Paper Info
Title
Structural based side information creation with improved matching criteria for Wyner-Ziv video coding
Abstract
The Wyner-Ziv video coding (WZVC) efficiency is highly dependent on the quality of the side information (SI) created at the decoder, typically through motion compensated frame interpolation (MCFI) techniques. Since the decoder only has available some reference decoded frames, SI creation turns out to be a difficult problem in WZVC. In most the MCFI techniques available, the matching criterion used for motion estimation only takes into account the (mean of absolute) pixel differences within a block which is limiting for some content types. This paper proposes a structural based SI creation approach with improved matching criteria combining local image features, obtained from the histogram of oriented gradients (HOG), with a boundary continuity criterion and the typical pixel differences criterion. With the structural based SI creation, the motion estimation process becomes more robust, e.g. to illumination changes, thus improving the SI quality (up to 0.4 dB) and reducing the bitrate (up to 6 % in terms of the Bjontegaard metric) regarding a state-of-the-art MCFI solution.
Year
DOI
Venue
2012
10.1109/WIAMIS.2012.6226756
Image Analysis for Multimedia Interactive Services
Keywords
Field
DocType
feature extraction,image matching,interpolation,motion compensation,video coding,HOG,MCFI techniques,WZVC,Wyner-Ziv video coding,boundary continuity criterion,histogram of oriented gradients,local image features,matching criteria,motion compensated frame interpolation techniques,pixel differences criterion,side information quality,structural based SI creation approach,structural based side information creation
Computer vision,Pattern recognition,Computer science,Motion compensation,Interpolation,Feature extraction,Histogram of oriented gradients,Motion interpolation,Pixel,Artificial intelligence,Motion estimation,Decoding methods
Conference
ISSN
ISBN
Citations 
2158-5873 E-ISBN : 978-1-4673-0789-5
978-1-4673-0789-5
0
PageRank 
References 
Authors
0.34
8
3
Name
Order
Citations
PageRank
Catarina Brites156341.30
João Ascenso274894.30
Fernando Pereira3177172124.79