• Photonics Research
  • Vol. 9, Issue 11, 2277 (2021)
Zhihong Zhang1、2、†, Chao Deng1、2、†, Yang Liu3, Xin Yuan4、6, Jinli Suo1、2、*, and Qionghai Dai1、2、5
Author Affiliations
  • 1Department of Automation, Tsinghua University, Beijing 100084, China
  • 2Institute for Brain and Cognitive Science, Tsinghua University, Beijing 100084, China
  • 3Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  • 4Westlake University, Hangzhou 310024, China
  • 5Beijing National Research Center for Information Science and Technology, Tsinghua University, Beijing 100084, China
  • 6e-mail: xyuan@westlake.edu.cn
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    DOI: 10.1364/PRJ.435256 Cite this Article Set citation alerts
    Zhihong Zhang, Chao Deng, Yang Liu, Xin Yuan, Jinli Suo, Qionghai Dai. Ten-mega-pixel snapshot compressive imaging with a hybrid coded aperture[J]. Photonics Research, 2021, 9(11): 2277 Copy Citation Text show less

    Abstract

    High-resolution images are widely used in our everyday life; however, high-speed video capture is more challenging due to the low frame rate of cameras working at the high-resolution mode. The main bottleneck lies in the low throughput of existing imaging systems. Toward 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. Then, algorithms are employed to retrieve the video frames from the coded snapshot. Recently developed plug-and-play algorithms made the SCI reconstruction possible in large-scale problems. However, the lack of high-resolution encoding systems still precludes SCI’s wide application. Thus, in this paper, we build, to the best of our knowledge, 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 obtain a 10-mega-pixel SCI system to capture high-speed scenes, leading to a high throughput of 4.6 × 109 voxels per second. Both simulation and real-data experiments verify the feasibility and performance of our proposed HCA-SCI scheme.
    Zhihong Zhang, Chao Deng, Yang Liu, Xin Yuan, Jinli Suo, Qionghai Dai. Ten-mega-pixel snapshot compressive imaging with a hybrid coded aperture[J]. Photonics Research, 2021, 9(11): 2277
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