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:
Oct. 23, 2012
Filed:
Feb. 04, 2010
Tao LI, Beijing, CN;
Xun Yuan, Beijing, CN;
Gang Wang, Beijing, CN;
Zhongchao Shi, Beijing, CN;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A device for detecting a shadow region in an image includes an imaging module generating a multi-channel image including brightness, red, green, and blue channels, a brightness correcting module correcting values of the brightness channel based on imaging parameters and outputting a corrected multi-channel image, a scene classifying module determining to carry out a shadow detection on the corrected multi-channel image, a shadow detecting module classifying pixels of the corrected multi-channel image into a shadow or non-shadow pixel, and generating a shadow classification mark matrix having pixels having a shadow classification mark value corresponding to the classification, a region segmentation module segmenting the multi-channel image into regions having pixels having similar color values, and generating a region mark matrix having pixels having a region mark value, and a post-processing module updating the shadow classification mark matrix based on the shadow classification mark matrix and region mark matrix.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile