For AutoVu™ installations that include wheel imaging cameras, the LPR Processing Unit must include the Navigation option. This provides the system with additional navigation information to ensure that the vehicle's wheel is visible in the image.
How precise odometry is obtained
If you are using an LPR Processing Unit with the AutoVu™ Navigation option, the hardware comes with a satellite receiver that obtains satellite positioning information. In addition, the system receives odometry information from the vehicle (VSS or odometry sensor). This provides greater reliability than satellite positioning alone. For example, if you drive through a long tunnel you will lose the satellite signal, but the AutoVu™ system still knows how far and how fast you are driving, and if you change direction or speed.
The AutoVu™ system is connected to the vehicle’s reverse signal (usually by tapping the reverse lights), and to the in-vehicle computer. Some calibration is required in Genetec Patroller™.