Method of estimating a quantization parameter

Details Method of estimating a quantization parameter Method of estimating a quantization parameter

2007-05-11

2010-11-30

Mehta, Bhavesh M (Department: 2624)

Image analysis

Image compression or coding

Quantization

C375S240040

Reexamination Certificate

active

07844124

ABSTRACT:
A method of estimating a quantization parameter is provided. The method is applied to a de-blocking filter. The de-blocking filter de-blocks a decoded block-based image according to the quantization parameter, and the block-based image is coded and decoded in units of macroblocks. The method comprises calculating blocking degrees of a number of block edges corresponding to the macroblocks; and estimating the quantization parameter according to a sum of the blocking degrees.

REFERENCES:
patent: 5440344 (1995-08-01), Asamura et al.
patent: 5781237 (1998-07-01), Fukuda
patent: 5818529 (1998-10-01), Asamura et al.
patent: 5999657 (1999-12-01), Yasuhiko
patent: 6415057 (2002-07-01), Suzuki et al.

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