Method of improving image quality

Details Method of improving image quality Method of improving image quality

2004-06-28

2009-10-13

Dang, Duy M (Department: 2624)

Image analysis

Color image processing

C382S167000, C382S254000

Reexamination Certificate

active

07602967

ABSTRACT:
A method of improving image quality of a reproduced image, the method including converting red, green, and blue color data of a subject pixel into color data having brightness and chroma components; identifying the subject pixel as a background pixes, a picture pixel, or a text pixel according to the brightness and the chroma components; storing history information of the subject pixel, wherein the history information includes the number of continued background pixels or continued picture pixels before the subject pixel; detecting features of the subject pixel according to the history information; labeling the subject pixel to be included in one of a text area, a background area, and a picture area according to a state of a previously labeled adjacent pixel and the detected features of the subject pixel; and processing the subject pixel according to the area to which the subject pixel belongs.

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U.S. Appl. No. 10/370,110, filed Feb. 21, 2003, Sung-hyun Lim, Samsung Electronics Co., Ltd.
European Search Report dated Apr. 17, 2007, issued in corresponding European Patent Application No. 03250196.7.

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