Image coding and decoding method and apparatus considering...

Details Image coding and decoding method and apparatus considering... Image coding and decoding method and apparatus considering...

2007-10-02

2007-10-02

Rao, Anand (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240050, C375S240060

Reexamination Certificate

active

10336779

ABSTRACT:
An image coding method and apparatus considering human visual characteristics are provided. The image coding method comprises (a) modeling image quality distribution of an input image in units of scenes such that the quality of an image input in units of scenes is gradually lowered from a region of interest to a background region, (b) determining a quantization parameter of each region constituting one scene according to the result of modeling of image quality distribution, (c) quantizing image data in accordance with the quantization parameter, and (d) coding entropy of the quantized image data.

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Korean Office Action, dated Apr. 25, 2005 and English translation.
Notice to Submit Response issued by the Korean Patent Office on Apr. 26, 2004 in corresponding application 10-2002-0000602 w/ English translator.
Japanese Office Action dated Feb. 1, 2006.

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