METHOD AND APPARATUS FOR SELECTING MACROBLOCK QUANTIZATION IN A VIDEO ENCODER

Title:

METHOD AND APPARATUS FOR SELECTING MACROBLOCK QUANTIZATION IN A VIDEO ENCODER

Document Type and Number:

WIPO Patent Application WO2003061265

Kind Code:

A3

Abstract:

A method and corresponding apparatus for selecting a sequence of quantization parameter values in a video encoder, the video encoder being arranged to encode a video frame as a sequence of n macroblocks and to assign a quantization parameter value for each macroblock of the video frame. The method includes steps (23 24 25) in which quantization parameter values assigned to at least a subset of said sequence of n macroblocks are optimized in such a way as to minimize a cost associated with their encoding.

Inventors:

OKTEM LEVENT

Application Number:

PCT/IB2002/005487

Publication Date:

March 25, 2004

Filing Date:

December 18, 2002

Export Citation:

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Assignee:

NOKIA CORP (FI)
NOKIA INC (US)

International Classes:

H04N19/124; G06T9/00; H03M13/41; H04N19/167; H04N19/176; (IPC1-7): H04N7/12

Foreign References:

US6043844A	2000-03-28
US5929916A	1999-07-27
US6205174B1	2001-03-20

Other References: