Non-casual error diffusion method and apparatus

Details Non-casual error diffusion method and apparatus Non-casual error diffusion method and apparatus

1998-03-05

2000-09-19

Rogers, Scott

Facsimile and static presentation processing

Static presentation processing

Attribute control

358456, 382252, H04N 1405

Patent

active

061220701

ABSTRACT:
A non-causal error diffusion technique that is capable of gray image signals into binary image signals to prevent the occurrence of visible correlated patterns and/or artifacts. In the non-causal error diffusion method, transformation errors produced when great gray level sets of image signals for a certain pixel are transformed into reduced gray level sets of image signals are reflected to the image signals for pixels at non-causal locations with respect to the certain pixel.

REFERENCES:
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patent: 5467201 (1995-11-01), Fan
patent: 5521989 (1996-05-01), Fan
patent: 5668638 (1997-09-01), Knox et al.
patent: 5870503 (1999-02-01), Kumashiro
IEEE Catalog No.: 97CB36144. Iterative error diffusion halftoning using a zero phase error filter, Authors: Makur, A.; Kumar, A. This paper appeared in: Image Processing, 1997, Proceding., International Conference on pp.: 795-798 vol. 1.

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