Abstract
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 four coded aperture applications in defocus deblurring, depth from defocus, light field acquisition, and motion deblurring.
| Original language | English |
|---|---|
| Title of host publication | Smart Sensors and Systems |
| Publisher | Springer International Publishing |
| Pages | 85-108 |
| Number of pages | 24 |
| ISBN (Electronic) | 9783319147116 |
| ISBN (Print) | 9783319147109 |
| DOIs | |
| Publication status | Published - Jan 1 2015 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
- Computer Science(all)
Cite this
Computational photography using programmable aperture. / Nagahara, Hajime; Taniguchi, Rin-Ichiro.
Smart Sensors and Systems. Springer International Publishing, 2015. p. 85-108.Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - Computational photography using programmable aperture
AU - Nagahara, Hajime
AU - Taniguchi, Rin-Ichiro
PY - 2015/1/1
Y1 - 2015/1/1
N2 - 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 four coded aperture applications in defocus deblurring, depth from defocus, light field acquisition, and motion deblurring.
AB - 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 four coded aperture applications in defocus deblurring, depth from defocus, light field acquisition, and motion deblurring.
UR - http://www.scopus.com/inward/record.url?scp=84943804009&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84943804009&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-14711-6_5
DO - 10.1007/978-3-319-14711-6_5
M3 - Chapter
SN - 9783319147109
SP - 85
EP - 108
BT - Smart Sensors and Systems
PB - Springer International Publishing
ER -