New Methods for Imaging Into and Through Inhomogeneous Media

进入和穿过非均匀介质成像的新方法

• 批准号: 9000571
• 负责人: Emmett Leith
• 金额: $ 23.9万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-01 至 1993-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9000571&HistoricalAwards=false
• 关键词: New; Methods; Imaging; Into; Through

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.

在不规则介质中或通过不规则介质成像，范围从 大气的不均匀性扩散到非常困难的情况下， 散射介质，例如人体组织，仍然是 图像科学 所使用的技术范围 在这些问题上是相当可观的，包括主动自适应光学， 图像去卷积、相位恢复和相位共轭。 的 目前的工作提出了各种想法，成像通过 以及用于对嵌入其中的物体进行成像 不均匀性 第一类，通过不均匀性成像， 体现了最近开发的一种技术的扩展， 研究者通过使用 超分辨技术 我们的目标是将这种能力扩展到 各种方法，特别是，以消除需要的畸变- 从源到混频器的自由路径，这可以通过以下方式实现： 结合了空间和时间编码技术。 第二 类别是嵌入不均匀性内的对象的成像。 提出了几种技术，如共焦扫描与 使用极短的光脉冲。