光学微扫描器技术及其实现方式

Optical Microscanner Technique and Realization

微扫描成像技术是一种用于提高成像系统分辨力的新技术,它利用多幅相互之间具有亚像元位移的序列低分辨力图像来重建高分辨力图像。微扫描器是微扫描成像系统中最重要的组成部分。文章简要地阐述了成像系统由于欠采样所带来的混叠效应,以及微扫描成像技术提高采样频率以减小混叠效应的原理,分析了微扫描工作模式和成像过程,然后介绍了几种典型光学微扫描器的实现方式。

Microscanning imaging is a new technique to improve imaging system resolution. It utilizes multiple low resolution picture sequence which have sub-pixel shift between each other to rebuild high resolution picture. Microscanner is the most important component of Microscanning imaging system. Firstly, the paper briefly presented the imaging system＇s aliasing effect as a result of subsampling and the theory of reducing aliasing effect by increasing sampling frequency. Then the microscanning working mode and the optical microscanning imaging process was analyzed. Finally several realization of optical microscarmer was introduced in detail.