基于运动的网络摄像头记录.wpf正在使用afurge

Question

我制作了一个简单的程序，可以显示网络摄像头的视频，并可以检测提要中的运动，但我在理解检测到运动时如何从网络摄像头进行录制时遇到了问题。我已经在Aforge.Net网站上搜索过了，但我发现很难理解我需要做什么。当检测到运动时，我想开始录制到预先确定的目的地，当没有检测到运动，我想继续录制一段时间，然后停止。这是我到目前为止的计划的一部分。。。

请你帮我解释一下，如果我需要提供更多信息或代码，请告诉我。感谢

$//打开视频源

    private void OpenVideoSource(IVideoSource source)
    {
        // set busy cursor
        //this.Cursor = Cursors.WaitCursor;
        // close previous video source
        CloseVideoSource();
        //motionDetectionType = 1;
        //SetMotionDetectionAlgorithm(new TwoFramesDifferenceDetector());
        //motionProcessingType = 1;
        //SetMotionProcessingAlgorithm(new MotionAreaHighlighting());
        // start new video source
        videoSourcePlayer.VideoSource = new AsyncVideoSource(source);

        videoSourcePlayer.NewFrame +=new VideoSourcePlayer.NewFrameHandler(videoSourcePlayer_NewFrame);
        //videoSourcePlayer.DesiredFrameRate = 30;
        //webcam's default frame rate will be used instead of above code that has an error

        // create new video file
        writer.Open("test.avi", width, height, 25, VideoCodec.MPEG4);
        // create a bitmap to save into the video file
        Bitmap image = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
        // write 1000 video frames
        for (int i = 0; i < 1000; i++)
        {
            image.SetPixel(i % width, i % height, System.Drawing.Color.Red);
            writer.WriteVideoFrame(image);
        }
        writer.Close();

        try
        {
            videoSourcePlayer.Start();
            //motionAlarmLevel = sldMotionSensitivity.Value / 100;
        }
        catch (Exception x)
        {
            System.Windows.MessageBox.Show(x.ToString());
        }
        //videoSource.DesiredFrameSize = new System.Drawing.Size(800,600);
        videoSourcePlayer.BorderColor = System.Drawing.Color.Blue;
        // reset statistics
        statIndex = statReady = 0;
        // start timers
        clock.Start();
        //alarm.Start();
        videoSource = source;
        //this.Cursor = Cursors.Default;
    }
    // Close current video source
    private void CloseVideoSource()
    {
        // set busy cursor
        //this.Cursor = Cursors.WaitCursor;
        // stop current video source
        videoSourcePlayer.SignalToStop();
        // wait 2 seconds until camera stops
        for (int i = 0; (i < 50) && (videoSourcePlayer.IsRunning); i++)
        {
            Thread.Sleep(100);
        }
        if (videoSourcePlayer.IsRunning)
            videoSourcePlayer.Stop();
        // stop timers
        clock.Stop();
        //alarm.Stop();
        motionHistory.Clear();
        // reset motion detector
        if (detector != null)
            detector.Reset();
        //videoSourcePlayer.BorderColor = System.Drawing.Color.Red;
        //this.Cursor = Cursors.Default;
    }
    // New frame received by the player
     void videoSourcePlayer_NewFrame(object sender, ref Bitmap image)
    {
        lock (this)
        {
            if (detector != null)
            {
                //motion detected
                if (detector.ProcessFrame(image) > motionAlarmLevel)
                {
                    //float motionLevel = detector.ProcessFrame(image);
                    videoSourcePlayer.BorderColor = System.Drawing.Color.Red;
                    Dispatcher.BeginInvoke(new ThreadStart(delegate { lblMotionDetected.Content = "Motion Detected"; }));
                    //lblMotionDetected.Content = "Motion Detected";
                    //flash = (int)(2 * (1000 / alarm.Interval));
                }
                // no motion detected
                if (detector.ProcessFrame(image) < motionAlarmLevel)
                {
                    videoSourcePlayer.BorderColor = System.Drawing.Color.Black;
                    Dispatcher.BeginInvoke(new ThreadStart(delegate { lblMotionDetected.Content = "No Motion Detected"; }));
                }

                //    if (motionLevel > motionAlarmLevel)
                //    {
                //        // flash for 2 seconds
                //        timer.Start();
                //    }
            }
        }
    }

Answer 1

有一个开源项目叫做ispy-http://www.ispyconnect.com正是这样。源文件可供下载。