Image processing apparatus and method using dot patterns

Details Image processing apparatus and method using dot patterns Image processing apparatus and method using dot patterns

1997-08-29

2000-05-09

Rogers, Scott

Facsimile and static presentation processing

Static presentation processing

Attribute control

358502, 382269, G06K 1502, H04N 1409

Patent

active

060611456

ABSTRACT:
The present invention relates to an image processing method and an image processing apparatus, and an object thereof is to improve resolution and also suppress indention of contour, thereby improving image quality. In order to achieve the object in a case where multi-gradation image data is quantized to be converted into quantized pixel patterns, a smoothing portion of a quantized image is detected and a contour of the quantized image is corrected by interpolating pixels of the detected smoothing portion the quantized pixel pattern of the smoothing portion in the detected quantized image is replaced by a pixel pattern for smoothing stored in a memory.

REFERENCES:
patent: 4847641 (1989-07-01), Tung
patent: 5454052 (1995-09-01), Kojima
patent: 5721793 (1998-02-01), Ushida et al.
patent: 5875268 (1999-02-01), Miyake

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