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:
May. 03, 2011
Filed:
Mar. 09, 2005
Akihiro Watanabe, Nagoya, JP;
Makoto Nishida, Toyota, JP;
Akihiro Watanabe, Nagoya, JP;
Makoto Nishida, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A lane boundary detector includes an edge point extracting unit that extracts a plurality of edge points of a lane sign from the input image, and an edge line extracting unit that extracts a plurality of edge lines of the lane sign from the edge points to formulate a position and a direction of each of the edge lines as a straight line on the road surface, using a parameter set consisting of at least two variables. The detector further includes a branch point detecting unit that determines whether a crossing point of two of the edge lines can be a branch point of the lane, based on whether a characteristic difference vector defined with the variables with respect to the two edge lines falls within a predetermined appropriate range, and a lane boundary determining unit that determines the left and the right boundary positions of the lane.