07263125 is referenced by 58 patents and cites 9 patents.

A method and device for coding of digital video sequence, wherein an indication of quantization parameter (QP) is provided in the encoded bit-stream for decoding purposes. The QP related information is indicated by introducing a sequence level quantization parameter value SQP. More specifically, instead of coding the absolute values of picture/slice QPs, an indication of the difference ΔQP between the sequence level quantization parameter SQP and the picture/slice QP is provided. This eliminates the need to transmit a full QP for every picture/slice, and enables a statistically smaller difference value to be transmitted, thus providing a reduction in transmission bit-rate. The difference value is subsequently used in a corresponding decoder to reconstruct the picture/slice QP.

Title
Method and device for indicating quantizer parameters in a video coding system
Application Number
10/421629
Publication Number
7263125 (B2)
Application Date
April 23, 2003
Publication Date
August 28, 2007
Inventor
Jani Lainema
Irving
TX, US
Agent
Ware Fressola Van Der Sluys & Adolphson
Assignee
Nokia Corporation
FI
IPC
G06K 9/36
H04N 7/12
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