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Proceedings Paper

High-speed imaging using CMOS image sensor with quasi pixel-wise exposure
Author(s): T. Sonoda; H. Nagahara; K. Endo; Y. Sugiyama; R. Taniguchi
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Paper Abstract

Several recent studies in compressive video sensing have realized scene capture beyond the fundamental trade-off limit between spatial resolution and temporal resolution using random space-time sampling. However, most of these studies showed results for higher frame rate video that were produced by simulation experiments or using an optically simulated random sampling camera, because there are currently no commercially available image sensors with random exposure or sampling capabilities. We fabricated a prototype complementary metal oxide semiconductor (CMOS) image sensor with quasi pixel-wise exposure timing that can realize nonuniform space-time sampling. The prototype sensor can reset exposures independently by columns and fix these amount of exposure by rows for each 8x8 pixel block. This CMOS sensor is not fully controllable via the pixels, and has line-dependent controls, but it offers flexibility when compared with regular CMOS or charge-coupled device sensors with global or rolling shutters. We propose a method to realize pseudo-random sampling for high-speed video acquisition that uses the flexibility of the CMOS sensor. We reconstruct the high-speed video sequence from the images produced by pseudo-random sampling using an over-complete dictionary.

Paper Details

Date Published: 20 February 2017
PDF: 6 pages
Proc. SPIE 10328, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics, 103280A (20 February 2017); doi: 10.1117/12.2270485
Show Author Affiliations
T. Sonoda, Kyushu Univ. (Japan)
H. Nagahara, Kyushu Univ. (Japan)
K. Endo, Hamamatsu Photonics K. K. (Japan)
Y. Sugiyama, Hamamatsu Photonics K. K. (Japan)
R. Taniguchi, Kyushu Univ. (Japan)


Published in SPIE Proceedings Vol. 10328:
Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics
T. Goji Etoh; Hiroyuki Shiraga, Editor(s)

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