一种应用于列车信息画面实时重建的快速绘图方法

在许多视频应用中，画面重建是一个重要的课题。提出一种应用于列车信息实时分析重建系统的快速绘图方法使用双缓存技术在内存空间申请指定大小的位图，通过图形设备接口在该位图上进行图形绘制。绘图模块对基本绘图单元进行封装，各绘图元素单元具有相似的设置接口。采用了双缓冲技术避免闪烁，同时采用部分绘制方法，提高绘制速度。该绘图模块具有很好的可扩展性、实时性和灵活性。所提出的快速绘图方法在列车信息实时分析重建系统中得到很好的应用。

A Fast Image Reconstruction Method for theLayout of Real-Time Train Information

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