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NOV 17, 2009

Development of a Color and Near-infrared Hyperspectral Imaging System Weilin Wang University of Georgia Tifton, GA, 31794 U.S.A Major professor: Changying Li. NOV 17, 2009. Outline. Project Background Hardware Software Calibration Future work. Background. FoodPAC Grant

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NOV 17, 2009

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  1. Development of a Color and Near-infrared Hyperspectral Imaging SystemWeilin Wang University of Georgia Tifton, GA, 31794 U.S.A Major professor: Changying Li NOV 17, 2009

  2. Outline • Project Background • Hardware • Software • Calibration • Future work

  3. Background • FoodPAC Grant • Vidalia Sweet Onions • Postharvest problems • Sensor/Data fusion • Machine Vision • NIR Spectroscopy • Multispectral Imaging

  4. System Architecture • Multi-tier • Logically independent Schematic of LCTF-based hyperspectral imaging system

  5. Hardware Setup • InGaAs sensor (SUI320KTS-1.7RT, Sensors Unlimited, US) • LCTF (Varispec LNIR, CRI, US) • Lens (Nikkor 50mm f/1.4 AF, Nikon, JP) • Color camera (Lifecam, Microsoft, US) • Four 10W TungstenHalogen Lamps (Brightscapes, Intermatic, US) • 950nm-1700nm Schematic of LCTF-based hyperspectral imaging system

  6. Hardware Schematic Schematic of LCTF-based hyperspectral imaging system

  7. Software • Labview 8.2 • ENVI 4.7 • IDL (Interactive Data Language)

  8. Software Architecture Schematic of LCTF-based hyperspectral imaging system

  9. Calibration • Errors introduced by every component • Lighting selection • MAKE IT FLAT!

  10. Future work • Improve the performance of the system • Applications on Onions • Sensor fusion with other sensors

  11. Thanks for attention!

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