计算鬼成像的前沿进展:从特殊成像、光学加密到计算鬼视觉

Advances in computational ghost imaging:from special imaging,optical encryption to computational ghost vision

计算鬼成像CGI是利用没有空间分辨率能力的单像素光电探测器来实现目标物图像重建的间接成像方式,在X-ray、太赫兹等非可见光波段的图像传感器阵列往往造价高甚至不存在,CGI大大降低了探测端的硬件负担,且在非常规波段下的成像应用中具有明显优势.同时CGI在穿过湍流和散射介质成像、降低辐射剂量协议下成像、光学加密通信以及无图像识别等方面具有常规成像技术所不具备的优势.本文介绍了CGI的原理、近年来的前沿进展及应用前景.

Computational ghost imaging(CGI)is an indirect imaging modality that reconstructs the image of an object using a spatially unresolved single-pixel photodetector.In non-visible wavebands such as X-ray and terahertz,where traditional image sensor arrays are often expensive or non-existent,CGI greatly reduces the hardware burden of the detection side,and has obvious advantages in imaging applications in unconventional bands.Furthermore,CGI has advantages over conventional imaging techniques in imaging through turbulent and scattering media,imaging under low radiation dose protocols,optical encryption and secure communication,and image-free recognition.This paper introduced the principle of CGI,and its recent developments(primarily in our group),and potential applications.