Vehicle imaging system
A vehicle imaging system may include a first circuit board, and the system may also include an additional circuit board. The circuit boards may hold components for capturing images of vehicles as well as components for analyzing images of vehicles that have been captured. The analyzing may include performing optical character recognition on portions on images to identify characters in the images. A housing may enclose the circuit boards. The vehicle imaging system may be a license plate recognition system, a DOT number reader system, a hazardous material placard reader system, or a container code reader system, for example.
1. A license plate recognition system, comprising:
a first circuit board having components for capturing an image of a vehicle wherein the first circuit board includes a C lens mount, a lens mounted on the C lens mount and an imaging sensor;
a second circuit board mechanically and electrically coupled to the first circuit board having components for analyzing the image of the license plate captured by the first circuit board, wherein the analyzing includes locating a location of a license plate in the captured image and performing optical character recognition on the characters in the license plate to identify characters in the image for the license plate of the vehicle; and
a housing enclosing both the first circuit board and the second circuit board.
2. The license plate recognition system of claim 1 , wherein the components of the first circuit board include an imaging device for capturing the images of the vehicles.
3. The license plate recognition system of claim 2 , wherein the components of the first circuit board include control logic for the imaging device.
4. The license plate recognition system of claim 2 , wherein the components of the first circuit board include control logic for an illuminator for illuminating the vehicles.
5. The license plate recognition system of claim 4 , wherein the control logic of the illuminator is implemented in hardware.
6. The license plate recognition system of claim 5 , wherein the control logic of the illuminator is implemented in a field programmable gate array (FPGA).
7. The license plate recognition system of claim 6 , wherein the control logic of the imaging device is implemented in hardware.
8. The license plate recognition system of claim 7 , wherein the control logic of the imaging device is implemented in a field programmable gate array (FPGA).
9. The license plate recognition system of claim 5 , wherein the control logic of the imaging device and control logic of an illuminator include synchronization logic for synchronizing operation of the illuminator with the operation of the imaging device.
10. The license plate recognition system of claim 1 , wherein the components of the first circuit board include a digitizer for digitizing the images.
11. The license plate recognition system of claim 1 , wherein the image is configured to capture front and/or rear images of the vehicles.
12. A vehicle imaging system, comprising:
a printed circuit board housing:
components for capturing an image of vehicles, and components for analyzing the captured images, including
a component for performing optical character recognition on text in the captured image;
a C lens mount;
a lens mounted to the C lens mount;
a component for locating one of a license plate, a container code, a hazardous material placard or Department of Transportation number in the captured image; and
a housing for housing the printed circuit board.
13. In a vehicle imaging system, a method comprising:
setting values in hardware in the vehicle imaging system, wherein the values capture the delay between when an illuminator is triggered and when the illumination is produced and the delay between when a sensor is instructed to start an exposure and when the exposure starts; and
synchronizing the illumination provided by the illuminator and the exposure by the sensor using hardware control logic based on the set values.