Paper Info
Title
Improved pixel-based rate allocation for pixel-domain distributed video coders without feedback channel
Abstract
In some video coding applications, it is desirable to reduce the complexity of the video encoder at the expense of a more complex decoder. Distributed Video (DV) Coding is a new paradigm that aims at achieving this. To allocate a proper number of bits to each frame, most DV coding algorithms use a feedback channel (FBC). However, in some cases, a FBC does not exist. In this paper, we therefore propose a rate allocation (RA) algorithm for pixel-domain distributed video (PDDV) coders without FBC. Our algorithm estimates at the encoder the number of bits for every frame without significantly increasing the encoder complexity. For this calculation we consider each pixel of the frame individually, in contrast to our earlier work where the whole frame is treated jointly. Experimental results show that this pixel-based approach delivers better estimates of the adequate encoding rate than the frame-based approach. Compared to the PDDV coder with FBC, the PDDV coder without FBC has only a small loss in RD performance, especially at low rates.
Year
DOI
Venue
2007
10.1007/978-3-540-74607-2_60
ACIVS
Keywords
Field
DocType
algorithm estimate,pddv coder,video coding application,low rate,frame-based approach,dv coding algorithm,whole frame,feedback channel,encoder complexity,video encoder,video coders,adequate encoding rate,improved pixel-based rate allocation
Computer science,Turbo code,Real-time computing,Coding (social sciences),Residual frame,Artificial intelligence,Virtual channel,Computer vision,Algorithm,Communication channel,Pixel,Encoder,Encoding (memory)
Conference
Volume
ISSN
ISBN
4678
0302-9743
3-540-74606-4
Citations 
PageRank 
References 
8
0.53
5
Authors
5
Name
Order
Citations
PageRank
M. Morbee1896.31
Josep Prades-nebot21349.59
Antoni Roca31408.51
Aleksandra Pizurica41238102.29
Wilfried Philips51476124.85