袁影, 王晓蕊, 吴雄雄, 穆江浩, 张艳. 多孔径压缩编码超分辨率大视场成像方法[J]. 红外与激光工程, 2017, 46(8): 824001-0824001(7). DOI: 10.3788/IRLA201746.0824001
引用本文: 袁影, 王晓蕊, 吴雄雄, 穆江浩, 张艳. 多孔径压缩编码超分辨率大视场成像方法[J]. 红外与激光工程, 2017, 46(8): 824001-0824001(7). DOI: 10.3788/IRLA201746.0824001
Yuan Ying, Wang Xiaorui, Wu Xiongxiong, Mu Jianghao, Zhang Yan. Multi-aperture super-resolution and wide-field imaging method using compressive coding[J]. Infrared and Laser Engineering, 2017, 46(8): 824001-0824001(7). DOI: 10.3788/IRLA201746.0824001
Citation: Yuan Ying, Wang Xiaorui, Wu Xiongxiong, Mu Jianghao, Zhang Yan. Multi-aperture super-resolution and wide-field imaging method using compressive coding[J]. Infrared and Laser Engineering, 2017, 46(8): 824001-0824001(7). DOI: 10.3788/IRLA201746.0824001

多孔径压缩编码超分辨率大视场成像方法

Multi-aperture super-resolution and wide-field imaging method using compressive coding

  • 摘要: 多孔径成像是一种融合了仿生复眼视觉的新型成像方法,具有小型化、大视场、高分辨率等多种优势,但由于每个子孔径对应的单元图像分辨率过低,导致其成像质量和视场角的提升十分有限。为了进一步提高成像分辨率和探测视场,基于压缩感知理论设计随机编码模板,并紧贴子孔径放置对入射光场进行调制,通过单次曝光记录编码后的低分辨率单元图像阵列,利用稀疏优化算法,重构所有低分辨率单元图像获得超分辨率大视场图像。理论分析和仿真实验证明了该方法的有效性。该方法不仅能兼顾大视场高分辨率成像,而且大大缩小系统等效焦距,具有薄层结构,体积小而重量轻,可为微光机电一体化系统的研制设计提供借鉴。

     

    Abstract: Multi-aperture imaging is a new imaging method combining with compound eye concept, which has a small size, large field of view, high-resolution images reconstruction and other advantages. However, due to the low resolution of sub-images, the improvements for the image resolution and field of view are very limited. A novel imaging method which could achieve both super-resolution and large field of view was proposed. The random coded mask was designed based on the framework of compressive sensing and placed on each sub-aperture. Instead of directly imaging and converging on the image sensor, the incident light field of each sub-aperture would be modulated by the coded mask. Then, the random projections of the input object could be acquired by the low-dimension image sensor within a single exposure. Finally, the sparse representation-based optimization algorithm was applied to reconstruct super-resolution and large field of view images from all low-resolution sub-images, which had more object pixels than the number of pixels of the image sensor. Both the theoretical model and simulation results show the feasibility of the proposed method.

     

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