New Methods for Imaging Into and Through Inhomogeneous Media

在不规则介质中和通过不规则介质形成图像，范围从大气不均匀到扩散散射介质(如人体组织)的非常困难的情况，仍然是图像科学的主要挑战。应用于这些问题的技术相当广泛，包括主动自适应光学、图像去卷积、相位恢复和相位共轭。本工作提出了通过非均质成像和对嵌入在非均质中的对象成像的各种想法。第一类，通过非均匀成像，体现了首席研究员最近开发的一种技术的扩展，该技术使用超分辨率技术通过非均匀成像。目标是以各种方式扩展这一能力，特别是消除从源到混合器的无像差路径的需要，这可以通过结合空间和时间编码技术来实现。第二类是嵌入在非均质性中的物体的成像。提出了几种技术，例如使用极短的光脉冲进行共聚焦扫描。

Image formation in and through irregular media, ranging from atmospheric inhomogeneities to the very difficult case of diffusely scattering media such as human tissue, remains a major challenge of image science. The range of technology that has been brought to bear on these problems is considerable, including active adaptive optics, image deconvolution, phase retrieval and phase conjugation. The present work proposes various ideas for imaging through inhomogeneities and for imaging objects embedded within inhomogeneities. The first category, imaging through inhomogeneities, embodies extensions of a technique recently developed by the principal investigator for imaging through inhomogeneities using a superresolution technique. The goal is to extend this capability in various ways, in particular, to eliminate the need for an aberration- free path from source to the mixer, which can be accomplished by combining spatial and temporal encoding techniques. The second category is the imaging of objects embedded within the inhomogeneity. Several techniques are proposed, such as confocal scanning with the use of extremely short pulses of light.