  
            if (lvse.ShowDialog() == DialogResult.OK)  
            {  
                sw.Reset();  
                sw.Start();  

                img3 = CvInvoke.Imread(lvse.FileName, Emgu.CV.CvEnum.LoadImageType.Grayscale);  
                imageBox3.Width = img3.Width/2;  
                imageBox3.Height = img3.Height/2;  
                imageBox3.Image = img3;  

                sw.Stop();  
                textBox3.Text = sw.ElapsedMilliseconds.ToString();  
            }  
        }  

        private void button4_Click(object sender, EventArgs e)  
        {  
            img1 = null;  
            img2 = null;  
            img3 = null;  
            imageBox1.Image = null;  
            imageBox2.Image = null;  
            imageBox3.Image = null;  
            textBox1.Text = null;  
            textBox2.Text = null;  
            textBox3.Text = null;  
        }  
    }  
}