1 using System;
 2 using System.Collections.Generic;
 3 using System.Windows;
 4 using System.Windows.Threading;
 5 using Emgu.CV;
 6 using Emgu.CV.Structure;
 7 using Emgu.CV.WPF;
 8 using Rectangle = System.Drawing.Rectangle;
 9
10 namespace ImageDetect_ATAW
11 {
12     /// <summary>
13     /// MainWindow.xaml 的交互逻辑
14     /// </summary>
15     public partial class MainWindow : Window
16     {
17         private Capture _capture;
18         private Image<Bgr, byte> _currentFrame;
19         private Image<Bgr, byte> _previousFrame;
20         private int Threshold = 40;
21         private DispatcherTimer _timer = new DispatcherTimer();
22         //private int[] _rectPosition = {130, 240, 120, 150};
23         public MainWindow()
24         {
25             InitializeComponent();
26             _capture = new Capture();
27         }
28
29         private void buttonOpen_Click(object sender, RoutedEventArgs e)
30         {
31             _capture.QueryFrame();
32             _previousFrame = _capture.QueryFrame();
33             _timer.Interval = new TimeSpan(0, 0, 0, 0, 40);
34             _timer.Tick += timer_Tick;
35             _timer.Start();
36         }
37
38         void timer_Tick(object sender, EventArgs e)
39         {
40             _currentFrame = _capture.QueryFrame().Clone();
41             var _currentFrameCopy = _currentFrame.Clone();
42             //_currentFrameCopy.Draw(new Rectangle(_rectPosition[0],_rectPosition[1],_rectPosition[2],_rectPosition[3]),new Bgr(0,0,255), 2);
43             imageBox1.Source = BitmapSourceConvert.ToBitmapSource(_currentFrameCopy);
44             FrameDiff(_previousFrame,_currentFrameCopy);
45         }
46
47         private void FrameDiff(Image<Bgr, byte> preFrame, Image<Bgr, byte> curFrame)
48         {
49             //var position = new int[4];
50             var curGrayImage = curFrame.Convert<Gray, byte>();
51             var preGrayImage = preFrame.Convert<Gray, byte>();
52             var diffImage = curGrayImage.AbsDiff(preGrayImage);
53             var imageB = diffImage.ThresholdBinary(new Gray(Threshold), new Gray(255));
54             var imageBin = imageB.Erode(2).Dilate(2);
55             var contour = imageBin.FindContours();
56             var list = new List<Rectangle>();
57
58             while (contour != null)
59             {
60                 if (contour.Area >150)
61                 {
62                     var xValue = contour.BoundingRectangle.X;
63                     var yValue = contour.BoundingRectangle.Y;
64                     var wValue = contour.BoundingRectangle.Width;
65                     var hValue = contour.BoundingRectangle.Height;
66
67                     list.Add(contour.BoundingRectangle);
68                     imageBin.Draw(new Rectangle(xValue,yValue,wValue,hValue),new Gray(255), 2);
69                 }
70                 contour = contour.HNext;
71             }
72             imageBox2.Source = BitmapSourceConvert.ToBitmapSource(imageBin);
73             _previousFrame = curFrame.Clone();
74             //return list.ToArray();
75         }
76
77         private void buttonClose_Click(object sender, RoutedEventArgs e)
78         {
79             _capture.Dispose();
80             _timer.Stop();
81         }
82
83
84     }
85 }