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Proceedings Paper

Pixel-offset position detection using lens array for integral three-dimensional display
Author(s): Hisayuki Sasaki; Masahiro Kawakita; Kenichiro Masaoka; Jun Arai; Makoto Okui; Fumio Okano; Yasuyuki Haino; Makoto Yoshimura; Masahito Sato
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Paper Abstract

An integral 3DTV system needs high-density elemental images to increase the reconstructed 3D image's resolution, viewing zone, and depth representability. The dual green pixel-offset method, which uses two green channels of images, is a means of achieving ultra high-resolution imagery. We propose a precise and easy method for detecting the pixel-offset distance when a lens array is mounted in front of the integral imaging display. In this method, pattern luminance distributions based on sinusoidal waves are displayed on each panel of green channels. The difference between phases (amount of phase variation) of these patterns is conserved when the patterns are sampled and transformed to a lower frequency by aliasing with the lens array. This allows the pixel-offset distance of the display panel to be measured in a state of magnification. The relation between the contrast and the amount of phase variation of the pattern is contradicted in relation to the pattern frequency. We derived a way to find the optimal spatial frequency of the pattern by regarding the product of the contrast and amount of phase variation of the patterns as an indicator of accuracy. We also evaluated the pixel-offset detection method in an experiment with the developed display system. The results demonstrate that the resolution characteristics of the projected image were refined. We believe that this method can be used to improve the resolution characteristics of the depth direction of integral imaging.

Paper Details

Date Published: 16 February 2011
PDF: 9 pages
Proc. SPIE 7863, Stereoscopic Displays and Applications XXII, 78631Z (16 February 2011); doi: 10.1117/12.872694
Show Author Affiliations
Hisayuki Sasaki, NHK Science & Technology Research Labs. (Japan)
Masahiro Kawakita, NHK Science & Technology Research Labs. (Japan)
Kenichiro Masaoka, NHK Science & Technology Research Labs. (Japan)
Jun Arai, NHK Science & Technology Research Labs. (Japan)
Makoto Okui, NHK Science & Technology Research Labs. (Japan)
Fumio Okano, NHK Science & Technology Research Labs. (Japan)
Yasuyuki Haino, JVC KENWOOD Holdings, Inc. (Japan)
Makoto Yoshimura, JVC KENWOOD Holdings, Inc. (Japan)
Masahito Sato, JVC KENWOOD Holdings, Inc. (Japan)


Published in SPIE Proceedings Vol. 7863:
Stereoscopic Displays and Applications XXII
Andrew J. Woods; Nicolas S. Holliman; Neil A. Dodgson, Editor(s)

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