1. 本例中,我们需要导入:Emgu.CV.UI.dll、Emgu.CV.World.dll
2. 然后在程序中导入命名空间:using Emgu.CV; using System.Diagnostics;
3. 然后拖3个ImageBox到主窗体,拖3个TextBox和4个Button到主窗体,如图所示:
功能说明:点击button1添加图片并显示到ImageBox1中;点击button2将ImageBox1中的图片去色,并将灰度图显示到ImageBox2中;点击button3直接载入新的图片并去色,然后显示到ImageBox3中;点击button4清除所有的图片和文本框中的内容。
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Diagnostics;
- using System.Drawing;
- using System.Linq;
- using System.Text;
- using System.Windows.Forms;
- using Emgu.CV;
- namespace WindowsFormsApplication8
- {
- 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.Restart();
- 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;
- }
- }
- }
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运行结果如下:
其它:
创建图像并显示
- Image<Bgr, byte> image = new Image<Bgr, byte>(320, 240, new Bgr(0, 0, 255));
- //创建一张320*240尺寸颜色为红色的图像。
- imageBox1.Image = image;//在ImageBox1控件中显示所创建好的图像。
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加载当前环境目录下图片并显示:
- // MessageBox.Show(Environment.CurrentDirectory.ToString());
- Mat imgscr = CvInvoke.Imread(Environment.CurrentDirectory+"\\1.jpg");//读取图像
- // CvInvoke.Imshow("img", imgscr);//显示图像
- imageBox2.Image = imgscr;//在ImageBox2控件中显示所创建好的图像。
- CvInvoke.WaitKey(0);//按键等待
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