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Proceedings Paper

Development of filter exchangeable 3CCD camera for multispectral imaging acquisition
Author(s): Hoyoung Lee; Soo Hyun Park; Moon S. Kim; Sang Ha Noh
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Paper Abstract

There are a lot of methods to acquire multispectral images. Dynamic band selective and area-scan multispectral camera has not developed yet. This research focused on development of a filter exchangeable 3CCD camera which is modified from the conventional 3CCD camera. The camera consists of F-mounted lens, image splitter without dichroic coating, three bandpass filters, three image sensors, filer exchangeable frame and electric circuit for parallel image signal processing. In addition firmware and application software have developed. Remarkable improvements compared to a conventional 3CCD camera are its redesigned image splitter and filter exchangeable frame. Computer simulation is required to visualize a pathway of ray inside of prism when redesigning image splitter. Then the dimensions of splitter are determined by computer simulation which has options of BK7 glass and non-dichroic coating. These properties have been considered to obtain full wavelength rays on all film planes. The image splitter is verified by two line lasers with narrow waveband. The filter exchangeable frame is designed to make swap bandpass filters without displacement change of image sensors on film plane. The developed 3CCD camera is evaluated to application of detection to scab and bruise on Fuji apple. As a result, filter exchangeable 3CCD camera could give meaningful functionality for various multispectral applications which need to exchange bandpass filter.

Paper Details

Date Published: 4 May 2012
PDF: 8 pages
Proc. SPIE 8369, Sensing for Agriculture and Food Quality and Safety IV, 836906 (4 May 2012); doi: 10.1117/12.921213
Show Author Affiliations
Hoyoung Lee, Seoul National Univ. (Korea, Republic of)
USDA Agricultural Research Service (United States)
Soo Hyun Park, Seoul National Univ. (Korea, Republic of)
Moon S. Kim, USDA Agricultural Research Service (United States)
Sang Ha Noh, Seoul National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 8369:
Sensing for Agriculture and Food Quality and Safety IV
Moon S. Kim; Shu-I Tu; Kuanglin Chao, Editor(s)

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