High-speed imaging using CMOS image sensor with quasi pixel-wise exposure

T. Sonoda, Hajime Nagahara, K. Endo, Y. Sugiyama, R. Taniguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationSelected Papers from the 31st International Congress on High-Speed Imaging and Photonics
EditorsTakeharu Goji Etoh, Hiroyuki Shiraga, Takeharu Goji Etoh
PublisherSPIE
ISBN (Electronic)9781510611009
DOIs
Publication statusPublished - Jan 1 2017
Event31st International Congress on High-Speed Imaging and Photonics - Osaka, Japan
Duration: Nov 6 2016Nov 10 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10328
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

Other31st International Congress on High-Speed Imaging and Photonics
CountryJapan
CityOsaka
Period11/6/1611/10/16

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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