Development of Filter Exchangeable 3CCD Camera for Multispectral Imaging Acquisition

被引:0
|
作者
Lee, Hoyoung [1 ]
Park, Soo Hyun [1 ]
Kim, Moon S. [3 ]
Noh, Sang Ha [1 ,2 ]
机构
[1] Seoul Natl Univ, Dept Biosyst & Biomat Sci & Engn, Seoul 151921, South Korea
[2] Seoul Natl Univ, Res Inst Agr & Life Sci, Seoul 151921, South Korea
[3] USDA, Anim Nat Resources Inst, Environm Microbiol & Food Safety Lab, Beltsville, MD 20705 USA
来源
SENSING FOR AGRICULTURE AND FOOD QUALITY AND SAFETY IV | 2012年 / 8369卷
关键词
3; CCD; image splitter; multispectral imaging; surface defect; Fuji apple; QUALITY EVALUATION; SYSTEM; SAFETY;
D O I
暂无
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
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.
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页数:8
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