Image forming apparatus and image forming method
First Claim
1. An image processing apparatus for subjecting an input image signal to an enlargement/reduction process on the basis of a predetermined enlargement/reduction magnification, the apparatus comprising:
- first discrimination means for generating a first discrimination signal by determining an attribute of each of at least one area obtained by dividing an input image on the basis of the input image signal;
second discrimination means for generating a second discrimination signal by determining an attribute of each of pixels on the basis of the input image signal and the first discrimination signal from the first discrimination means;
image enlargement/reduction means for subjecting the input image signal to the enlargement/reduction process on the basis of the enlargement/reduction magnification;
discrimination enlargement/reduction means for generating an enlarged/reduced discrimination signal by subjecting the second discrimination signal from the second discrimination means to the enlargement/reduction process on the basis of the enlargement/reduction magnification; and
image processing means for performing an image process for the enlarged/reduced image signal from the image enlargement/reduction means on the basis of the enlarged/reduced discrimination signal.
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Abstract
An input section performs a color conversion process, etc. for image data from a color scanner section. A discrimination section generates a discrimination signal representative of “character”, “non-character”, etc. on the basis of an image signal from the input section. A first processing section performs a filtering process, etc. for the image signal from the input section, and switches the method of such a process on the basis of the discrimination signal from the discrimination section. An enlargement/reduction section enlarges or reduces the discrimination signal from the discrimination section and the image signal from the first processing section. A second processing section subjects the enlarged/reduced image signal form the enlargement/reduction section to a black-added printing process, a gamma conversion process, etc., and switches the method of such a process on the basis of the enlarged/reduced discrimination signal from the enlargement/reduction section.
18 Citations
7 Claims
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1. An image processing apparatus for subjecting an input image signal to an enlargement/reduction process on the basis of a predetermined enlargement/reduction magnification, the apparatus comprising:
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first discrimination means for generating a first discrimination signal by determining an attribute of each of at least one area obtained by dividing an input image on the basis of the input image signal;
second discrimination means for generating a second discrimination signal by determining an attribute of each of pixels on the basis of the input image signal and the first discrimination signal from the first discrimination means;
image enlargement/reduction means for subjecting the input image signal to the enlargement/reduction process on the basis of the enlargement/reduction magnification;
discrimination enlargement/reduction means for generating an enlarged/reduced discrimination signal by subjecting the second discrimination signal from the second discrimination means to the enlargement/reduction process on the basis of the enlargement/reduction magnification; and
image processing means for performing an image process for the enlarged/reduced image signal from the image enlargement/reduction means on the basis of the enlarged/reduced discrimination signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification