Optics: measuring and testing – By shade or color – With color transmitting filter
Patent
1996-12-02
1998-01-06
McGraw, Vincent P.
Optics: measuring and testing
By shade or color
With color transmitting filter
356419, G01N 2127
Patent
active
057060932
ABSTRACT:
A color classification apparatus for classifying the color component of a target object includes an imaging optical system, an image pickup device, optical bandpass filters, a transmission wavelength selection unit, a storage unit, a read unit, and a correction unit. The image pickup device is arranged on the imaging plane of the imaging optical system. The optical bandpass filters are optically arranged upstream the image pickup device, and have a plurality of different selectable optical transmission wavelength bands. The transmission wavelength selection unit selects one transmission wavelength band from the plurality of optical transmission wavelength bands. The storage unit stores each image information which has passed through the optical bandpass filter having the transmission wavelength band selected by the transmission wavelength selection unit and is picked up by the image pickup device, and transmission wavelength band information selected by the transmission selection means in correspondence with each other. The read unit performs read access, from the storage unit, to an area corresponding to the target object in the image information. In accordance with a positional shift of each image information of the target object stored in the storage means, the correction unit corrects the area of each image information to be read by the read unit.
REFERENCES:
patent: 5164795 (1992-11-01), Conway
patent: 5221959 (1993-06-01), Ohyama et al.
"Image Classification by the Foley-Sammon Transform", by Q. Tian, et al, Optical Engineering, vol. 25, No. 7, pp. 834-840, Jul., 1986.
McGraw Vincent P.
Olympus Optical Co,. Ltd.
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