Systems and methods for detecting obstructions in a camera field of view
First Claim
Patent Images
1. A system for detecting an obstruction on a window of a vehicle, comprising:
- a primary camera configured to acquire a first image through the window of the vehicle, wherein the first image is an image of an environment outside the vehicle;
a secondary camera configured to acquire a second image; and
a processor configured to detect at least one suspected obstruction on a surface of the window based on the second image,wherein a first region of the window is subtended by a field of view of the primary camera and a second region of the window is subtended by a field of view of the secondary camera, and the first region and the second region of the window overlap at least in part.
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Abstract
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.
15 Citations
20 Claims
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1. A system for detecting an obstruction on a window of a vehicle, comprising:
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a primary camera configured to acquire a first image through the window of the vehicle, wherein the first image is an image of an environment outside the vehicle; a secondary camera configured to acquire a second image; and a processor configured to detect at least one suspected obstruction on a surface of the window based on the second image, wherein a first region of the window is subtended by a field of view of the primary camera and a second region of the window is subtended by a field of view of the secondary camera, and the first region and the second region of the window overlap at least in part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for detecting an obstruction on a window of a vehicle, the method comprising:
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acquiring, by a primary camera, a first image through the window of the vehicle, wherein the first image is an image of an environment outside the vehicle; acquiring by a secondary camera a second image; wherein a first region of the window is subtended by a field of view of the primary camera and a second region of the window is subtended by a field of view of the secondary camera, wherein the first region and the second region of the window overlap at least in part; and detecting at least one suspected obstruction on a surface of the window based on the second image. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification