METHOD AND SYSTEM FOR DISPLAY CHARACTERIZATION AND CONTENT CALIBRATION
First Claim
1. A method for content display calibration, comprisingdetermining an average power level (APL) of said content;
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Abstract
A method and system for characterization of a display for facilitating the calibration of the display values of input content in response to dynamic behavior caused by changes in average power (picture) level of the input content include determining a level of average power (APL) in the input content and applying a transform to the input content to determine display values for the input content based on the determined APL of the input content. The transform, in one embodiment of the invention is based on a display characterization which includes a measurement of at least one APL on the display. In one embodiment of the present invention, the transform is a four dimensional look-up table that maps input content color values to respective human visual system values for different average power levels.
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Citations
23 Claims
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1. A method for content display calibration, comprising
determining an average power level (APL) of said content; - and
applying a transform to said content to determine display values for said content based on the determined APL of said content, said transform based on a display characterization which includes a measurement of at least one APL on the display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for characterizing a display to adapt to changes in average power level (APL) of input content, comprising:
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measuring a color component response of said display for at least one average power level (APL); generating a look-up table for the at least one APL, each look-up table mapping respective color component response versus human visual tristimulus Values for the at least one APL; and determining a display characterization transform based on APL using said look-up tables. - View Dependent Claims (11, 12, 13, 14)
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15. A display system, comprising:
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a screen configured to display input content at an average power level (APL); a storage means configured to store programs and at least one transform based on measured average power levels; a sensor configured to determine average power levels of said input content; and a processor configured to be responsive to the sensor and to execute the programs in said storage means for applying said transform to determine display values for said input content based upon the determined APL of said input content. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification