Selective thickening of dark features by biased sharpening filters
AssigneeHewlett-Packard Development Company, L.P.
InventorRon P. Maurer
Life of this patent
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Abstract
Processing of a pixel of a digital image includes sharpening a digital image, while boldening dark features in the digital image as a non-decreasing function of local contrast.
Claims12
A method of processing a digital image, the method comprising sharpening the digital image, while boldening dark features in the digital image as a non-decreasing function of local contrast.
An image processing system comprising:
- scanning means generating a digital image;
- and
- a processor for sharpening the digital image, while boldening dark features in the digital image as a non-decreasing function of local contrast.
Apparatus for processing a digital image, the apparatus comprising a processor for sharpening the digital image, while boldening dark features in the digital image as a non-decreasing function of local contrast.
An article for instructing a processor to process a digital image, the article comprising computer memory encoded with a program for causing the processor to sharpen the digital image, while boldening dark features in the digital image as a non-decreasing function of local contrast.
Dependencies are inferred from the claim text.