Selective smoothing including bleed-through reduction
AssigneeHewlett-Packard Development Company, L.P.
InventorRon P. Maurer
Life of this patent
Estimating the term…
Abstract
A group of pixels of a digital image is processed to reduce bleed-through. The processing includes generating an upper bound for each pixel of the group; and taking a weighted average of the upper bound and original pixel intensity for each pixel of the group.
Claims18
A method of reducing bleed-through in a scanned image, the scanned image including a group of pixels, the method comprising:
- generating an upper bound for each pixel of the group;
- and
- taking a weighted average of the upper bound and original pixel intensity for each pixel of the group.
A method of processing a pixel of a digital image, the method comprising:
- generating a smoothed pixel intensity with respect to a local pixel neighborhood;
- and
- selectively using the smoothed intensity to modify original pixel intensity to help preserve a certain feature of the digital image.
A digital imaging system comprising:
- a capture device for generating a digital image;
- and
- a processor for performing bleed-through reduction on a plurality of pixels of the digital image, for each pixel the processor generating an upper bound for each pixel of the group, and taking a weighted average of the upper bound and original pixel intensity for each pixel of the group.
Apparatus for performing bleed-through reduction on a plurality of pixels of a digital image, the apparatus comprising a processor for processing the pixels, for each pixel the processing including generating an upper bound for each pixel of the group, and taking a weighted average of the upper bound and original pixel intensity for each pixel of the group.
An article for causing a processor to perform bleed-through reduction on a pixel of a digital image, the article comprising computer memory encoded with a program for instructing the processor to process the pixel by generating an upper bound for each pixel of the group, and taking a weighted average of the upper bound and original pixel intensity for each pixel of the group.
Dependencies are inferred from the claim text.