Driver view adapter for forward looking camera

• US 9,128,354 B2
• Filed: 11/29/2012
• Issued: 09/08/2015
• Est. Priority Date: 11/29/2012
• Status: Active Grant

• Current Assignee: Bendix Commercial Vehicle Systems LLC (Estate of Heinz Hermann Thiele)
• Original Assignee: Bendix Commercial Vehicle Systems LLC (Estate of Heinz Hermann Thiele)
• Inventors: Frashure, Timothy J.
• Primary Examiner(s): Vaughn, Jr., William C
• Assistant Examiner(s): ADAMS, EILEEN M
• Application Number:
  US13/688,515
• Publication Number:
  US 20140146152A1
• Time in Patent Office: 1,013 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G03B 15/00 Special procedures for taking photographs; Apparatus therefor
• CPC Class Codes: G03B 17/17 with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
• CPC Class Codes: G03B 43/00 Testing correct operation of photographic apparatus or parts thereof
• CPC Class Codes: H04N 23/90 Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
• CPC Class Codes: H04N 7/188 Capturing isolated or intermittent images triggered by the occurrence of a predetermined event, e.g. an object reaching a predetermined position signal generation from motion picture films H04N5/253

Abstract

When monitoring the forward area in front of a vehicle, video of the forward area and the driver of the vehicle is concurrently captured by a single forward facing camera with a rearward facing mirror assembly reflects an image of the driver, who is positioned behind the forward facing camera, into the forward facing field of view of the camera. The mirror assembly is positioned in an inactive portion of the field of view of the camera so that the reflected image of the driver appears in the inactive portion of the field of view in the captured video. In this manner, synchronized video of the forward area in the driver is generated without requiring computationally expensive post processing.

Claims

1. A camera unit that facilitates concurrently monitoring a driver of a vehicle and an area in front of the vehicle, comprising:

a forward-looking camera that monitors the area in front of a vehicle on which the camera is mounted;

a rearward-facing mirror assembly coupled to the camera, wherein the mirror assembly is within a field of view of the camera and reflects an image of the driver into the camera;

wherein the camera is facing a first direction and the mirror is facing a second direction;

wherein the mirror assembly is positioned within an inactive portion of the field of view of the camera such that the mirror assembly does not impede video processing of forward elements in front of the vehicle.

2. The camera unit according to claim 1, wherein the inactive portion of the field of view occupies less than approximately a lower 25% of the field of view.

3. The camera unit according to claim 1, further comprising a rearward facing illumination source that illuminates the driver and is coupled to the camera unit.

4. The camera unit according to claim 3, wherein the illumination source is an infrared light emitting diode.

5. The camera unit according to claim 1, further comprising a processor configured to:

analyze video frames captured by the camera;

identify an inactive portion of the field of view of the camera by identifying an image region that does not change across a predefined number of video frames.

6. The camera unit according to claim 1, wherein the mirror assembly is adjustable for positioning within inactive portion of the field of view of the camera.

7. The camera unit according to claim 1, further comprising a processor configured to:

detect a trigger event; and

upon detecting the trigger event, at least one of;

cause the camera to concurrently record the area in front of the vehicle and the reflected image of the driver; and

store to memory buffered data recorded for a predetermined time period before the trigger event.

8. The camera unit according to claim 7, wherein the trigger event is a detected deceleration of the vehicle, wherein the detected deceleration is greater than a predetermined deceleration threshold.

9. A method of concurrently capturing video of a driver of a vehicle and an area in front of the vehicle via a single forward-facing camera, comprising:

monitoring an area in front of a vehicle on which the camera is mounted;

concurrently capturing video of the area in front of the vehicle and of the driver of the vehicle via a rearward-facing mirror assembly positioned within a field of view of the camera and which reflects an image of the driver into the camera;

wherein the camera is positioned in front of and facing away from a driver'"'"'s seat;

wherein the mirror assembly is positioned within an inactive portion of the field of view of the camera such that the mirror assembly does not impede a forward camera view in front of the vehicle.

10. The method according to claim 9, wherein the inactive portion of the field of view occupies approximately a top or bottom 25 % of the field of view.

11. The method according to claim 9, further comprising activating a rearward facing illumination source that illuminates the driver during a predetermined time period.

12. The method according to claim 9, further comprising:

during a setup phase, analyzing video frames captured by the camera;

identifying an inactive portion of the field of view of the camera by identifying an image region that does not change across a predefined number of video frames;

wherein the mirror assembly is adjustable for positioning within inactive portion of the field of view of the camera.

13. The method according to claim 9, further comprising:

recording video via the camera prior to a trigger event;

detecting a trigger event;

upon detecting the trigger event, at least one of;

causing the camera to concurrently record the area in front of the vehicle and the reflected image of the driver; and

storing to memory buffered data recorded for a predetermined time period before the trigger event.

14. The method according to claim 9, wherein the trigger event is a detected deceleration of the vehicle, wherein the detected deceleration is greater than a predetermined deceleration threshold.

15. The method according to claim 9, further comprising:

detecting a trigger event that causes the camera to begin recording video for a predetermined time period.

16. A vehicular video recording system that facilitates concurrently monitoring a driver of a vehicle and an area in front of the vehicle, comprising:

a forward-looking camera that monitors the area in front of a vehicle on which the camera is mounted; and

a rearward-facing mirror assembly coupled to the camera, wherein the mirror assembly is within a field of view of the camera and reflects an image of the driver into the camera;

wherein the mirror assembly is manually adjustable for positioning within inactive portion of the field of view of the camera.

17. The system according to claim 16, further comprising a processor configured to:

detect a trigger event; and

upon detecting the trigger event, at least one of;

cause the camera to concurrently record the area in front of the vehicle and the reflected image of the driver; and

store to memory buffered data recorded for a predetermined time period before the trigger event.

18. The system according to claim 16, further comprising a rearward facing illumination source that illuminates the driver and is coupled to the camera unit.

19. The system according to claim 16, wherein the trigger event is a detected deceleration of the vehicle, wherein the detected deceleration is greater than a predetermined deceleration threshold.

20. An apparatus for concurrently capturing video of a driver of a vehicle and an area in front of the vehicle via a single forward-facing camera, comprising:

monitoring means for monitoring an area in front of a vehicle on which the monitoring means is mounted;

reflecting means for reflecting an image of the driver into the monitoring means and positioned within a field of view of the monitoring means;

processing means for detecting a trigger event that causes the monitoring means to at least one of;

begin recording video for a predetermined time period; and

store to memory buffered data recorded for a predetermined time period before the trigger event;

wherein the monitoring means concurrently captures video of the area in front of the vehicle and of the driver of the vehicle via the reflecting means;

wherein the monitoring means is forward-facing and is positioned in front of a driver'"'"'s seat; and

wherein the reflecting means is positioned within inactive portion of the field of view of the monitoring means.