Color image processor

Details Color image processor Color image processor

1999-03-16

2001-11-27

Grant, II, Jerome (Department: 2722)

Facsimile and static presentation processing

Facsimile

Recording apparatus

C358S518000

Reexamination Certificate

active

06323959

ABSTRACT:

This application is based on an application No. 10-69002/1998 filed in Japan, the content of which is incorporated hereinto by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a color image processor which processes and supplies digital color image data.
2. Description of Prior Art
In an image reader in a digital copying machine or the like, a document image is read as digital image data of red, green and blue. Then, the read digital color image data are subjected to various processing such as magnification change, automatic color decision, or discrimination of a specified color document, and the processed data are supplied, for example, for image forming.
However, prior art image processors have problems. For example, when image discrimination is performed for automatic color decision or discrimination of a specified color document based on the read image data, a pixel is erroneously as a color data even when a monochromatic document is read. Then, discrimination was bad and a ratio of correct discrimination is not sufficient.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an image processor which can process image date with good precision.
In one aspect of the present invention, an image reader comprises a color image sensor which outputs image signals in correspondence to a plurality of colors, and an optical system which focuses an image optically onto the color image sensor. A color aberration corrector corrects image signals received from the color image sensor to cancel a displacement of focal point of the optical images of the colors caused by color aberration of the optical system. Then, various image data processing is performed on the image data after the color aberration correction in order to improve the precision of image processing on a color document image. For example, the image data comprises a magnification changer which changes a magnification power of the image signals corrected by the color aberration corrector. In a different way, the image reader comprises a color decider which decides, based on the image signals corrected by the color aberration corrector, whether the image is a color image or not. In a further way, the image reader comprises an image discriminator which decides, based on image signals corrected by said color aberration corrector, whether the image is a specified image or not.
An advantage of the present invention is that various image data processing can be performed with higher precision of image discrimination by using color aberration correction.


REFERENCES:
patent: 3982825 (1976-09-01), Mitchell
patent: 5376993 (1994-12-01), Kubota
patent: 5838455 (1998-11-01), Imaizumi et al.
patent: 5850293 (1998-12-01), Suzuki et al.
patent: 5867285 (1999-02-01), Hirota et al.
patent: 6101020 (2000-08-01), Ori
patent: 6147816 (2000-11-01), Ori
patent: 01077386A (1989-03-01), None

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