Super-resolution imaging with large field of view for distant object through scattering media

Abstract

Challenge of imaging through scattering media has been gradually solved by various approaches. The scattering media can be utilized as “scattering lens” and applied to sub-diffraction limit focusing and super-resolution imaging. But pioneering works of super-resolution imaging are mainly applied in the field of microscopy. In this work, we propose an effective method of super-resolution macroscopic imaging for distant objects based on the Fourier-domain shower-curtain effect. The scattering media are used as screens with larger aperture to record more spatial frequency information and super-resolution image reconstruction is achieved with phase retrieval algorithm. Experimental result shows a 9.93-fold resolution improvement by sacrificing the field of view (FOV). Ptychography is further introduced to increase the space-bandwidth product as well as the compressed FOV. The proposed method is promising in super-resolution imaging through scattering media for macroscopy.