Abstract: Image reconstruction is an important topic in many video applications. This paper proposes
a novel fast image reconstruction method for the layout of real-time train information. It adopts
double buffers to avoid flashing of pictures. Its drawing module encapsulates many basic graphic
units and these units have similar interfaces. Furthermore, the proposed reconstruction method adopts
partly drawing method to further improve reconstruction speed. Thus, the proposed real-time
reconstruction has better extensibility and flexibility. This reconstruction module has been applied in
real-time train information system very well.

Key words: real-time train information, image construction, double buffers, graphics device interface
plus, vector drawing