Image processing apparatus and method with weighting of error da

Details Image processing apparatus and method with weighting of error da Image processing apparatus and method with weighting of error da

1995-01-18

1997-04-15

Vu, Kim

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358456, H04N 1405

Patent

active

056215428

ABSTRACT:
An image processing apparatus comprises an inputting unit for inputting image data, a processing unit for quantizing the image data, and a distributing unit for weighting error data which occurs at the time of the quantizing process and for distributing the error data to a plurality of image data, wherein the distributing unit sets a value of a round error which occurs by the weighting process to a value which lies within a range from 0 to less than 1.

REFERENCES:
patent: 4680645 (1987-07-01), Dispoto et al.
patent: 5201013 (1993-04-01), Kumagai
patent: 5307426 (1994-04-01), Kanno et al.
patent: 5530561 (1996-06-01), Shimazaki
R. Floyd and L. Steinberg, "An Adaptive Algorithm for Spatial Grey Scale", Society for Information Display 1975 Symposium Digest of Technical Papers (1975), pp. 36-37.

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