The invention discloses a strong
background light license plate
recognition system and method, relates to the technical field of
optics, and aims to solve the problem that a driving vehicle
license plate is difficult to recognize under the conditions of strong light interference and low light in traffic monitoring. The
system is composed of a
laser illuminator, a polarizing film, a visible light color camera, a visible light color polarization camera, an attenuation sheet, a
data acquisition system, a power supply module, a controller, an
image processor, a
laser beam expanding lens group, a visible light
imaging lens group and a visible light
polarization imaging lens group. Compared with a traditional traffic monitoring probe, the
system can effectively restrain strong light interference generated by an automobile
headlamp at night, and the imaging
contrast ratio and recognition precision of a
license plate in the strong light background are improved. The visible light color camera and the visible light color polarization camera are combined for use, the vehicle contour and the surrounding
background image obtained by the visible light color camera are reserved, detail information and
background information lost by the polarization image can be effectively supplemented, a basis is provided for judgment of management personnel, and
advantage complementation is achieved.