实例介绍
【实例简介】通过摄像头检测运动，监测运动的物体
【实例截图】
【核心代码】
1 | <span><span>使用AForge.Video;</span></span><span></span><span><span> 使用AForge.Video.DirectShow;</span></span><span></span><span><span> 使用AForge.Vision.Motion;</span></span><span></span><span><span> 使用系统;</span></span><span></span><span><span> 使用System.Collections.Generic;</span></span><span></span><span><span> 使用System.ComponentModel;</span></span><span></span><span><span> 使用System.Data;</span></span><span></span><span><span> 使用System.Drawing;</span></span><span></span><span><span> 使用System.Linq;</span></span><span></span><span><span> 使用System.Text;</span></span><span></span><span><span> 使用System.Threading;</span></span><span></span><span><span> 使用System.Threading.Tasks;</span></span><span></span><span><span> 使用System.Windows.Forms;</span></span><span></span> <span></span><span><span> 命名空间Vidoevision</span></span><span></span><span><span> {</span></span><span></span><span><span> 公共部分类Form1：Form</span></span><span></span><span><span> {</span></span><span></span><span><span> 私人只读MotionDetector _detector =新的MotionDetector（新的TwoFramesDifferenceDetector（），新的MotionAreaHighlighting（））;</span></span><span></span> <span></span><span><span> private int _statIndex;</span></span><span></span><span><span> private int _statReady;</span></span><span></span><span><span> private readonly int [] _statCount = new int [15];</span></span><span></span><span><span> int _flga;</span></span><span></span> public Form1()<span></span> {<span></span> InitializeComponent();<span></span> CheckForIllegalCrossThreadCalls = false;<span></span> }<span></span> public Form1(int flga)<span></span> { <span></span> InitializeComponent();<span></span> _flga = flga;<span></span> }<span></span> private void OpenVideoSource(IVideoSource source)<span></span> {<span></span> Cursor = Cursors.WaitCursor;<span></span> CloseVideoSource();<span></span> videoSourcePlayer.VideoSource = new AsyncVideoSource(source);<span></span> videoSourcePlayer.Start();<span></span> _statReady = 0;<span></span> _statIndex = 0;<span></span> timer.Start();<span></span> Cursor = Cursors.Default;<span></span> }<span></span> private void btnStart_Click(object sender, EventArgs e)<span></span> { <span></span> FrmCaptureDevice videoCaptureDeviceForm = new FrmCaptureDevice(); <span></span> if (videoCaptureDeviceForm.ShowDialog() == DialogResult.OK)<span></span> {<span></span> OpenVideoSource(new VideoCaptureDevice(videoCaptureDeviceForm.SelectedDevice)); <span></span> btnStart.Text = "停止";<span></span> }<span></span> else<span></span> {<span></span> btnStart.Text = "开始";<span></span> CloseVideoSource();<span></span> <span></span> }<span></span> <span></span> <span></span> }<span></span> <span></span> private void CloseVideoSource()<span></span> {<span></span> Cursor = Cursors.WaitCursor;<span></span> videoSourcePlayer.SignalToStop();<span></span> <span></span> for (int i = 0; i < 50 && videoSourcePlayer.IsRunning; i )<span></span> {<span></span> Thread.Sleep(100);<span></span> }<span></span> <span></span> if (videoSourcePlayer.IsRunning)<span></span> {<span></span> videoSourcePlayer.Stop();<span></span> }<span></span> <span></span> timer.Stop();<span></span> <span></span> if (_detector != null)<span></span> {<span></span> _detector.Reset();<span></span> }<span></span> <span></span> videoSourcePlayer.BorderColor = Color.Black;<span></span> Cursor = Cursors.Default;<span></span> <span></span> }<span></span> private void VideoSourcePlayerNewFrame(object sender, ref Bitmap image)<span></span> {<span></span> if (_detector == null) return;<span></span> <span></span> var motionValue = _detector.ProcessFrame(image);<span></span> if (motionValue > 0)<span></span> {<span></span> lblMotionAlert.ForeColor = Color.Red;<span></span> lblMotionAlert.Text = "检测到动作";<span></span> }<span></span> else<span></span> {<span></span> lblMotionAlert.ForeColor = Color.Green;<span></span> lblMotionAlert.Text = "未检测到移动";<span></span> }<span></span> }<span></span> <span></span> private void Form1_FormClosing(object sender, FormClosingEventArgs e)<span></span> {<span></span> CloseVideoSource();<span></span> }<span></span> <span></span> private void timer_Tick(object sender, EventArgs e)<span></span> {<span></span> IVideoSource theVideoSource = videoSourcePlayer.VideoSource;<span></span> if (theVideoSource == null) return;<span></span> <span></span><span><span> _statCount [_statIndex] = theVideoSource.FramesReceived;</span></span><span></span><span><span> _statIndex = _statIndex 1; </span></span><span></span><span><span> 如果（_statIndex> = 15）</span></span><span></span><span><span> {</span></span><span></span><span><span> _statIndex = 0;</span></span><span></span><span><span> }</span></span><span></span> <span></span><span><span> 如果（_statReady <15）</span></span><span></span><span><span> {</span></span><span></span><span><span> _statReady = _statReady 1;</span></span><span></span><span><span> } </span></span><span></span><span><span> float single = 0f;</span></span><span></span><span><span> for（int i = 0; i <_statReady; i）</span></span><span></span><span><span> {</span></span><span></span><span><span> single = single _statCount [i];</span></span><span></span><span><span> }</span></span><span></span> <span></span><span><span> single = single / _statReady;</span></span><span></span><span><span> _statCount [_statIndex] = 0;</span></span><span></span> <span></span><span><span> lblFps.Text = string.Concat（single.ToString（“F2”），“fps”）;</span></span><span></span><span><span> }</span></span><span></span> <span></span><span><span> 私人无效Form1_Load（对象发件人，EventArgs e）</span></span><span></span><span><span> {</span></span><span></span> <span></span><span><span> }</span></span><span></span> <span></span><span><span> }</span></span><span></span><span><span> }</span></span><span><span> </span></span> |
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