Patent ID: 11920950
Assignee: CYBERNET SYSTEMS CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. A system for generating precise road map data, comprising:
a plurality of vehicles, each vehicle carrying a GPS receiver operative to acquire and store raw GPS coordinates, and inertial sensor measuring acceleration and turn rate data, and a video camera acquiring image data as each vehicle travels along a road path;
wherein the raw GPS coordinates, inertial sensor data and image data acquired by each vehicle define raw road track data defining the same road path travelled by each respective vehicle;
a processor operative to receive the raw road track data from the plurality of vehicles and apply a curve-fitting algorithm to the raw road track data to generate improved road track data defining the road path; and
wherein the improved road track data is stored in a database for subsequent use by the same or different vehicles when traveling along the road path.