1. change value range of k_ratio/m_rFGSegThreshold and m_segIDCount to enable complete Object "nOldPara=17";

2. release *IplImage  after cvWriteFrame to save RAM;
3. add OBJECT_MARGIN to object ROI to make FG larger;
4. change the composition of combinedImage to temp + m_nSampleTime;
5. debug TimeLineRestructed().