Single-shot compressed ultrafast photography at one hundred billion frames per second.
Single-shot compressed ultrafast photography at one hundred billion frames per second.
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DOI：
10.1038/nature14005
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发表时间：
2014-12-04
期刊：
影响因子：
64.8
通讯作者：
Wang, Lihong V.
中科院分区：
文献类型：
--
作者：
Gao, Liang;Liang, Jinyang;Li, Chiye;Wang, Lihong V.
摄影师长期以来一直在寻求以高成像速度捕捉瞬态场景，早期的例子是1878年著名的马运动记录和1887年超音速子弹的照片。然而，直到世纪后期，超高速成像（每秒超过105帧）才取得突破性进展。特别是，基于电荷耦合器件（CCD）或互补金属氧化物半导体（CMOS）技术的电子成像传感器的引入彻底改变了高速摄影，使采集速率高达每秒107帧。尽管这些传感器具有广泛的影响力，但使用CCD或CMOS技术进一步提高帧速率从根本上受到其片上存储和电子读出速度的限制。在这里，我们展示了一种二维动态成像技术，压缩超快摄影（CUP），它可以捕捉非重复的时间演变的事件高达每秒1011帧。与现有的超快成像技术相比，CUP具有突出的优点，即用单个相机快照测量anx-y-t（x，y，空间坐标;t，时间）场景，从而允许观察瞬态事件，时间分辨率为数十皮秒。此外，与传统摄影类似，CUP是只接收的，因此不需要其他单次拍摄超快成像器所需的专用主动照明。因此，CUP可以成像各种发光物体，如荧光或生物发光物体。使用CUP，我们仅用单次激光照射就可以可视化四种基本物理现象：激光脉冲反射和折射，光子在两种介质中的运动，以及非信息的超光速传播（即，看起来比光速快但不能传递信息的运动）。鉴于CUP的能力，我们希望它能在基础科学和应用科学（包括生物医学研究）中找到广泛的应用。
The capture of transient scenes at high imaging speed has been long sought by photographers,,,, with early examples being the well known recording in 1878 of a horse in motion and the 1887 photograph of a supersonic bullet. However, not until the late twentieth century were breakthroughs achieved in demonstrating ultrahigh-speed imaging (more than 105frames per second). In particular, the introduction of electronic imaging sensors based on the charge-coupled device (CCD) or complementary metal–oxide–semiconductor (CMOS) technology revolutionized high-speed photography, enabling acquisition rates of up to 107frames per second. Despite these sensors’ widespread impact, further increasing frame rates using CCD or CMOS technology is fundamentally limited by their on-chip storage and electronic readout speed. Here we demonstrate a two-dimensional dynamic imaging technique, compressed ultrafast photography (CUP), which can capture non-repetitive time-evolving events at up to 1011frames per second. Compared with existing ultrafast imaging techniques, CUP has the prominent advantage of measuring anx–y–t(x,y, spatial coordinates;t, time) scene with a single camera snapshot, thereby allowing observation of transient events with temporal resolution as tens of picoseconds. Furthermore, akin to traditional photography, CUP is receive-only, and so does not need the specialized active illumination required by other single-shot ultrafast imagers,. As a result, CUP can image a variety of luminescent—such as fluorescent or bioluminescent—objects. Using CUP, we visualize four fundamental physical phenomena with single laser shots only: laser pulse reflection and refraction, photon racing in two media, and faster-than-light propagation of non-information (that is, motion that appears faster than the speed of light but cannot convey information). Given CUP’s capability, we expect it to find widespread applications in both fundamental and applied sciences, including biomedical research.
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DOI：
10.3390/s90100430
发表时间：
2009
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
El-Desouki M;Deen MJ;Fang Q;Liu L;Tse F;Armstrong D
通讯作者：
Armstrong D
影响因子：
16.6
作者：
Velten, Andreas;Willwacher, Thomas;Raskar, Ramesh
通讯作者：
Raskar, Ramesh
影响因子：
5.4
作者：
Wright, Stephen J.;Nowak, Robert D.;Figueiredo, Mario A. T.
通讯作者：
Figueiredo, Mario A. T.
影响因子：
10.6
作者：
Afonso, Manya V.;Bioucas-Dias, Jose M.;Figueiredo, Mario A. T.
通讯作者：
Figueiredo, Mario A. T.
影响因子：
8.6
作者：
RENTZEPIS, PM;TOPP, MR;JORTNER, J
通讯作者：
JORTNER, J