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Sensors 2014, 14(11), 20262-20273; doi:10.3390/s141120262

Development of a Portable 3CCD Camera System for Multispectral Imaging of Biological Samples

1
Environmental Microbial and Food Safety Laboratory, Beltsville Agricultural Research Center Agricultural Research Service, United States Department of Agriculture, 10300 Baltimore Ave, Beltsville, MD 20705, USA
2
Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 151-921, Korea
3
National Academy of Agricultural Science, Rural Development Administration, 150 Suinro, Gwonseon-gu, Suwon, Gyeonggi-do 441-100, Korea
*
Author to whom correspondence should be addressed.
Received: 16 September 2014 / Revised: 20 October 2014 / Accepted: 21 October 2014 / Published: 27 October 2014
(This article belongs to the Section Physical Sensors)
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Abstract

Recent studies have suggested the need for imaging devices capable of multispectral imaging beyond the visible region, to allow for quality and safety evaluations of agricultural commodities. Conventional multispectral imaging devices lack flexibility in spectral waveband selectivity for such applications. In this paper, a recently developed portable 3CCD camera with significant improvements over existing imaging devices is presented. A beam-splitter prism assembly for 3CCD was designed to accommodate three interference filters that can be easily changed for application-specific multispectral waveband selection in the 400 to 1000 nm region. We also designed and integrated electronic components on printed circuit boards with firmware programming, enabling parallel processing, synchronization, and independent control of the three CCD sensors, to ensure the transfer of data without significant delay or data loss due to buffering. The system can stream 30 frames (3-waveband images in each frame) per second. The potential utility of the 3CCD camera system was demonstrated in the laboratory for detecting defect spots on apples. View Full-Text
Keywords: multispectral imaging; portable 3CCD Camera; beam splitter; prisms; parallel processing; apple defect detection multispectral imaging; portable 3CCD Camera; beam splitter; prisms; parallel processing; apple defect detection
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lee, H.; Park, S.H.; Noh, S.H.; Lim, J.; Kim, M.S. Development of a Portable 3CCD Camera System for Multispectral Imaging of Biological Samples. Sensors 2014, 14, 20262-20273.

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