Image processing apparatus

Details Image processing apparatus Image processing apparatus

1997-04-10

1999-04-06

Coles, Edward L.

Image analysis

Image enhancement or restoration

382266, 382205, 382260, 358447, 358453, 358456, H04N 140

Patent

active

058928529

ABSTRACT:
An image processing apparatus includes a converter for reading out a manuscript image signal and converting the read-out signal to an electric signal. A signal processor executes signal processing for the electric signal, and an image generator generates an image in accordance with the processed signal. An outputting unit separates a character area and a photograph area of the manuscript from the read-out signal and outputs an area signal. A changing-over circuit changes over a filtering process in accordance with the area signal. A halftone processor executes in parallel a halftone process for the character area image and a halftone process for the photograph area image, and the changing-over circuit selectively changes over the halftone processing result for the character and the halftone processing result in accordance with the area signal.

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patent: 5473444 (1995-12-01), Sakamo et al.
patent: 5515180 (1996-05-01), Maeda

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