Image processing apparatus and method

Details Image processing apparatus and method Image processing apparatus and method

2006-05-30

2006-05-30

Lee, Thomas D. (Department: 2624)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S002100, C358S003230, C358S521000, C382S162000

Reexamination Certificate

active

07054032

ABSTRACT:
To provide an image processing apparatus capable of making an MTF correction for each image at a low cost. The image processing apparatus according to the present invention performs a spatial filtering process by selecting a filter having an appropriate spatial frequency characteristic for each area according to an image area determination signal and a color gamut determination signal for an input color image signal. Furthermore, an image signal is divided into blocks for each image area, and an appropriate spatial filter is selected for each block depending on the ratio of blocks of each image area to the entire block. Thus, an appropriate filter can be selected depending on the characteristic of an image, and an appropriate MTF correction can be made without largely changing a conventional configuration.

REFERENCES:
patent: 5341227 (1994-08-01), Kumashiro
patent: 5809216 (1998-09-01), Ng
patent: 5999279 (1999-12-01), Kouzaki et al.

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