Programmable aperture camera using LCoS

Hajime Nagahara, Changyin Zhou, Takuya Watanabe, Hiroshi Ishiguro, Shreee K. Nayar

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)


Since 1960s, aperture patterns have been studied extensively and a variety of coded apertures have been proposed for various applications, including extended depth of field, defocus deblurring, depth from defocus, light field acquisition, etc. Researches have shown that optimal aperture patterns can be quite different due to different applications, imaging conditions, or scene contents. In addition, many coded aperture techniques require aperture patterns to be temporally changed during capturing. As a result, it is often necessary to have a programmable aperture camera whose aperture pattern can be dynamically changed as needed in order to capture more useful information. In this paper, we propose a programmable aperture camera using a Liquid Crystal on Silicon (LCoS) device. This design affords a high brightness contrast and high resolution aperture with a relatively low light loss, and enables one change the pattern at a reasonably high frame rate. We build a prototype camera and evaluate its features and drawbacks comprehensively by experiments. We also demonstrate three coded aperture applications in defocus deblurring, depth from defocus and light field acquisition.

ジャーナルIPSJ Transactions on Computer Vision and Applications
出版ステータス出版済み - 2012

All Science Journal Classification (ASJC) codes

  • コンピュータ ビジョンおよびパターン認識


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