The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 2004
Filed:
Dec. 13, 1999
Applicant:
Inventor:
Masajiro Iwasaki, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 ;
U.S. Cl.
CPC ...
G06K 9/00 ;
Abstract
An image-feature extraction method is realized by identifying to which area in a color space with a plurality of areas previously segmented thereinto each pixel belongs based on a color of each pixel which forms a prepared image; and generating a color histogram of the image based on a number of pixels which belong to each of the areas. When the generated color histogram is extracted as feature parameters representing features of the image, a color space suited to human sensibility on color and also a color space segmented into areas each suited to human sensibility on color are used as a color space.