Paper Info
Title
Accounting for quantization noise in online correlation noise estimation for Distributed Video Coding.
Abstract
In Distributed Video Coding (DVC), compression is achieved by exploiting correlation between frames at the decoder, instead of at the encoder. More specifically, the decoder uses already decoded frames to generate side information Y for each Wyner-Ziv frame X, and corrects errors in Y using error correcting bits received from the encoder. For efficient use of these bits, the decoder needs information about the correlation between X available at the encoder and Y at the decoder. While several techniques for online estimation of correlation noise X - Y have been proposed, the quantization noise in Y has not been taken into account. As a solution, in this paper, we calculate the quantization noise of intra frames at the encoder and use this information at the decoder to improve the accuracy of the correlation noise estimation. Results indicate averageWyner-Ziv bit rate reductions up to 19.5% (Bjøntegaard delta) for coarse quantization.
Year
DOI
Venue
2009
10.1109/PCS.2009.5167360
Chicago, IL
Keywords
Field
DocType
side information y,correlation noise estimation,coarse quantization,efficient use,online correlation noise estimation,video coding,correlation noise x,wyner-ziv frame x,online estimation,quantization noise,averagewyner-ziv bit rate reduction,motion estimation,wireless sensor networks,error correction,statistical distribution,pixel,encoding,video compression,statistical distributions,quantization,correlation,video encoder,estimation theory,decoding,noise,data compression
Computer vision,Computer science,Theoretical computer science,Error detection and correction,Artificial intelligence,Soft-decision decoder,Encoder,Motion estimation,Decoding methods,Quantization (signal processing),Data compression,Video decoder
Conference
ISBN
Citations 
PageRank 
978-1-4244-4594-3
12
0.63
References 
Authors
6
6
Name
Order
Citations
PageRank
Jürgen Slowack113512.74
Stefaan Mys21158.91
Jozef Skorupa3947.75
Peter Lambert453867.24
Rik Van de Walle52040238.28
C. Grecos633348.30