Hemispherical confocal imaging using turtleback reflector
Name
Raskar_Hemispherical Confocal.pdf
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3.62 MB
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Author(s)
Mukaigawa, Yasuhiro
Tagawa, Seiichi
Kim, Jaewon
Raskar, Ramesh
Matsushita, Yasuyuki
Yagi, Yasushi
Date Issued
November 2010
Journal
Computer vision (Asian Conference on Computer Vision (ACCV) 2010) (lecture notes in computer science, v. 6492)
Publisher
Springer
Citation
Mukaigawa, Yasuhiro et al. “Hemispherical Confocal Imaging Using Turtleback Reflector.” Computer Vision – ACCV 2010. Ed. Ron Kimmel, Reinhard Klette, & Akihiro Sugimoto. (Lecture notes in computer science, Vol. 6492.) Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. 336-349. Copyright © 2011, Springer Berlin / Heidelberg
Version
Author's final manuscript
Abstract
We propose a new imaging method called hemispherical confocal imaging to clearly visualize a particular depth in a 3-D scene. The key optical component is a turtleback reflector which is a specially designed polyhedral mirror. By combining the turtleback reflector with a coaxial pair of a camera and a projector, many virtual cameras and projectors are produced on a hemisphere with uniform density to synthesize a hemispherical aperture. In such an optical device, high frequency illumination can be focused at a particular depth in the scene to visualize only the depth with descattering. Then, the observed views are factorized into masking, attenuation, and texture terms to enhance visualization when obstacles are present. Experiments using a prototype system show that only the particular depth is effectively illuminated and hazes by scattering and attenuation can be recovered even when obstacles exist.
MIT Department
Massachusetts Institute of Technology. Media Laboratory
Program in Media Arts and Sciences (Massachusetts Institute of Technology)
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
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DOI of Published Version
https://doi.org/10.1007/978-3-642-19315-6_26
