Apparatus and method for lane marking analysis
First Claim
1. A method of determining a location at which a lane divider marking changes type, comprising:
- determining a lane divider marking type separating a first lane from a second lane for a first road segment based upon a frequency spectrum determined by Fourier analysis of first image data corresponding to a first area;
determining a lane divider marking type separating the first lane from the second lane for a second road segment 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 separating the first lane from the second lane changes type according to a comparison of the lane divider marking types for the first and second road segments.
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Accused Products
Abstract
Embodiments of the present invention provide a method of determining a location at which a lane divider marking changes type, comprising determining (350) a first type of lane divider (120) marking based upon a frequency spectrum determined by Fourier analysis of first image data (431) corresponding to a first area, determining (350) a second type of lane divider (130) marking based upon a frequency spectrum determined by Fourier analysis of second image data (432) corresponding to a second area, and determining (360) a geographic location at which the lane divider marking changes type according to a comparison of the first and second types (120, 130) of lane divider marking.
14 Citations
20 Claims
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1. A method of determining a location at which a lane divider marking changes type, comprising:
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determining a lane divider marking type separating a first lane from a second lane for a first road segment based upon a frequency spectrum determined by Fourier analysis of first image data corresponding to a first area; determining a lane divider marking type separating the first lane from the second lane for a second road segment 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 separating the first lane from the second lane changes type according to a comparison of the lane divider marking types for the first and second road segments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 16, 17, 18, 19)
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10. An apparatus, comprising:
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a processor; wherein the processor has a lane divider analysis module executing thereon, wherein the lane divider analysis module is arranged to determine a lane divider marking type separating a first lane from a second lane for a first road segment based upon a frequency spectrum of image data corresponding to a first area of a road, to determine a lane divider marking type separating the first lane from the second lane for a second road segment based upon a frequency spectrum of image data corresponding to a second area of the road, and to determine a location at which a lane divider marking separating the first lane from the second lane changes type according to a comparison of lane divider marking types for the first and second road segments. - View Dependent Claims (11, 12, 13, 14, 15)
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20. A non-transitory computer-readable medium which stores a set of instructions which when executed performs a method of determining a location at which a lane divider marking changes type, the method executed by the set of instructions comprising:
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determining a lane divider marking type separating a first lane from a second lane for a first road segment based upon a frequency spectrum determined by Fourier analysis of first image data corresponding to a first area; determining a lane divider marking type separating the first lane from the second lane for a second road segment 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 separating the first lane from the second lane changes type according to a comparison of the lane divider marking types for the first and second road segments.
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Specification