Method and system for adjusting exposure settings of video cameras
AssigneeSensormatic Electronics Corporation
InventorSteven W. Schieltz
Life of this patent
Estimating the term…
Abstract
A system and method to enhance dark areas of a scenes while preventing bright areas of the scenes from distorting or skewing exposure settings of video cameras. The video cameras capture images and identify bright areas in the captured images. The video cameras calculate exposure settings while excluding the bright areas in the captured images to enhance the dark areas in the captured images. Camera control parameters are then adjusted based on the calculated exposure settings.
Claims20
A method for setting exposure of video cameras, the method comprising:
- capturing images with the video cameras;
- identifying bright areas in the captured images;
- calculating exposure settings from the captured images excluding the bright areas in the captured images;
- and
- adjusting camera control parameters based on the calculated exposure settings;
- and
- wherein the captured images are individually analyzed to determine the bright areas in each captured image, the bright areas being excluded from the exposure settings calculations if the bright areas in the captured image are less than a predetermined percentage of the captured image.
A method for setting exposure of video cameras, the method comprising:
- capturing images with the video cameras;
- identifying bright areas in the captured images;
- calculating exposure settings from the captured images excluding the bright areas in the captured images;
- and
- adjusting camera control parameters based on the calculated exposure settings;
- and
- wherein the captured images are individually analyzed to determine the bright areas in each captured image, the bright areas being excluded from the exposure settings calculations if the bright areas in the captured image are less than 15 percent of the captured image.
A method for setting exposure of video cameras, the method comprising:
- capturing images with the video cameras;
- identifying bright areas in the captured images;
- calculating exposure settings from the captured images excluding the bright areas in the captured images;
- and
- adjusting camera control parameters based on the calculated exposure settings;
- and
- wherein the bright areas are excluded from the exposure settings calculations if a brightness threshold is exceeded, the brightness threshold being greater than 50% of the full sampling range.
A video camera comprising:
- an imaging sensor that captures images;
- a signal processor that identifies bright areas in the captured images and calculates exposure settings from the captured images excluding the bright areas in the captured images;
- and
- a processing unit that adjusts camera control parameters based on the calculated exposure settings;
- and
- wherein the captured images are individually analyzed to determine the bright areas in each captured image, the bright areas being excluded from the exposure settings calculations if the bright areas in the captured image are less than 15 percent of the captured image.
A video camera comprising:
- an imaging sensor that captures images;
- a signal processor that identifies bright areas in the captured images and calculates exposure settings from the captured images excluding the bright areas in the captured images;
- and
- a processing unit that adjusts camera control parameters based on the calculated exposure settings;
- and
- wherein the bright areas are excluded from the exposure settings calculations if a brightness threshold is exceeded, the brightness threshold being greater than 50% of the full sampling range.
Dependencies are inferred from the claim text.