使用带有里斯利棱镜的单相机进行超分辨率成像和视野扩展。

Super-resolution imaging and field of view extension using a single camera with Risley prisms.

作者信息

Wang Zihan, Cao Jie, Hao Qun, Zhang Fanghua, Cheng Yang, Kong Xianyue

机构信息

Key Laboratory of Biomimetic Robots and Systems, School of Optics and Photonics, Beijing Institute of Technology, Ministry of Education, Beijing 100081, China.

The 45th Research Institute of China Electronics Technology Group Corporation, Beijing 100176, China.

出版信息

Rev Sci Instrum. 2019 Mar;90(3):033701. doi: 10.1063/1.5050833.

DOI:10.1063/1.5050833

PMID:30927812

Abstract

A novel imaging method using Risley prisms is proposed to achieve super-resolution imaging and field of view (FOV) extension. The mathematical models are developed, and the solutions to sub-pixel imaging for super-resolution reconstruction are presented. Simulations show that the proposed method can enhance the image resolution up to optical diffraction limit of the optical system for imaging systems whose resolution is limited by pixel size. A prototype is developed. Experimental results show that the scene resolving capacity can be enhanced by 2.0 times with a resolution improvement factor of 4, and the FOV extension results accord with the simulations, providing a promising approach for super-resolution reconstruction, large FOV imaging, and foveated imaging with low cost and high efficiency.

摘要

提出了一种使用里斯利棱镜的新型成像方法，以实现超分辨率成像和视场（FOV）扩展。建立了数学模型，并给出了用于超分辨率重建的亚像素成像解决方案。仿真结果表明，对于分辨率受像素尺寸限制的成像系统，该方法可以将图像分辨率提高到光学系统的光学衍射极限。开发了一个原型。实验结果表明，场景分辨能力可提高2.0倍，分辨率提高因子为4，并且视场扩展结果与仿真结果一致，为低成本、高效率的超分辨率重建、大视场成像和凝视成像提供了一种有前景的方法。