1  private void Process() 2         { 3             IplImage imgShow = new IplImage(new CvSize(mCvCapture.FrameWidth / 2, mCvCapture.FrameHeight / 2), BitDepth.U8, 3); 4  5             IplImage iplImgSrc =http://www.mamicode.com/ mCvCapture.QueryFrame(); 6             if (iplImgSrc =http://www.mamicode.com/= null) 7             { 8                 Debug.WriteLine("CvCapture QueryFrame 取像为空。"); 9                 return;10             }11 12             //反转13             Cv.Flip(iplImgSrc, iplImgSrc, FlipMode.Y);14 15             //缩小图片16             IplImage iplImgSrc2 = new IplImage(new CvSize(iplImgSrc.Width / 2, iplImgSrc.Height / 2), iplImgSrc.Depth, 3);17             iplImgSrc.Resize(iplImgSrc2);18             iplImgSrc =http://www.mamicode.com/ iplImgSrc2;19 20             iplImgSrc.Copy(imgShow);21 22             //图像预处理23             IplImage imgGray = new IplImage(iplImgSrc.GetSize(), BitDepth.U8, 1);24             iplImgSrc.CvtColor(imgGray, ColorConversion.RgbaToGray);25             //Cv.ReleaseImage(iplImgSrc);26 27             //imgGray.Smooth(imgGray, SmoothType.Gaussian, 5);28             //imgGray.Threshold(imgGray, 128, 255, ThresholdType.Binary);29             //Cv.Threshold(imgGray, imgGray, 100, 255, ThresholdType.Binary);30 31             iplImgSrc =http://www.mamicode.com/ imgGray;32             //----------------------------------------------------------------------33 34             #region 定位跟踪35 36             mWagSearchFlow.mInputImage = iplImgSrc;37             mWagSearchFlow.Run();38 39             #endregion40 41             //----------------------------------------------------------------------42 43             CvPoint cvPointFocusCenter = new CvPoint((int)mWagSearchFlow.mResultPoint[0].X,44               (int)mWagSearchFlow.mResultPoint[0].Y);45 46             //Cv.DrawCircle(imgShow, cvPointFocusCenter, 4, CvColor.Red);47 48             CvPoint2D32f calcMousePos = this.mPointImageToScreen.CalculateZoomPos(cvPointFocusCenter, this.mPointImageToScreen.mPointMouseSet);49             this.mPointImageToScreen.mPointMouseSet = calcMousePos;50 51 52             if (this.mPointImageToScreen.mbEnabledControlCursor)53             {54                 WagPointImageToScreen.SetCursorPos((int)calcMousePos.X, (int)calcMousePos.Y);//控制鼠标位置55 56             }57 58 59             //|| mWagSearchFlow.Lost60             //wagDisplayPoint1.SetPaintHandler(WagPaintHandlerType.CenterSelect);61 62             bool bStop = this.mPointImageToScreen.CheckMoveStop();63             if (bStop)64             {65                 this.mPointImageToScreen.mbEnabledControlCursor = false;66                 mlFreeTimeStart = Environment.TickCount;67             }68 69             if (this.mbAutoControl)70             {71                 if (!this.mPointImageToScreen.mbEnabledControlCursor)72                 {73                     long nDiff = Environment.TickCount - mlFreeTimeStart;74                     if (nDiff > mlFreeTimeMax)75                     {76                         this.mPointImageToScreen.mbEnabledControlCursor = true;77                     }78                 }79             }80 81             this.Invoke(new Action(82                 delegate83                 {84                     this.wagDisplayPoint1.UpdateImage(imgShow.ToBitmap());85                 }));86 87             wagDisplayPoint1.SetPaintPoint((int)mWagSearchFlow.mResultPoint[0].X, (int)mWagSearchFlow.mResultPoint[0].Y);88 89             Cv.ReleaseImage(imgShow);90 91             //Cv.ReleaseImage(iplImgSrc);92             //Cv.ReleaseImage(null);93 94             Thread.Sleep(5);95         }

 public void Run()        {            mInputImage.Copy(m_CvArr_Curr);            if (m_CvArr_Prev == null)            {                throw new ArgumentNullException("m_CvArr_Prev");            }            if (m_CvArr_Curr == null)            {                throw new ArgumentNullException("m_CvArr_Curr");            }            if (m_CvPoint_PrevFeatures == null)            {                throw new ArgumentNullException("m_CvPoint_PrevFeatures");            }            //CvWindow win = new CvWindow(imgGray);            //win.ShowImage(imgGray);            //System.Windows.Forms.Application.DoEvents();            //Thread.Sleep(1000000);            //交换坐标            this.SwapPoints(ref this.m_CvPoint_CurrFeatures[0], ref this.m_CvPoint_PrevFeatures[0]);            //执行            try            {                Cv.CalcOpticalFlowPyrLK(                    m_CvArr_Prev,               //(01) 在时间 t 的第一帧。First frame, at time t.                    m_CvArr_Curr,               //(02) 在时间 t + dt 的第二个帧。Second frame, at time t + dt.                    m_CvArr_PrevPyr,            //(03) 金字塔的第一帧缓冲。Buffer for the pyramid for the first frame. If the pointer is not null , the buffer must have a sufficient size to store the pyramid from level 1 to level #level ; the total size of (image_width+8)*image_height/3 bytes is sufficient.                    m_CvArr_CurrPyr,            //(04) 类似于 prevPyr，用于第二个帧。Similar to prev_pyr, used for the second frame.                    m_CvPoint_PrevFeatures,     //(05) 流量需要被发现的点数组。Array of points for which the flow needs to be found.                    out m_CvPoint_CurrFeatures, //(06) 二维数组指向包含计算新职位的输入特征中第二个图像。Array of 2D points containing calculated new positions of input features in the second image.                    _sizeWin,                   //(07) 每个金字塔级别搜索窗口的大小。Size of the search window of each pyramid level.                    _nlevel,                    //(08) 最大的金字塔级别编号。如果为 0，则不使用金字塔 （单水平），如果为 1，两个级别使用，等等。Maximal pyramid level number. If 0 , pyramids are not used (single level), if 1 , two levels are used, etc.                    out status,                 //(09) Array. Every element of the array is set to 1 if the flow for the corresponding feature has been found, 0 otherwise.                    out trackError,             //(10) Array of double numbers containing difference between patches around the original and moved points. Optional parameter; can be NULL .                    criteria,                   //(11) 指定何时应停止流动寻找每个点上每个金字塔级别的迭代过程。Specifies when the iteration process of finding the flow for each point on each pyramid level should be stopped.                    flags                       //(12) 混杂。Miscellaneous flags.                    );            }            catch (Exception ex)            {                string sErr = "CalcOpticalFlowPyrLK : --> " + ex.Message;                Debug.WriteLine(sErr);            }            Debug.WriteLine("追踪状态: --> " + status[0].ToString());            if (!mbLost && status[0] == 0)            {                bool bLost = false;                bLost = true;                if (bLost)                {                    mbLost = true;                    Debug.WriteLine("失去焦点: ---> " + DateTime.Now.ToString("yyyyMMdd_HHmmss_ffff"));                    return;                }            }            this.Limit(ref this.m_CvPoint_CurrFeatures[0], this.m_CvPoint_PrevFeatures[0]);            CvPoint2D32f p = new CvPoint2D32f(this.m_CvPoint_CurrFeatures[0].X, this.m_CvPoint_CurrFeatures[0].Y);            this.mResultPoint[0] = p;            this.SwapImages(ref m_CvArr_Curr, ref m_CvArr_Prev);            this.SwapImages(ref m_CvArr_CurrPyr, ref m_CvArr_PrevPyr);        }