BUNDLING NIGHT VISION AND OTHER DRIVER ASSISTANCE SYSTEMS (DAS) USING NEAR INFRA RED (NIR) ILLUMINATION AND A ROLLING SHUTTER
First Claim
1. A system mountable in a motor vehicle, the system comprising:
- a camera configured to scan image data alternately line-by-line into a plurality of image frames;
a processor configured to receive the image data from the camera;
a near infra-red illuminator configured to provide a near infra-red illumination in the field of view of the camera, wherein the near infrared illumination oscillates with an with an oscillation frequency and illumination duty cycle; and
a synchronization mechanism configured to synchronize the oscillation frequency and the illumination duty cycle line-by-line with the exposure of the images frames.
2 Assignments
0 Petitions
Accused Products
Abstract
A system mountable in a motor vehicle. The system includes a camera and a processor configured to receive image data from the camera. The camera includes a rolling shutter configured to capture the image data during a frame period and to scan and to read the image data into multiple image frames. A near infra-red illuminator may be configured to provide a near infra-red illumination cone in the field of view of the camera. The near infrared illumination oscillates with an illumination period. A synchronization mechanism may be configured to synchronize the illumination period to the frame period of the rolling shutter. The frame period may be selected so that the synchronization mechanism provides a spatial profile of the near infra-red illumination cone which may be substantially aligned vertically to a specific region, e.g. near the center of the image frame.
-
Citations
19 Claims
-
1. A system mountable in a motor vehicle, the system comprising:
-
a camera configured to scan image data alternately line-by-line into a plurality of image frames; a processor configured to receive the image data from the camera; a near infra-red illuminator configured to provide a near infra-red illumination in the field of view of the camera, wherein the near infrared illumination oscillates with an with an oscillation frequency and illumination duty cycle; and a synchronization mechanism configured to synchronize the oscillation frequency and the illumination duty cycle line-by-line with the exposure of the images frames. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method performable by a system mountable in a vehicle, the system including a camera and a processor, the method comprising:
-
scanning by the camera to read image data alternately line-by-line into a plurality of image frames; receiving the image data by the processor; and illuminating to provide near infra-red illumination in the field of view of the camera while oscillating the near infra-red illumination with an oscillation frequency and illumination duty cycle and while synchronizing the oscillation frequency and the illumination duty cycle line-by-line with the exposure of the images frames. - View Dependent Claims (15, 16, 17, 18, 19)
-
Specification