用kinect统计人数，基于微软的skeleton tracking

   private void SensorSkeletonFrameReady(object sender, SkeletonFrameReadyEventArgs e)               {                Skeleton[] skeletons = new Skeleton[0];                using (SkeletonFrame skeletonFrame = e.OpenSkeletonFrame())               {                     if (skeletonFrame == null)                     {                         textBox1.Text = "0";                         //return 0;                     }                     if (skeletonFrame != null)                     {                         skeletons = new Skeleton[skeletonFrame.SkeletonArrayLength];                         skeletonFrame.CopySkeletonDataTo(skeletons);                                                 //Kinect only get the position                         int noTrac = (from s in skeletons                                       where s.TrackingState == SkeletonTrackingState.PositionOnly                                       select s).Count();                         //kinect tracked                         int getTrac = (from s in skeletons                                        where s.TrackingState == SkeletonTrackingState.Tracked                                        select s).Count();                         int numberOfSkeletons = noTrac + getTrac;                         this.textBox1.Text = numberOfSkeletons.ToString();//output the number in textbox                     }                               }              using (DrawingContext dc = this.drawingGroup.Open())                {                // Draw a transparent background to set the render size                   dc.DrawRectangle(Brushes.Black, null, new Rect(0.0, 0.0, RenderWidth, RenderHeight));                    if (skeletons.Length != 0)                   {                       foreach (Skeleton skel in skeletons)                        {                            RenderClippedEdges(skel, dc);                          if (skel.TrackingState == SkeletonTrackingState.Tracked)                          {                                  this.DrawBonesAndJoints(skel, dc);                          }                          else if (skel.TrackingState == SkeletonTrackingState.PositionOnly)                          {                              dc.DrawEllipse(                              this.centerPointBrush,                              null,                              this.SkeletonPointToScreen(skel.Position),                              BodyCenterThickness,                              BodyCenterThickness);                          }                      }                  }                // prevent drawing outside of our render area                  this.drawingGroup.ClipGeometry = new RectangleGeometry(new Rect(0.0, 0.0, RenderWidth, RenderHeight));            }          }

在做一个关于kinect的项目，要检测在kinect前的人数。。。我想用kinect骨骼追踪然后把追踪的数目加起来。问题是，kinect追踪到一个骨骼后是持续追踪这个骨骼的动作，而且最多追踪2个。怎么能在在打开kinect的时候就能得出有多少人？有新的人进来后count会直接增加？小弟是新手。求各位帮帮忙。。。用的是C#
我在kinect skeleton 后面加了个代码
private int GetTotalSkeleton(AllFramesReadyEventArgs e)
       {
 
           using (SkeletonFrame skeletonFrameData = e.OpenSkeletonFrame())
           {
               if (skeletonFrameData == null)
               {
                   return 0;
               }
 
 
               skeletonFrameData.CopySkeletonDataTo(allSkeletons);
 
               //Pessoas nao rastreados
               int noTrac = (from s in allSkeletons
                                        where s.TrackingState == SkeletonTrackingState.PositionOnly
                                        select s).Count();
 
               //Pessoas com esqueleto
               int comEsq = (from s in allSkeletons
                             where s.TrackingState == SkeletonTrackingState.Tracked
                             select s).Count();
 
               int numberOfSkeletons = noTrac + comEsq;
 
               return numberOfSkeletons;
 
           }
 
       }
红字说有错误，return那个把void改成int解决了。。。allSkeletons改成totalskeleton可以吗？这个代码可以实现统计人数吗？