信息光学成像研究回顾、现状与展望(特邀)

Review, current status and prospect of researches on information optical imaging (Invited)

  • 摘要: 从信息论的视角理解、研究、优化光学成像系统是成像科学自信息论诞生以来的一个重要研究方向,也一直在取得一系列相应的进展。但是,由于传统光学成像系统物面至像面的“固定点到点”所见即所得的图像信息采集模式,使得基于信息论的传统光学成像研究更多的具有理论上的意义,对实际应用系统的优化设计更多的是起到锦上添花的作用,难以在成像功能上有实质性的突破。随着现代光场调控技术和基于光场高阶关联的新概念光学成像技术的突破性进展,目前已经能够在成像过程中利用可控的光场时空涨落对目标图像进行编码,这对从信息论的角度理解和优化光学成像系统提出了迫切的需求,同时也为信息光学成像这一研究方向提供了全新的发展机遇。文中将回顾自信息论提出的半个多世纪以来信息光学成像的国内外发展历史,并结合目前光学成像的最新进展讨论其若干研究现状和可能的发展趋势。

     

    Abstract: To understand, study and optimize optical imaging systems from the viewpoint of information theory has been an important research field of the imaging science since the birth of information theory, accompanied by a series of corresponding progress which has been being achieved. However, due to the ''fixed point-to-point'' mode of image information acquisition from the object plane to the image plane in traditional optical imaging systems, studies on them based on information theory are more meaningful in the theoretical sense while just acting as icing on the cake for optimization and design of practical application systems, which makes substantial breakthroughs in new imaging functions are difficult to be made therein. With breakthroughs in both the modern modulation techniques of light fields and new-concept optical imaging techniques based on the high-order correlation of light fields, currently it has been able to encode the target image by using controllable spatiotemporal fluctuations of light fields during the imaging process. This not only puts forward new demands for understanding and optimizing optical imaging systems from the viewpoint of information theory, but also brings new opportunities for the research field of information optical imaging. This paper will first review the domestic and international development history of information optical imaging during the last half century since the birth of information theory, and then discuss its current research status and potential developing tendency by combining with latest progress in the field of optical imaging.

     

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