DOI QR코드

DOI QR Code

Detection Algorithm for Cracks on the Surface of Tomatoes using Multispectral Vis/NIR Reflectance Imagery

  • Jeong, Danhee (Deasang central R&D center) ;
  • Kim, Moon S. (Environmental Microbiology and Food Safety Laboratory, Agricultural Research Service, U.S. Department of Agriculture) ;
  • Lee, Hoonsoo (Department of Biosystems Machinery Engineering, Chungnam National University) ;
  • Lee, Hoyoung (Environmental Microbiology and Food Safety Laboratory, Agricultural Research Service, U.S. Department of Agriculture) ;
  • Cho, Byoung-Kwan (Department of Biosystems Machinery Engineering, Chungnam National University)
  • 투고 : 2013.07.29
  • 심사 : 2013.08.16
  • 발행 : 2013.09.01

초록

Purpose: Tomatoes, an important agricultural product in fresh-cut markets, are sometimes a source of foodborne illness, mainly Salmonella spp. Growth cracks on tomatoes can be a pathway for bacteria, so its detection prior to consumption is important for public health. In this study, multispectral Visible/Near-Infrared (NIR) reflectance imaging techniques were used to determine optimal wavebands for the classification of defect tomatoes. Methods: Hyperspectral reflectance images were collected from samples of naturally cracked tomatoes. To classify the resulting images, the selected wavelength bands were subjected to two-band permutations, and a supervised classification method was used. Results: The results showed that two optimal wavelengths, 713.8 nm and 718.6 nm, could be used to identify cracked spots on tomato surfaces with a correct classification rate of 91.1%. The result indicates that multispectral reflectance imaging with optimized wavebands from hyperspectral images is an effective technique for the classification of defective tomatoes. Conclusions: Although it can be susceptible to specular interference, the multispectral reflectance imaging is an appropriate method for commercial applications because it is faster and much less expensive than Near-Infrared or fluorescence imaging techniques.

키워드

참고문헌

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