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Compressed ultrafast photography by multi-encoding imaging

Yang, Chengshuai and Qi, Dalong and Liang, Jinyang and Wang, Xing and Cao, Fengyan and He, Yilin and Ouyang, Xiaoping and Zhu, Baoqiang and Wen, Wenlong and Jia, Tianqing and Tian, Jinshou and Gao, Liang and Sun, Zhenrong and Zhang, Shian and Wang, Lihong V. (2018) Compressed ultrafast photography by multi-encoding imaging. Laser Physics Letters, 15 (11). Art. No. 116202. ISSN 1612-2011. doi:10.1088/1612-202x/aae198.

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Imaging ultrafast dynamic scenes has been long pursued by scientists. As a two-dimensional dynamic imaging technique, compressed ultrafast photography (CUP) provides the fastest receive-only camera to capture transient events. This technique is based on three-dimensional image reconstruction by combining streak imaging with compressed sensing (CS). However, the image quality and the frame rate of CUP are limited by the CS-based image reconstruction algorithms and the inherent temporal and spatial resolutions of the streak camera. Here, we report a new method to improve the temporal and spatial resolutions of CUP. Our numerical simulation and experimental verification show that by using a multi-encoding imaging method, both the image quality and the frame rate of CUP can be significantly improved beyond the intrinsic technical parameters. Importantly, the temporal resolution by our scheme can break the limitation of the streak camera. Therefore, this new technology has potential benefits in many applications that require the ultrafast dynamic scene image with high temporal and spatial resolutions.

Item Type:Article
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Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2018 Astro Ltd. Received 5 July 2018. Accepted 31 August 2018. Published 3 October 2018.
Issue or Number:11
Record Number:CaltechAUTHORS:20181003-105017264
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Official Citation:Chengshuai Yang et al 2018 Laser Phys. Lett. 15 116202
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90093
Deposited By: George Porter
Deposited On:05 Oct 2018 17:29
Last Modified:16 Nov 2021 00:40

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