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1. 本例中,我們需要匯入:Emgu.CV.UI.dll、Emgu.CV.World.dll
2. 然后在程式中匯入命名空間:using Emgu.CV; using System.Diagnostics;
3. 然后拖3個ImageBox到主表單,拖3個TextBox和4個Button到主表單,如圖所示:
功能說明:點擊button1添加圖片并顯示到ImageBox1中;點擊button2將ImageBox1中的圖片去色,并將灰度圖顯示到ImageBox2中;點擊button3直接載入新的圖片并去色,然后顯示到ImageBox3中;點擊button4清除所有的圖片和文本框中的內容,
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 = "選擇圖片";
lvse.InitialDirectory = "";
lvse.Filter = "圖片檔案|*.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 = "選擇圖片";
lvse.InitialDirectory = "";
lvse.Filter = "圖片檔案|*.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;
}
}
}
運行結果如下:

其它:
創建影像并顯示
Image<Bgr, byte> image = new Image<Bgr, byte>(320, 240, new Bgr(0, 0, 255));
//創建一張320*240尺寸顏色為紅色的影像,
imageBox1.Image = image;//在ImageBox1控制元件中顯示所創建好的影像,
加載當前環境目錄下圖片并顯示:
// MessageBox.Show(Environment.CurrentDirectory.ToString());
Mat imgscr = CvInvoke.Imread(Environment.CurrentDirectory+"\\1.jpg");//讀取影像
// CvInvoke.Imshow("img", imgscr);//顯示影像
imageBox2.Image = imgscr;//在ImageBox2控制元件中顯示所創建好的影像,
CvInvoke.WaitKey(0);//按鍵等待
轉載請註明出處,本文鏈接:https://www.uj5u.com/net/212377.html
標籤:C#
