Method and apparatus for bit resolution extension

Details Method and apparatus for bit resolution extension Method and apparatus for bit resolution extension

2006-09-29

2010-06-08

Ahmed, Samir A (Department: 2624)

Image analysis

Image enhancement or restoration

C382S299000, C382S274000

Reexamination Certificate

active

07734109

ABSTRACT:
A bit resolution-extension method is provided. The bit resolution-extension method includes acquiring the shortest distance from a central pixel to a positive contour and the shortest distance from the central pixel to a negative contour in a filtering region which scans the positive contour comprising large pixels of a fixed value and the negative contour comprising small pixels of a fixed value, based on a value of the central pixel, generating an extension bit of the central pixel by interpolating the shortest distance from the central pixel to the positive contour and the shortest distance from the central pixel to the negative contour, and adding the extension bit as a lower bit of the central pixel.

REFERENCES:
patent: 5787208 (1998-07-01), Oh et al.
patent: 09-051421 (1997-02-01), None
patent: 2002-057900 (2002-02-01), None
patent: 10-2004-0088518 (2004-10-01), None
patent: 10-2004-0094606 (2004-11-01), None

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