Edge smoothing filter for character recognition

Details Edge smoothing filter for character recognition Edge smoothing filter for character recognition

2004-02-17

2009-08-04

Kassa, Yosef (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C382S167000, C382S260000, C382S266000, C358S003260, C358S003270, C358S463000

Reexamination Certificate

active

07570835

ABSTRACT:
A system and method for correcting defects in a black white image. An edge smoothing filter is disclosed that comprises: a system for selecting a block of pixels comprising one center pixel and eight exterior pixels; and an algorithm that examines the block of pixels, wherein the algorithm overwrites the value of the center pixel if: all three pixels along a first edge share a first value; and all three pixels along an opposing edge share a second value that is opposite of the first value; and the two exterior pixels residing between the first and second edge share a common value.

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Prakash, U.S. Appl. No. 11/850,927, CHA920030036US2, Office Action Communication, Jul. 10, 2008, 10 pages.
Prakash, U.S. Appl. No. 11/850,927, CHA920030036US2, Office Action Communication, Dec. 15, 2008, 10 pages.

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