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:
Feb. 25, 2014
Filed:
Apr. 14, 2011
Hailong Yu, Beijing, CN;
Donglai LI, Beijing, CN;
Wenbo Zhang, Beijing, CN;
Pingping Pan, Beijing, CN;
Weitao Gong, Beijing, CN;
Hailong Yu, Beijing, CN;
Donglai Li, Beijing, CN;
Wenbo Zhang, Beijing, CN;
Pingping Pan, Beijing, CN;
Weitao Gong, Beijing, CN;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A screen area capturing an image including the screen area; obtaining candidate boundaries of the screen area; converting the candidate boundaries into straight lines; carrying out binary image processing with regard to the captured image; obtaining boundary pixels of a maximum target area, and letting the boundary pixels serve as an outline of the maximum target area; selecting straight lines on the outline from the converted straight lines; dividing the selected straight lines into four classes; and obtaining final straight lines by carrying out straight line fitting with regard to straight lines in the respective classes so as to obtain four boundaries of the screen area.