Invention Grant
- Patent Title: Method and apparatus for performing qualitative and quantitative analysis of produce (fruit, vegetables) using spatially structured illumination
- Patent Title (中): 使用空间结构照明进行产品(水果,蔬菜)定性和定量分析的方法和设备
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Application No.: US11927396Application Date: 2007-10-29
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Publication No.: US08014569B2Publication Date: 2011-09-06
- Inventor: Anthony J. Durkin , David Cuccia , Frederic Bevilacqua , Bruce J. Tromberg
- Applicant: Anthony J. Durkin , David Cuccia , Frederic Bevilacqua , Bruce J. Tromberg
- Applicant Address: US CA Oakland
- Assignee: The Regents of the University of California
- Current Assignee: The Regents of the University of California
- Current Assignee Address: US CA Oakland
- Agent Marcus C. Dawes; Daniel L. Dawes
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G01N21/00

Abstract:
A method and an apparatus for noninvasively and quantitatively determining spatially resolved absorption and reduced scattering coefficients over a wide field-of-view of a food object, including fruit or produce, uses spatial-frequency-domain imaging (SFDI). A single modulated imaging platform is employed. It includes a broadband light source, a digital micromirror optically coupled to the light source to control a modulated light pattern directed onto the food object at a plurality of selected spatial frequencies, a multispectral camera for taking a spectral image of a reflected modulated light pattern from the food object, a spectrally variable filter optically coupled between the food object and the multispectral camera to select a discrete number of wavelengths for image capture, and a computer coupled to the digital micromirror, camera and variable filter to enable acquisition of the reflected modulated light pattern at the selected spatial frequencies.
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