王霞, 张艺馨, 赵雨薇, 金伟其. Time-of-Flight透散射介质成像技术综述[J]. 红外与激光工程, 2023, 52(2): 20220318. DOI: 10.3788/IRLA20220318
引用本文: 王霞, 张艺馨, 赵雨薇, 金伟其. Time-of-Flight透散射介质成像技术综述[J]. 红外与激光工程, 2023, 52(2): 20220318. DOI: 10.3788/IRLA20220318
Wang Xia, Zhang Yixin, Zhao Yuwei, Jin Weiqi. Review of Time-of-Flight imaging through scattering media technology[J]. Infrared and Laser Engineering, 2023, 52(2): 20220318. DOI: 10.3788/IRLA20220318
Citation: Wang Xia, Zhang Yixin, Zhao Yuwei, Jin Weiqi. Review of Time-of-Flight imaging through scattering media technology[J]. Infrared and Laser Engineering, 2023, 52(2): 20220318. DOI: 10.3788/IRLA20220318

Time-of-Flight透散射介质成像技术综述

Review of Time-of-Flight imaging through scattering media technology

  • 摘要: Time-of-Flight (ToF)成像是利用光在目标和相机之间的飞行时间来获取场景的深度信息,具有体积小、成本低、实时成像等优势。在散射环境中,由于散射介质对光的散射作用,ToF成像受到多径干扰的影响,深度测量误差较大,限制了ToF相机在散射场景中的应用。ToF透散射介质成像技术是校正因散射光引起的多径干扰效应,从传感器接收到的混叠信号中分离出目标分量,实现散射场景中的深度信息恢复,其在雾天自动驾驶、水下勘测、生物医学等领域具有广阔的应用前景。依据ToF成像系统的不同,详细介绍了PL-ToF和CW-ToF成像的基本原理,阐述和分析了散射场景中ToF稳态成像和瞬态成像的机理和特点,分别回顾和总结了ToF稳态成像和瞬态成像的透散射介质成像研究现状,并介绍了ToF透散射介质成像的应用前景,最后依据现有ToF透散射介质成像技术的优缺点,对未来发展趋势进行了展望。

     

    Abstract: Time-of-Flight (ToF) imaging senses the depth information of the scene using the time of light traveling from the target to the camera, with the advantage of compact construction, low cost and real-time imaging. In the scattering scene, the depth measurement of ToF imaging is affected by multipath interference due to the light scattered by the scattering medium, which results in large depth measurement errors, and limits the application of ToF imaging in the scattering scene. ToF imaging through scattering media can effectively correct the multipath interference caused by scattered light via separating the target component from the mixed signal received by a ToF sensor for recovering the depth information of a scattering scene, which is promisingly applied in foggy autonomous driving, underwater surveys, biomedicine, and other fields. Herein, the principle of PL-ToF and CW-ToF imaging is introduced in detail according to the difference of ToF imaging system, and the mechanisms and characteristics of ToF stable and transient imaging in a scattering scene are introduced and analyzed. The researches of ToF imaging through scattering media in stable and transient imaging are reviewed and summarized, respectively. In addition, the potential applications of ToF imaging through scattering media are presented. Finally, the future development trend is prospected according to the advantages and disadvantages of existing ToF imaging through scattering media.

     

/

返回文章
返回