光学拼接系统中基于模板的图像配准  

Template-based image registration in an optical butting system

作　　者：雷华[1] 徐之海[1] 冯华君[1] 李奇[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,浙江杭州310027

出　　处：《光电子．激光》2010年第11期1725-1729,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60977010);国家"973"计划资助项目(2009CB724006);现代光学仪器国家重点实验室资助项目

摘　　要：为了扩大成像系统的视场,设计了一套视场拼接系统。系统中,整个像面被分割成4部分,并分别由4个图像传感器接收,将4幅图像拼接可以获得完整的图像。将基于特征点的图像配准算法应用到光学拼接系统中,实现4幅图像的配准。由于4幅图像边缘有较严重的渐晕现象,为了提高图像配准的稳定性,提出了基于模板匹配的配准算法。将模板法和直接配准法的结果进行了对比,实验表明,模板法能够给出稳定的配准结果,从而能够保证配准的精度。To extend the field of view of an optical imaging system, an optical butting system is designed.In this system, the whole image plane is divided into four parts, each of which is received by an image sensor.The whole image is obtained by butting the four images received by the image sensors together.The image registration may be unstable since the vignetting arises in the four images.The image obtained by a traditional camera is used as a template to get a stable image registration.Comparing the results between the template-based image registration and the traditional image registration, it is shown that the template-based image registration is more stable and robust.

关 键 词：成像系统 扩大视场 光学拼接 图像配准 

分 类 号：O436[机械工程—光学工程]