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. 12, 2019
Filed:
Jun. 26, 2017
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Yusuke Nonaka, Kawasaki, JP;
Eigo Segawa, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An image processing method includes: identifying a dark region by binarizing an image captured using an imaging device; generating a line image of the dark region by thinning the dark region; identifying a first multiple pairs of pixels that are included in a pixel group forming the generated line image and are separated from each other by a predetermined threshold or more; calculating a first variance of gradients of lines connecting the respective pairs in the first plurality of pairs; identifying a second plurality of pairs of pixels that are included in the pixel group forming the generated line image and are separated from each other by values smaller than the predetermined threshold; calculating a second variance of gradients of lines connecting the respective pairs in the second plurality of pairs; and evaluating the dark region based on the first variance and the second variance.