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. 25, 2014
Filed:
Apr. 14, 2011
Jing Wang, Osaka, JP;
Hirokazu Koizumi, Osaka, JP;
Toshiyuki Kamiya, Osaka, JP;
NEC Solution Innovators, Ltd., Tokyo, JP;
Abstract
A three-dimensional topographical data precision improving device () removing noise that occurs in water regions of three-dimensional topographical data comprises a water region specifying unit () specifying the range of any one water region; a feature extraction unit () extracting feature values within any one water region that describe altitude distribution pattern of each local region in the three-dimensional topographical data; a segmentation unit () segmenting the whole range into candidate water regions and non-water regions by comparing the feature values of the specified water region with those of each point in the three-dimensional topographical data; a water region extraction unit () extracting water regions from the candidate water regions; and a plane creation unit () creating a corrected plane of each water region using the altitudes of the surrounding non-water regions and replacing the water region extracted by the water region extraction unit () with the corrected plane.