Systems and methods for detecting obstructions in a camera field of view

摘要

A system mounted on a vehicle for detecting an obstruction on a surface of a window of the vehicle, a primary camera is mounted inside the vehicle behind the window. The primary camera is configured to acquire images of the environment through the window. A secondary camera is focused on an external surface of the window, and operates to image the obstruction. A portion of the window, i.e. window region is subtended respectively by the field of view of the primary camera and the field of view of the secondary camera. A processor processes respective sequences of image data from both the primary camera and the secondary camera.

主权项

1. A system mountable on a vehicle, the system comprising:
a primary camera configured to acquire a plurality of primary images of the environment through the window; a secondary camera adapted to focus on at least a portion of a surface of the window to acquire a secondary image of an obstruction when present on the surface, wherein a region of the window is subtended by respective fields of view of the primary camera and the secondary camera; and a processor adapted to process and continuously monitor the secondary image for the obstruction; wherein the processor is configured to activate a low visibility mode of the primary camera when the obstruction is detected in the secondary image.