Video processing of a quantized base layer and one or more...

Details Video processing of a quantized base layer and one or more... Video processing of a quantized base layer and one or more...

2005-08-16

2005-08-16

Lee, Young (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

06931060

ABSTRACT:
In an encoding process, video data are represented as a bitstream of a quantized base layer and one or more enhancement layers, which capture the difference between a quantized base video picture and an original unquantized input video picture. Due to bandwidth constraints on a communication channel, it may be unfeasible to transmit all enhancement layers. During the encoding process, the enhancement layer data may be adjusted to give transmission priority to information in the enhancement layers that is visually important. Following transmission, the adjustment may be undone during the decoding process.

REFERENCES:
patent: 5818531 (1998-10-01), Yamaguchi et al.
patent: 6317462 (2001-11-01), Boyce
Steinmetz and Nahrstedt, Chap. 6, 4.2 Video Compression (http://www.cs.sfu.ca/undergrad/CourseMaterials/CMPT479/material
otes/Chap4 -printed Aug. 30, 2000).
Information Technology -Generic Coding of Audio-Visual Objects: Visual ISO/IEC 14496-2/Amd X; ISO/IECJTC1/SC29/WG11;N2815; Vancouver, Jul. 1999 (Working draft 1.0).
FGS Verification Model; ISO/IEC JTC1/SC29/WG11;N2816; Vancouver, Jul. 1999 (Version 1.0).
Information Technology -Generic Coding of Audio-Visual Objects: Visual ISO/IEC 14496-2/Amd X; ISO/IEC JTC1/SC29/WG11;N2925; Melbourne, Oct. 1999 (Working draft 2.0).
FGS Verification Model; ISO/IEC JTC1/SC29/WG11; N2926; Melbourne, Oct. 19999 (Version 2.0).

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