Image processing apparatus capable of image editing

Details Image processing apparatus capable of image editing Image processing apparatus capable of image editing

1990-05-04

1993-08-24

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358448, 358462, H04N 121

Patent

active

052393836

ABSTRACT:
An image processing apparatus is provided with an input circuit for inputting a plurality of multilevel signals, each corresponding to a respective one of a plurality of pixels. An emphasizing circuit emphasizes a high frequency component of one of the multilevel image signals by using the multilevel image signals of a plurality of pixels and outputs the emphasized multilevel image signal. A discriminator discriminates a dot area of an image represented by the one multilevel signal input by the input circuit, by using the multilevel image signals of the plurality of pixels whose high frequency component is emphasized by the emphasizing circuit. The number of pixels used by the discriminator is larger than the number of pixels used by the emphasizing circuit.

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patent: 5014124 (1991-05-01), Fujisawa
patent: 5016118 (1991-05-01), Nannichi

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