Methods and Systems for Ambient-Adaptive Image Display
First Claim
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1. A method for enhancing image display with ambient illumination input, said method comprising:
- a) determining an ambient illumination condition near a display device;
b) determining an image content characteristic for an input image to be displayed;
c) calculating a preliminary backlight selection based on said image content characteristic;
d) determining a tone scale process to compensate said input image based on said backlight selection; and
e) modifying said preliminary backlight selection based on said ambient illumination condition thereby creating a modified backlight selection.
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Abstract
Aspects of the present invention comprise systems and methods for determining image content characteristics, determining ambient illumination conditions, selecting an appropriate backlight level based on the image content characteristics and the ambient illumination conditions and selecting a tone scale curve for image enhancement wherein the tone scale curve is intended to enhance the image for display under the ambient illumination conditions using the selected backlight level.
106 Citations
20 Claims
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1. A method for enhancing image display with ambient illumination input, said method comprising:
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a) determining an ambient illumination condition near a display device; b) determining an image content characteristic for an input image to be displayed; c) calculating a preliminary backlight selection based on said image content characteristic; d) determining a tone scale process to compensate said input image based on said backlight selection; and e) modifying said preliminary backlight selection based on said ambient illumination condition thereby creating a modified backlight selection. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for enhancing image display with ambient illumination input, said method comprising:
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a) determining an ambient illumination condition near a display device; b) determining an image content characteristic for an input image to be displayed; c) calculating a backlight selection based on said ambient illumination condition and said image content characteristic; d) determining a tone scale process to compensate said input image based on said backlight selection, said ambient illumination condition and said image content characteristic; and e) applying said tone scale process to said input image thereby creating an enhanced image. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for enhancing image display with ambient illumination input, said method comprising:
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a) determining an ambient illumination condition near a display device; b) determining an image content characteristic for an input image to be displayed; c) selecting a backlight illumination level based on said ambient illumination condition and said image content characteristic; d) if said ambient illumination condition indicates a low ambient illumination condition; i) if said image content characteristic indicates a dim image, (1) selecting a dim image/low ambient tone scale with contrast matching; ii) if said image content characteristic indicates a mid-brightness image, (1) selecting a mid image/low ambient tone scale that employs a near lightness match with increased lightness; iii) if said image content characteristic indicates a bright image, (1) selecting a bright image/low ambient tone scale that employs lightness matching; e) if said ambient illumination condition indicates a mid ambient illumination condition; i) selecting a mid ambient tone scale that employs lightness matching; f) if said ambient illumination condition indicates a bright ambient illumination condition; i) if said image content indicates a dim image, (1) selecting a dim image/bright ambient tone scale that employs lightness matching; ii) if said image content indicates a mid image, (1) selecting a mid image/bright ambient tone scale that employs a near lightness match with decreased lightness; and iii) if said image content indicates a bright image, (1) selecting a bright image/bright ambient tone scale that employs contrast matching; - View Dependent Claims (18, 19, 20)
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Specification