Gain Control Method For A Camera To Support Multiple Conflicting Applications Concurrently

• US 20070024724A1
• Filed: 07/25/2006
• Published: 02/01/2007
• Est. Priority Date: 07/25/2005
• Status: Abandoned Application

• Current Assignee: Mobileye Technologies Limited (Intel Corporation)
• Sponsoring Entity: Mobileye Technologies Limited (Intel Corporation)
• Inventors: Stein, Gideon, Wolfovitz, Uri
• Time in patent office: 0 Days
• US Class Current: 348/255
• CPC Class Codes: H04N 5/20 Circuitry for controlling amplitude response
• CPC Class Codes: H04N 5/243 by influencing the picture signal , e.g. signal amplitude gain control H04N5/2352 takes precedence

Abstract

A gain control method for setting the gain control channels of a camera such that it enables the support of multiple conflicting applications which camera is performing concurrently, including using one channel, for example the Green channel, for B&W image applications, and the other two channels for color image applications or any other multiple application. The gain control method of the present invention is also applicable to color cameras and also to B&W cameras that have more than one gain control channel.

Claims

1. A gain control method for a camera used to image an automotive environment, which camera comprises more than one gain control channel, the method including:

(a) setting gain of a first gain control channel, responsive to a first imaging application type; and

(b) setting gain of a second gain control channel responsive to a second imaging application type.

2. The gain control method of claim 1, wherein at least one of said applications type is a B&

W image application.

3. The gain control method of claim 1, wherein at least one of said applications type is a color image application, for example, redness detection applications, blueness detection applications and/or greenness detection applications or and combination therein.

4. The gain control method of claim 1, wherein said camera is a color camera.

5. The gain control method of claim 1, wherein said camera is a B&

W camera.

6. A gain control method for a camera, which camera comprises at least three different gain control channels, including:

(a) setting gain of a first gain control channel according to a first application type;

(b) setting gain of a second gain control channel according to a second application type; and

(c) setting gain of a third gain control channel according to a third application type.

7. The gain control method of claim 6, wherein at least one of said applications type is a B&

W image application.

8. The gain control method of claim 6, wherein at least one of said applications type is a color image application, for example, redness detection applications, blueness detection applications and/or greenness detection applications or and combination therein.

9. The gain control method of claim 6, wherein said camera is a color camera.

10. The gain control method of claim 6, wherein said camera is a B&

W camera.

11. A method of controlling a camera used to image a roadway environment, the camera having a plurality of gain channels and the method comprising:

setting gain of a first channel of the plurality of channels to emphasize a first at least one feature typical of a roadway environment in an image of the roadway environment; and

setting gain of a second channel of the plurality of channels to emphasize a second at least one feature typical of a roadway environment that is different from the first at least one feature in an image of the roadway environment.