扫描拼接技术由于原理简单、易于实现而被广泛应用于全景成像系统中,然而该系统中使用的二维扫描镜在工作过程中会引起图像旋转.对二维扫描镜引起的像旋进行特性分析能够指导全景成像系统中像旋校正.假设物理为球面,基于光学反射矢量理论基础对水平扫描和俯仰扫描进行像旋特性分析比较.仿真结果表明二维扫描镜在水平扫描时像旋角与旋转角比例为1∶1,而俯仰扫描不存在比例关系,可以对精确实现光机消像旋提供指导作用.

Scanning splicing technology is widely used in panoramic imaging system,because its simple theory and easy to use.But it will cause image rotating when two-dimensional scanning mirror is used in the system.To analyse image rotation by two-dimensional scanning mirror can guide the image rotation correction in panoramic imaging system.In this paper,the object is assumed spherical.Based on the theory of optical reflection vector,the characteristics of image rotating in horizontal scanning and pitching scanning are compared.The simulation results show that the ratio of rotating angle to image rotating angle is 1∶1 when the two-dimensional scanning mirror is horizontal scanning.There is no proportional relationship when the two dimensional scanning mirror is pitching scan.