Dynamic compensation of display backlight by adaptively adjusting a scaling factor based on motion
First Claim
1. A video adjustment system for processing video information, comprising:
- a controller which provides a power level value;
a motion analyzer which determines a motion level metric of the video information based on at least one motion parameter, wherein said motion level metric is indicative of a relative level of motion; and
an adjustment module which combines a factor of said power level value and said motion level metric with an initial dynamic light scaling factor to provide an adjusted dynamic light scaling factor.
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Abstract
A video adjustment system for processing video information is disclosed which includes a motion analyzer and an adjustment module. The motion analyzer determines a motion level metric of the video information based on at least one motion parameter. The adjustment adjusts an initial dynamic light scaling factor to provide an adjusted dynamic light scaling factor based on the motion level. The dynamic light scaling factor may be used for luminance compensation and backlight display scaling. The motion level may be based on any type of motion information, such as motion vector information or information indicating a scene change. A distortion module may perform a distortion evaluation of the video information for calculating the initial scaling factor. Alternatively, the distortion module may include a memory which stores predetermined scaling factors based on statistical distortion level characterization.
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Citations
21 Claims
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1. A video adjustment system for processing video information, comprising:
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a controller which provides a power level value; a motion analyzer which determines a motion level metric of the video information based on at least one motion parameter, wherein said motion level metric is indicative of a relative level of motion; and an adjustment module which combines a factor of said power level value and said motion level metric with an initial dynamic light scaling factor to provide an adjusted dynamic light scaling factor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 21)
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8. An electronic video device, comprising:
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a controller which provides a power level value; a video processing system which provides motion level information associated with video information, wherein said motion level information indicates a relative amount of motion; a video adjustment system which determines a dynamic light scaling factor based on a target distortion metric, said motion level information and said power level value, wherein said video adjustment system uses said target distortion metric to determine an initial dynamic light scaling factor, and adjusts said dynamic light scaling factor by combining a factor of said power level value and said motion level information with said initial dynamic light scaling factor; and a display system which displays adjusted video information which is adjusted based on said dynamic light scaling factor. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of processing video information, comprising:
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determining available power and providing a power level value; determining a motion level of the video information indicative of the relative amount of motion and providing a motion metric; and combining an initial dynamic light scaling factor with a factor of said power level value and said motion level metric to provide an adjusted dynamic light scaling factor. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification