用Emgu CV模板匹配等一些简单应用

来源：互联网发布：高中数学网络教学编辑：程序博客网时间：2024/06/05 19:39

此程序是学习王先荣朋友的文章，里面很详细，有兴趣的朋友可以看看：http://www.cnblogs.com/xrwang/archive/2010/02/09/HowToUseContour.html

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

namespace Chuanlin2012._01
{
    public partial class MainFrm : Form
    {
        public Image<Bgr, byte> src;
        public Image<Bgr, byte> subsrc;

        public MainFrm()
        {
            InitializeComponent();
        }

        private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            OpenFileDialog opflg = new OpenFileDialog();
            opflg.Filter = "所有文件|*.*";
            if (opflg.ShowDialog() == DialogResult.OK)
            {
                Image<Bgr, byte> rgbimg1 = new Image<Bgr, byte>(opflg.FileName);
                imageBox1.Image = rgbimg1;
                src = rgbimg1;

            }

}

        private void 保存ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (imageBox1.Image != null)
            {
                SaveFileDialog sfdlg = new SaveFileDialog();
                sfdlg.Filter = "bmp文件|*.bmp";
                sfdlg.FilterIndex = 2;
                sfdlg.RestoreDirectory = true;

                if (sfdlg.ShowDialog() == DialogResult.OK)
                {
                    string fname = sfdlg.FileName;
                    Bitmap bmp = imageBox1.Image.Bitmap;
                    bmp.Save(fname, System.Drawing.Imaging.ImageFormat.Bmp);
                }
            }
            else
            {
                System.Windows.Forms.MessageBox.Show("请先打开图像！");
                return;
            }

}

   private void 退出ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            this.Close();

}

        private void sobel算子ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (imageBox1.Image != null)
            {
                Image<Bgr, float> imgsoble = src.Sobel(0, 1, 3);
                imageBox1.Image = imgsoble;
            }
            else
            {
                System.Windows.Forms.MessageBox.Show("请先打开图像！");
                return;
            }

        }

                private void laplace算子ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (imageBox1.Image != null)
            {
                Image<Bgr, float> imglaplace = src.Laplace(3);
                imageBox1.Image = imglaplace;
            }
            else
            {
                System.Windows.Forms.MessageBox.Show("请先打开图像！");
                return;
            }

}

             private void canny算子ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (imageBox1.Image != null)
            {

                //CannyFrm cfrm = new CannyFrm();
                //cfrm.Show();
                double m = 90;
                double n = 255;
                Gray threshold1 = new Gray(m);
                Gray threshold2 = new Gray(n);
                Image<Gray, byte> imggray = src.Convert<Gray, byte>();
                Image<Gray, byte> imgcanny = imggray.Canny(threshold1, threshold2);

                imageBox1.Image = imgcanny;

            }
            else
                System.Windows.Forms.MessageBox.Show("请先输入图像！");
        }

        private void 二值化后绘制图像轮廓ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (imageBox1.Image != null)
            {
                Image<Gray, byte> imggray = src.Convert<Gray, byte>();
                Image<Gray, byte> img2b = imggray.ThresholdBinary(new Gray(60), new Gray(255));
                Contour<Point> contour = img2b.FindContours();        //找轮廓
                Image<Bgr, byte> imgbgr = img2b.Convert<Bgr, byte>();
                int maxLevel = 0;                                                           //绘制的轮廓深度
                imgbgr.Draw(contour, new Bgr(0, 0, 255), new Bgr(0, 0, 255), maxLevel, 1);//绘制图像轮廓
                imageBox1.Image = imgbgr;
            }
            else
                System.Windows.Forms.MessageBox.Show("请先输入图像！");
        }

        private void SmoothBlur算子ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (imageBox1.Image != null)
            {
                Image<Bgr, byte> imgsmoot = src.SmoothBlur(9, 9);
                imageBox1.Image = imgsmoot;

            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog opdlg = new OpenFileDialog();
            opdlg.Filter = "所有文件|*.*";
            if (opdlg.ShowDialog() == DialogResult.OK)
            {
                Image<Bgr, byte> imgrgb = new Image<Bgr, byte>(opdlg.FileName);
                imageBox2.Image = imgrgb;
                subsrc = imgrgb;
            }
        }

//六种模板匹配方法

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            if (imageBox1.Image != null && imageBox2.Image != null)
            {
                double time;
                double totalTime = 0;
                Stopwatch sw = new Stopwatch();
                sw.Start();

                //输入图像
                Image<Bgr, Byte> imageInput =src ;
                //模板图像
                Image<Bgr, Byte> imageTemplate = subsrc;

                //匹配方式数组
                TM_TYPE tmType = TM_TYPE.CV_TM_CCOEFF;

//输出图像（匹配结果）
Image<Gray, Single> imageResult = imageInput.MatchTemplate(imageTemplate,tmType);

                //归一化结果
                //CvInvoke.cvNormalize(imageResult.Ptr, imageResult.Ptr, 1d, 0d, NORM_TYPE.CV_MINMAX, IntPtr.Zero);
                //imageBox1.Image = imageResult;

                //找到最匹配的点，以及该点的值
                double bestValue;
                Point bestPoint;
                FindBestMatchPointAndValue(imageResult, tmType, out bestValue, out bestPoint);
                //在最匹配的点附近画一个跟模板一样大的矩形
                Rectangle rect = new Rectangle(new Point(bestPoint.X - imageTemplate.Size.Width / 2, bestPoint.Y - imageTemplate.Size.Height / 2), imageTemplate.Size);
                imageResult.Draw(rect, new Gray(bestValue), 2);
                imageBox1.Image = imageResult;
                time = sw.Elapsed.TotalMilliseconds;
                totalTime += time;
                sw.Stop();
                textBox1.Text = totalTime.ToString();
                sw.Reset();

            }
            else
                System.Windows.Forms.MessageBox.Show("请先输入图像！");

        }

         private void radioButton2_CheckedChanged(object sender, EventArgs e)
         {
             if (imageBox1.Image != null && imageBox2.Image != null)
             {
                 //输入图像
                 Image<Bgr, Byte> imageInput = src;
                 //模板图像
                 Image<Bgr, Byte> imageTemplate = subsrc;

TM_TYPE tmtype = TM_TYPE.CV_TM_CCORR;