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US 2010/0074548 A1Published application
Image sharpening technique
AssigneeSharp Laboratories of America, Inc.
InventorsHao Pan, Yeping Su
Life of this patent
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Abstract
A sharpening technique for digital images for presentation on a display. The technique may include an upscaling process, a noise reduction process, and a sharpening process. The technique may further use a single buffer for the upscaling, noise reduction, and sharpening.
Claims13
A method for modifying an image from a first scale to a modified image having a different scale:
- (a) receiving said image having a first sharpness at said first scale;
- (b) filtering said image with an image filter to results in the creation of a first channel and a second channel, wherein said first channel includes primarily texture information and said second channel includes primarily edge and flat region information;
- (c) filtering said first channel to attenuate higher frequency content of said image in said first channel;
- (d) filtering said second channel to sharpen said image in said second channel;
- (e) upscaling said image from said first scale to said second scale, wherein said upscaling, said filtering of said second channel, and said filtering of said first channel are based upon a plurality of the same pixels of said image from the same buffer;
- (f) combining said first channel, said second channel, and said image upscaled to said second scale to form said modified image having said different scale.
3 more elements
A method for modifying an image from a first scale to a modified image having a different scale:
- (a) receiving said image having a first sharpness at said first scale;
- (b) upscaling said image from said first scale to said second scale;
- (c) filtering said image with an image filter to results in the creation of a first channel and a second channel further based said upscaled said image and said image, wherein said first channel includes primarily texture information and said second channel includes primarily edge and flat region information;
- (d) combining said first channel and said second channel to form said modified image having said different scale.
1 more element
Dependencies are inferred from the claim text.