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Proceedings Paper

Broadband color filters with arbitrary spectral transmittance using a liquid crystal tunable filter (LCTF)
Author(s): Kanae Miyazawa; Kazuhiko Kurashiki; Markku Hauta-Kasari; Satoru Toyooka
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Paper Abstract

We propose an experimental setup for an imaging system using a liquid crystal tunable filter (LCTF) to implement rewritable transparent broad-band color filters with arbitrary spectral transmittances. Holding-time for each transmitting wavelength of the LCTF is controlled corresponding to a computationally designed filter function, and a time-integrated intensity image is taken with a monochrome CCD camera through the LCTF. The averaged norm error between the implemented and the expected filter functions was about 10%. The system can be applied to spectral estimation, spectral based classification and spectral based parametr estimation.

Paper Details

Date Published: 6 June 2002
PDF: 4 pages
Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); doi: 10.1117/12.464569
Show Author Affiliations
Kanae Miyazawa, Univ. of Joensuu (Japan)
Kazuhiko Kurashiki, Saitama Univ. (Japan)
Markku Hauta-Kasari, Univ. of Joensuu (Finland)
Satoru Toyooka, Saitama Univ. (Japan)


Published in SPIE Proceedings Vol. 4421:
9th Congress of the International Colour Association

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