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Biological sample evaluation using a line-scan based SWIR hyperspectral imaging system

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2016 ASABE Annual International Meeting  162461739.(doi:10.13031/aim.20162461739)
Authors:   Seok Min Hong, Hoonsoo Lee, Insuck Baek, Mirae Oh, Moon S Kim
Keywords:   hyperspectral imaging, short wave infrared, detection, milk powder, melamine, band ratio

Abstract. A new line-scan hyperspectral imaging system was developed to enable short wavelength infrared (SWIR) imagery for biological sample evaluation. Critical sensing components include a SWIR imaging spectrograph and an HgCdTe (MCT) focal plane array detector. To date, agricultural applications of infrared hyperspectral imaging have been limited to the near-infrared spectral region up to 1700 nm. This new SWIR hyperspectral imaging system has extended the hyperspectral reflectance imaging capabilities up to 2500 nm for nondestructive evaluation of biological samples. This paper provides a detailed description of the newly developed SWIR hyperspectral imaging system. In addition, preliminary results for detection of melamine in milk powders using the new SWIR hyperspectral imaging system and a band ratio algorithm are presented.

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