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:
Nov. 24, 1998
Filed:
Aug. 20, 1996
Kenichi Ide, Tokyo, JP;
Takahisa Nakano, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A specific color field recognition apparatus and method are disclosed. A mechanism fetches a first image including a specific color and a second image with the specific color eliminated therefrom by picking up an image of an object having a specific color field to be recognized. A device produces a first density histogram and a second density histogram representing the number of pixels for each tone with respect to the first image and the second image, respectively. A converter determines a plurality of local maxima in the first and second images and converts the density of the first and second images in such a manner at the first image a background portion which is lowest density of the local maxima represents minimum of the gradation field, label portion which is highest density of the local maxima represents maximum of the gradation area, at the second image the background portion density represents lowest density of the gradation field, the letter density which is maximum of the local maxima represents a value which is inverted highest pixels of the local maxima of the first image.