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Proceedings Paper

Near-infrared imaging equipment that detects small organic substances in thick foods
Author(s): Souphaphone Phetchalern; Hiroto Tashima; Yuya Ishii; Takeshi Ishiyama; Shinichi Arai; Mitsuo Fukuda
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Paper Abstract

We have developed near-infrared imaging equipment that can detect small organic substances in foodstuffs with thicknesses of more than 1 mm. The equipment is composed of a high output laser diode and a CMOS camera. The irradiated light power distribution was highly uniform with a maximum optical density of 1.3 W/cm2. A 0.3-mmdiameter wooden stick covered with a 2-mm-thick layer of ham can easily be distinguished in the images. The bones in fish and in chicken wing sticks could also be distinguished. The thicknesses of the fish and the chicken wing sticks were approximately 30 mm and 20 mm, respectively. We eliminated the low spatial frequency components from the images to improve the image contrast.

Paper Details

Date Published: 25 September 2014
PDF: 6 pages
Proc. SPIE 9192, Current Developments in Lens Design and Optical Engineering XV, 91921A (25 September 2014); doi: 10.1117/12.2061455
Show Author Affiliations
Souphaphone Phetchalern, Toyohashi Univ. of Technology (Japan)
Hiroto Tashima, Toyohashi Univ. of Technology (Japan)
Yuya Ishii, Toyohashi Univ. of Technology (Japan)
Takeshi Ishiyama, Toyohashi Univ. of Technology (Japan)
Shinichi Arai, Toyohashi Univ. of Technology (Japan)
Mitsuo Fukuda, Toyohashi Univ. of Technology (Japan)

Published in SPIE Proceedings Vol. 9192:
Current Developments in Lens Design and Optical Engineering XV
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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