High resolution images are widely used in our daily life, whereas high-speed video capture is challenging due to the low frame rate of cameras working at the high resolution mode. Digging deeper, the main bottleneck lies in the low throughput of existing imaging systems. Towards this end, snapshot compressive imaging (SCI) was proposed as a promising solution to improve the throughput of imaging systems by compressive sampling and computational reconstruction. During acquisition, multiple high-speed images are encoded and collapsed to a single measurement. After this, algorithms are employed to retrieve the video frames from the coded snapshot. Recently developed Plug-and-Play (PnP) algorithms make it possible for SCI reconstruction in large-scale problems. However, the lack of high-resolution encoding systems still precludes SCI's wide application. In this paper, we build a novel hybrid coded aperture snapshot compressive imaging (HCA-SCI) system by incorporating a dynamic liquid crystal on silicon and a high-resolution lithography mask. We further implement a PnP reconstruction algorithm with cascaded denoisers for high quality reconstruction. Based on the proposed HCA-SCI system and algorithm, we achieve a 10-mega pixel SCI system to capture high-speed scenes, leading to a high throughput of 4.6G voxels per second. Both simulation and real data experiments verify the feasibility and performance of our proposed HCA-SCI scheme.
翻译:高分辨率图像在我们日常生活中被广泛使用,而高速视频捕获则具有挑战性,因为高分辨率模式的摄像头的摄像机框架率较低。在深度挖掘中,主要的瓶颈在于现有成像系统的低传输量。为此,提出了近似压缩成像(SCI),作为通过压缩取样和计算重建改善成像系统输送量的有希望的解决办法。在获取过程中,多高速度图像被编码,并崩溃成一个单一的测量标准。在此之后,使用算法从编码快照中检索视频框架。最近开发的Plug-Play(PnP)算法使得有可能在大规模问题上进行SCI的重建。然而,缺乏高分辨率编码系统仍然妨碍SCI的广泛应用。在本文中,我们建立了一个新型的混合编码孔径抓成像压缩成像(HCA-SCI)系统,在硅和高分辨率岩层摄影面具上安装一个动态液晶体晶体。我们进一步实施了PnPreport 与级的Degical den-deloal-degraphal sal sqal squal squal squal sqabal des acal-weal squal asubal destrabal subal subal subal subal degraphal subal subal subal subal subal sual sual sual subal subal subal subal 。在提议的HCal 上,在提议的HCA-toal 上,在拟议的一个高级系统上,在提议的HCA-CA-CA-CA-CA-CA-Sal-Sal-subal-subal-subal-subal-subal-S-S-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-Sal-S-Sal-Sal-Sal-Sal-Sal-