Open AccessAnalysis of the spatial layer discrete cosine transform coefficient distribution and its application to rate model for H.264/SVC encoder
Author(s) -
Lee SzuWei
Publication year - 2014
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2013.0173
Subject(s) - discrete cosine transform , encoder , computer science , coding (social sciences) , algorithm , encoding (memory) , scalability , layer (electronics) , artificial intelligence , mathematics , image (mathematics) , statistics , database , operating system , chemistry , organic chemistry
Knowledge of the discrete cosine transform coefficient distribution (DCT‐DIST) is important for the encoder design. For example, rate control relies on this knowledge to estimate a possible bit rate and then decide proper coding parameters before the actual encoding task is performed. Therefore the rate control performance is fairly dependent on how accurately the DCT‐DIST is modelled. The spatial enhancement layer (SL) DCT‐DIST for H.264 scalable video coding (SVC) is studied in this Letter. SL DCT‐DIST knowledge is furthermore used to derive a novel rate model. Our results can help design a proper rate control module for the H.264/SVC encoder.