Image processing method and apparatus

Details Image processing method and apparatus Image processing method and apparatus

1995-06-07

1997-12-16

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Thermal

347183, B41J 236

Patent

active

056977123

ABSTRACT:
A method and apparatus proecsses a dot image formed of a plurality dots, each dot having a density level. In the method and appratus, a dot pattern is extracted from the dot image, which dot pattern being formed of an observation dot and dots surrounding the observation dot, it is tdetermining, based on comparison between the extracted dot pattern and predetermined reference patterns, whether or not the observation dot in the dot pattern is either a dropout dot or a projection dot, a density level of the observation dot is changed to a first density level corresponding to the dropout dot when it is determined that the observation dot is the dropout dot, and a density level of the observation dot is changed to a second density level corresponding to the projection dot when it is determined that the observation dot is the projection dot.

REFERENCES:
patent: 5210545 (1993-05-01), Tomita
patent: 5241324 (1993-08-01), Tamura
patent: 5396584 (1995-03-01), Lee et al.

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