Autoexposure methodology in a digital camera

Details Autoexposure methodology in a digital camera Autoexposure methodology in a digital camera

2007-02-13

2007-02-13

Srivastava, Vivek (Department: 2622)

Television

Camera, system and detail

Optics

C348S364000, C348S229100

Reexamination Certificate

active

10123689

ABSTRACT:
An improved method for automatic exposure control at a digital camera is described. In response to a user request for capture of a digital image, image data is captured on the camera's image sensor. The captured image data includes pixel values of brightness of pixels of the image sensor. A histogram of pixel values is generated based upon brightness of pixels of the image sensor. The histogram that is generated is then evaluated to determine whether an image is overexposed or underexposed. Coarse exposure settings for capture of a digital image are automatically generated based upon scaling the histogram of pixel values towards the midpoint of a pre-selected interval. The coarse exposure settings and image data that have been captured are evaluated to determine whether light sources are present. In the event that light sources are determined not to be present, the coarse exposure settings are adjusted based upon not scaling said histogram beyond the largest histogram value.

REFERENCES:
patent: 5235428 (1993-08-01), Hirota et al.
patent: 6486915 (2002-11-01), Bell et al.
patent: 6630960 (2003-10-01), Takahashi et al.
patent: 6970198 (2005-11-01), Schinner et al.

Affiliated with

Also associated with

Rating

Autoexposure methodology in a digital camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Autoexposure methodology in a digital camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Autoexposure methodology in a digital camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3810547