在李萨如模式的激光扫描显示系统(LSDS)中, 由于李萨如扫描模式与传统光栅扫描的差异性, 重建基于李萨如扫描模式的激光调制像素数据流成为系统实现的关键。提出了基于像素的方法和扫描线等间隔采样两种激光调制像素数据流的重建方法。等间隔采样的方法具有实现简单的特点, 而基于像素的方法可以通过改变查找表校正系统投影畸变。通过仿真和工程实现, 验证了理论分析的结果。

In Laser Scanning Display System (LSDS) based on Lissajous pattern, the reconstruction of laser-modulated pixel data stream becomes the key point for the implementation of the system due to the difference between Lissajous scanning pattern and the traditional raster scanning pattern. This paper proposes two methods for laser modulated pixel data stream reconstruction, namely, the pixel-based method and the method of the equal interval sampling of the scanning line. The uniformly-spaced sampling method is easy to implement while the pixel-based method can correct the projective distortion of the system by changing the look-up table. The results of the theoretical analysis are proved by simulation and engineering implementation.