Market Study of Compressed Ultrafast Tomographic Imaging (CUTI)

条纹相机广泛用于瞬态事件的时间分辨二维（2D）成像。根据MarketsandMarkets的数据，到2023年底，全球高速成像市场的价值约为4.22亿美元，2017年至2023年的估计复合年增长率约为8%。然而，现有的方法受到采集时间长、空间和时间分辨率之间的权衡以及视野缩小的限制。他们还需要额外的组件，修改条纹相机和主动照明。

Streak cameras are widely used in time-resolved two-dimensional (2D) imaging of transient events. According to MarketsandMarkets, the global high-speed imaging market has been valued at approximately US$422M by the end of 2023 with ~8% of an estimated compound annual growth rate from 2017 to 2023. However, existing approaches are strained by long acquisition time, the trade-off between spatial and temporal resolutions, and a reduced field of view. They also require additional components, modification of the streak cameras, and active illumination. Here, we 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. Using a compressed-sensing reconstruction algorithm, the 2D transient event can be accurately recovered in a few measurements. CUTI is used to image the sequential arrival of two spatially modulated ultrashort ultraviolet laser pulses using an image-converter streak camera at 0.5 trillion frames-per-second. CUTI has also been applied to imaging an animation of fast-bouncing balls using a rotating-mirror streak camera at 5 thousand frames-per-second. Exhibiting as a new work mode universally adaptable to most streak cameras, CUTI is envisioned to find many industrial and scientific applications. In this regard, this NSERC I2I Market Study will assist in identifying the most promising applications, analyzing the prospect of the potential market, and facilitating technology transfer from the laboratory to a commercial product.