Compressed ultrafast tomographic imaging by passive spatiotemporal projections

Lai Yingming; Shang Ruibo; Cote Christian-Yves; Liu Xianglei; Laramee Antoine; Legare Francois; Luke Geoffrey P.; Liang Jinyang

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Compressed ultrafast tomographic imaging by passive spatiotemporal projections

机译：被动时空投影压缩超快断层摄影成像

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Existing streak-camera-based two-dimensional (2D) ultra-fast imaging techniques are limited by long acquisition time, the trade-off between spatial and temporal resolutions, and a reduced field of view. They also require additional components, customization, or active illumination. Herewe develop compressed ultrafast tomographic imaging (CUTI), which passively records 2D transient events with a standard streak camera. By grafting the concept of computed tomography to the spatiotemporal domain, the operations of temporal shearing and spatiotemporal integration in a streak camera's data acquisition can be equivalently expressed as the spatiotemporal projection of an (x, y, t) datacube from a certain angle. Aided by a new, to the best of our knowledge, compressed-sensing reconstruction algorithm, the 2D transient event can be accurately recovered in a few measurements. CUTI is exhibited as a new imaging mode universally adaptable to most streak cameras. Implemented in an image-converter streak camera, CUTI captures the sequential arrival of two spatially modulated ultrashort ultraviolet laser pulses at 0.5 trillion frames per second. Applied to a rotating-mirror streak camera, CUTI records an amination of fast-bouncing balls at 5,000 frames per second. (C) 2021 Optical Society of America

机译：现有的基于条纹相机的二维（2D）超快成像技术受到长采集时间、空间和时间分辨率之间的权衡以及缩小视野的限制。它们还需要其他组件、自定义或活动照明。在这里，我们开发了压缩超快断层成像（CUTI），它使用标准条纹相机被动记录2D瞬态事件。通过将计算机断层扫描的概念移植到时空域，条纹相机数据采集中的时间剪切和时空积分操作可以等价地表示为（x，y，t）数据立方体从某个角度的时空投影。据我们所知，借助一种新的压缩感知重建算法，二维瞬态事件可以在几次测量中准确地恢复。CUTI是一种新的成像模式，适用于大多数条纹相机。CUTI采用图像转换器条纹相机，以每秒0.5万亿帧的速度捕获两个空间调制的超短紫外激光脉冲的连续到达。应用于旋转镜条纹相机，CUTI以每秒5000帧的速度记录快速弹跳的球。（2021）美国光学学会

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来源
《Optics Letters》 |2021年第7期|共4页
作者
Lai Yingming; Shang Ruibo; Cote Christian-Yves; Liu Xianglei; Laramee Antoine; Legare Francois; Luke Geoffrey P.; Liang Jinyang;
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Inst Natl Rech Sci Ctr Energie Mat Telecommun 1650 Blvd Lionel Boulet Varennes PQ J3X 1S2 Canada;

Dartmouth Coll Thayer Sch Engn 14 Engn Dr Hanover NH 03755 USA;

Axis Photon Inc 1650 Blvd Lionel Boulet Varennes PQ J3X 1S2 Canada;

Inst Natl Rech Sci Ctr Energie Mat Telecommun 1650 Blvd Lionel Boulet Varennes PQ J3X 1S2 Canada;

Inst Natl Rech Sci Ctr Energie Mat Telecommun 1650 Blvd Lionel Boulet Varennes PQ J3X 1S2 Canada;

Inst Natl Rech Sci Ctr Energie Mat Telecommun 1650 Blvd Lionel Boulet Varennes PQ J3X 1S2 Canada;

Dartmouth Coll Thayer Sch Engn 14 Engn Dr Hanover NH 03755 USA;

Inst Natl Rech Sci Ctr Energie Mat Telecommun 1650 Blvd Lionel Boulet Varennes PQ J3X 1S2 Canada;

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正文语种 eng
中图分类计量学;光学;
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8. Accuracy and usefulness of fusion imaging between three-dimensional coronary sinus and coronary veins computed tomographic images with projection images obtained using fluoroscopy. [J] . Auricchio A, Sorgente A, Soubelet E, Europace: European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology . 2009,第11期

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13. Tomographic Image Reconstruction from Laser Radar Reflective Projections [R] . Marino, R. M., Capes, R. N., Keicher, W. E., 1988

机译：激光雷达反射投影的层析成像重建

Compressed ultrafast tomographic imaging by passive spatiotemporal projections

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