Patent ID: 9286679
Filing Date: 2016-03-15
CPC Classification: G06K,G06T

Claim Text:
1. A method for state of health estimation and misalignment correction in a vehicle lane management system, said method comprising: providing lane information for a vehicle from a first lane sensing system and a second lane sensing system onboard the vehicle, where the lane information is stored as a plurality of time steps in a circular data buffer; calibrating the lane information from the first lane sensing system based on an independent source of lane data, where the independent source is not the second lane sensing system; computing, using a microprocessor, a correlation coefficient between the lane information from the first lane sensing system and the lane information from the second lane sensing system; computing a state of health of the lane management system based on the correlation coefficient; comparing the state of health of the lane management system to a predetermined threshold value, and issuing a warning message if the state of health is less than the threshold value; computing a linear regression relationship, including a scale factor and an offset value, between the lane information from the first lane sensing system and the lane information from the second lane sensing system; correcting the lane information from the second lane sensing system using the scale factor and the offset value; and fusing the lane information from the first lane sensing system with the lane information from the second lane sensing system after correcting.