System and method for periodic lane marker identification and tracking
First Claim
1. A system for periodic lane marker identification comprising:
- at least one imager configured to capture image data corresponding to a plurality of images exterior of a vehicle;
a processor in communication with the at least one imager wherein the processor is configured to;
convert the image data from a relative coordinate system to a world coordinate system;
process a first sample of the image data in a first direction and a second sample of the image data in a second direction to identify a potential raised road marker;
define a box encompassing at least a portion of the potential raised road marker based on the first sample and the second sample; and
identify a detected raised road marker from the potential raised road marker based on an intensity of a plurality of points located in the box.
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0 Petitions
Accused Products
Abstract
A system and method are disclosed for determining the presence and period of dashed line lane markers in a roadway. The system includes an imager configured to capture a plurality of high dynamic range images exterior of the vehicle and a processor, in communication with the at least one imager such that the processor is configured to process at least one high dynamic range image. The period of the dashed lane markers in the image is calculated for detecting the presence of the dashed lane marker and for tracking the vehicle within the markers. The processor communicates an output for use by the vehicle for use in lane departure warning (LDW) and/or other driver assist features.
45 Citations
20 Claims
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1. A system for periodic lane marker identification comprising:
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at least one imager configured to capture image data corresponding to a plurality of images exterior of a vehicle; a processor in communication with the at least one imager wherein the processor is configured to; convert the image data from a relative coordinate system to a world coordinate system; process a first sample of the image data in a first direction and a second sample of the image data in a second direction to identify a potential raised road marker; define a box encompassing at least a portion of the potential raised road marker based on the first sample and the second sample; and identify a detected raised road marker from the potential raised road marker based on an intensity of a plurality of points located in the box. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for periodic lane marker identification comprising:
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at least one imager configured to capture image data corresponding to a plurality of images exterior of a vehicle; a processor in communication with the at least one imager wherein the processor is operable to; convert the image data from a relative coordinate system to a world coordinate system; process a first slice of the image data in a first direction to identify a potential raised road marker; in response to identifying the potential raised road marker in the first direction corresponding to the potential raised road marker, process a second slice in a second direction to identify a second intensity of pixels proximate to the potential raised road marker; compare a first width of the first intensity of pixels to a second width of the second intensity of pixels to further identify the potential raised road marker; and in response to the further identification of the raised road marker, identify a detected raised road marker from the potential raised road marker based on an intensity of a plurality of points located in a box defined by the first intensity of pixels and the second intensity of pixels. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A system for periodic lane marker identification comprising:
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at least one imager configured to capture image data corresponding to a plurality of images exterior of a vehicle; a processor in communication with the at least one imager wherein the processor is configured to; convert the image data from a relative coordinate system to a world coordinate system; process a first slice of the image data in a horizontal direction to determine a first width; detect a potential raised lane marker from the first slice of the image data, wherein; upon not detecting the potential raised lane marker, the processor processes the first slice of a different portion of the image data to detect the potential raised lane marker; and upon detecting the potential raised lane marker, the processor processes a second slice of the image data in a vertical direction to determine a second width to identify a potential raised road marker; and further identify the potential raised road marker by comparing the first width to the second width. - View Dependent Claims (17, 18, 19, 20)
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Specification