Methods and apparatus for minimizing requantization error

Details Methods and apparatus for minimizing requantization error Methods and apparatus for minimizing requantization error

2007-10-30

2007-10-30

Do, Anh Hong (Department: 2624)

Image analysis

Image compression or coding

Quantization

C382S248000, C382S250000

Reexamination Certificate

active

10626485

ABSTRACT:
According to the present invention, methods and apparatus for performing error minimizing requantization are provided. Quantized coefficients associated with a bitstream are received. It is determined whether the quantized coefficients are associated with an inter macroblock or an intra macroblock. Inter macroblock and intra macroblock formulas minimizing requantization error are applied to determine requantized coefficients.

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Overview of MPEG-2 Test Model 5, TM5 Overview, retrieved from website www.mpeg.org/MPEG/MSSG/tm5/overview.html 5 pages.
ISO/IEC 13818-2: 1995, Recommendation ITU-T H.262 (1995) 243 pages.

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