Patent ID: 7272502
Filing Date: 2007-09-18
Classification: G01S,G05D,G08G

Abstract:
1. An RFID tag installation system using two CCD cameras, two GPS receivers and an INS, being installed inside and outside of a vehicle, the system comprising: a vehicle position (x, y, z) and yaw extractor using the two GPS receivers; an orientation (position, attitude) extractor for the vehicle using the INS; a GPS/INS integrator for INS error correction in real time or a post-processing stage; a camera interior/exterior orientation extractor for estimating lens distortion, focal length, principle point, and orientation of the CCD camera; a target position extractor for finding 3-dimensional coordinates of a road in which the RFID tag is installed using images from the two CCD cameras and data from the GPS/INS integrator; a road information storage for providing road information including a speed limit and a route number of a road in which the RFID tag is installed; a RFID tag writer for inputting the 3-dimensional coordinates and road information to the RFID tag; and a RFID tag installer for installing the RFID tag on the road.