Paper Info
Title
Subband Decomposition for High-Resolution Color in HEVC and AVC 4:2:0 Video Coding Systems
Abstract
Summary form only given. High-resolution color video (in 4:4:4 format) is becoming increasingly important for screen content and graphics. We have developed a frame packing arrangement (FPA) scheme that enables transmission of 4:4:4 luma-chroma (YUV or YCoCg) content through conventional subsampled chroma (4:2:0) codecs as an approach for low-cost support of 4:4:4 content. We focus on the "band separation" method initially discussed in [1] and evaluate new scenarios with the 4:4:4 and 4:2:0 versions at similar compression levels. We use the HEVC HM12.0 reference software for evaluating the FPA scheme. We vary the luma QP for the main 4:2:0 representation from 10 to 34, keeping the QP for the main frame's chroma and auxiliary frame's luma and chroma (containing three-fourths of the 4:4:4 chroma data) at the same value as the luma QP. We then compare the final 4:4:4 chroma rate-distortion performance of band separation, direct frame packing, and native HM 4:4:4 encoding. We also show preliminary results for lifting-based band separation (with clipping), which eliminates the inherent rounding errors of other band separation filters and provides better rate-distortion performance. Fig. 1 provides an example for a typical case of the new results showing that both the "band separation" and "lifting-based band separation" approaches have much better performance than previously reported, and are significantly better than the earlier-developed "direct" frame packing approach. Although the rate-distortion performance is inferior to that of native HM 4:4:4 coding, the FPA scheme enables the use of existing 4:2:0 decoding hardware, thus allowing for considerable battery power savings in mobile devices. A more complete discussion and evaluation is available in [2].
Year
DOI
Venue
2014
10.1109/DCC.2014.61
Data Compression Conference
Keywords
Field
DocType
data compression,decoding,image colour analysis,video coding,AVC,FPA scheme,HEVC,HEVC HM12.0 reference software,band separation filters,battery power savings,chroma rate-distortion performance,conventional subsampled chroma codecs,decoding hardware,direct frame packing,frame packing arrangement,high-resolution color video,lifting-based band separation,luma QP,luma-chroma content,native HM encoding,rate-distortion performance,subband decomposition,video coding systems,4:2:0 video,AVC,HEVC,screen coding,video coding,video compression
Computer vision,Block-matching algorithm,Coding tree unit,Computer science,Context-adaptive variable-length coding,Motion compensation,Multiview Video Coding,Artificial intelligence,Data compression,Video compression picture types,Context-adaptive binary arithmetic coding
Conference
ISSN
Citations 
PageRank 
1068-0314
0
0.34
References 
Authors
2
6
Name
Order
Citations
PageRank
Srinath Reddy100.68
Sandeep Kanumuri2768.07
Yongjun Wu320.96
Shyam Sadhwani420.96
Gary J. Sullivan53823349.88
Henrique Malvar6690105.66