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US 2004/0165115 A9Published application
Bit-depth extension with models of equivalent input visual noise
AssigneeSharp Laboratories of America, Inc.
InventorScott James Daly
Life of this patent
Estimating the term…
Abstract
A method for extending bit-depth of display systems. The method includes creating pseudo-random noise from human visual system noise. When applied to the image data, the noise causes spatiotemporal dithering. The pseudo-random noise is combined with image data, producing noise-compensated image data. The noise-compensated image data is them quantized.
Claims23
A method for extending bit-depth of display systems, comprising the steps of:
- creating pseudo-random noise from human visual system noise, wherein the noise causes spatiotemporal dithering;
- combining the pseudo-random noise with image data, thereby producing noise-compensated image data;
- and
- quantizing the noise-compensated image data.
1 more element
A method of storing dither frames, the method comprising:
- generating a three-dimensional dither array;
- and
- mapping the three-dimensional dither array into memory.
A method of applying dither to image data, the method comprising:
- applying dither frames to frames of image data, wherein the dither frames are applied spatially in a sequential manner beginning at index positions such that the dither frames are incremented between index positions;
- and
- applying dither frames to frames of image data temporally.
Dependencies are inferred from the claim text.