Method for object edge detection in macroblock and method...

Details Method for object edge detection in macroblock and method... Method for object edge detection in macroblock and method...

2005-07-22

2010-11-02

Rao, Andy S (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240040, C375S240050

Reexamination Certificate

active

07826533

ABSTRACT:
A method for object edge detection in a macroblock and a method for deciding quantization scaling factor are disclosed. This method calculates and compares the pixel means and means of absolutely difference of a plurality of pixel blocks in a macroblock to achieve the purpose of detecting if there is an object edge or flat area in a macroblock. In the meantime, the image structure of macroblock is analyzed and classified and its related messages are used for bit rate control, such that the visual effect of the compressed image can be appropriately enhanced.

REFERENCES:
patent: 6741655 (2004-05-01), Chang et al.
patent: 6782135 (2004-08-01), Viscito et al.

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