ACCURATE POSITION DETERMINATION NEAR EXIT LANES

摘要

An in-vehicle system for determining whether a vehicle has moved off of a main roadway and into an exit lane. A navigation unit determines that an exit is approaching on a first side of the vehicle, and a camera obtains image data regarding lane markings and exit signs in response to a notification that the exit is approaching. An image processor identifies predetermined patterns among the lane markings, including V-shaped patterns or Y-shaped patterns. The system determines that the vehicle has moved into the exit lane in response to an identification of one of the predetermined patterns on a second side of the vehicle opposite the first side of the vehicle. The system may verify its determination based on recognition of an exit sign on the second side of the vehicle.

主权项

1. An in-vehicle system for determining whether a vehicle has moved off of a main roadway and into an exit lane, the system comprising:
a navigation unit for determining that an exit is approaching on a side of the main roadway; a camera for obtaining image data regarding lane markings and exit signs in response to a determination by the navigation unit that the exit is approaching; an image processor for identifying a predetermined pattern among the lane markings and for determining a side of the vehicle on which the predetermined pattern exists, wherein
the predetermined patterns include a Y-shaped configuration of solid line lane markings and a V-shaped configuration of solid line lane markings; means for determining whether the vehicle has moved into the exit lane based on an assessment of the side of the main roadway on which the exit is approaching and the side of the vehicle on which the predetermined pattern exists; and means for verifying the determination by recognizing an exit sign and determining a side of the vehicle on which the exit sign exists.