Invention Grant
US08014569B2 Method and apparatus for performing qualitative and quantitative analysis of produce (fruit, vegetables) using spatially structured illumination 有权
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

Method and apparatus for performing qualitative and quantitative analysis of produce (fruit, vegetables) using spatially structured illumination
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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