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:
Jan. 06, 2015
Filed:
Dec. 31, 2009
Maneesha Joshi, Austin, TX (US);
Maneesha Joshi, Austin, TX (US);
TomTom North America, Inc., Lebanon, NH (US);
Abstract
Embodiments of the present invention provide a method of determining a location at which a lane divider marking changes type, comprising determining () a first type of lane divider () marking based upon a frequency spectrum determined by Fourier analysis of first image data () corresponding to a first area, determining () a second type of lane divider () marking based upon a frequency spectrum determined by Fourier analysis of second image data () corresponding to a second area, and determining () a geographic location at which the lane divider marking changes type according to a comparison of the first and second types () of lane divider marking.