/// <summary>

         /// 点击按钮打开指定图片

         /// </summary>

         /// <param name="sender"></param>

         /// <param name="e"></param>

         private void OpenImage_Click(object sender, EventArgs e)

         {

             OpenFileDialog openFileDialog = new OpenFileDialog();

             if (openFileDialog.ShowDialog() == DialogResult.OK)

             {

                 try

                 {

                     capture = new Capture(openFileDialog.FileName);

                     fps = (int)capture.GetCaptureProperty(CapProp.Fps);

                     Application.Idle += new EventHandler(ProcessFrame);

                 }

                 catch (Exception exp)

                 {

                     MessageBox.Show(exp.Message);

                 }

             }

         }

         private void ProcessFrame(object sender, EventArgs e)

         {

             Mat frame = capture.QueryFrame();

             if (frame != null)

             {

                 //为使播放顺畅，添加以下延时

                 System.Threading.Thread.Sleep((int)(1000.0 /fps-));

                 picWindow.Image = frame;

             }

             GC.Collect();

         }