DMCA
Spatially Scalable Video Coding For HEVC
| Citations: | 3 - 0 self |
BibTeX
@MISC{Shi_spatiallyscalable,
author = {Zhongbo Shi and Xiaoyan Sun and Senior Member and Feng Wu},
title = {Spatially Scalable Video Coding For HEVC},
year = {}
}
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Abstract
Abstract—Spatially scalable video coding (SSVC) provides an efficient way to transmit one video at different resolutions. Based on the emerging High Efficiency Video Coding (HEVC), we propose an SSVC scheme to support both single-loop (SL) and multiloop (ML) solutions by enabling different interlayer prediction mechanisms. Specifically, we employ two interlayer prediction modes: quadtree-based prediction mode (Q-mode) and learning-based prediction mode (L-mode). The Q-mode is investigated to exploit the interlayer redundancy based on the quadtree coding structure of HEVC. Due to the high correlation between layers, Q-mode utilizes the coded information from the base layer quadtree, including coding unit split, prediction unit partition, motion information, and partial texture information of transform unit, to predict the enhancement layer quadtree. By enabling Q-mode, we provide a basic SL solution for low complexity applications. Besides the correlation explored in Q-mode, we employ an extra L-mode to further improve the coding performance. In L-mode, the temporal-spatial correlation is exploited simultaneously by visual patch-based learning and mapping at pixel level. This helps us achieve more accurate prediction signals based on the coarse base layer reconstruction within an ML structure. Experimental results show the effectiveness of our SSVC scheme compared with the simulcast case and other HEVC-based SSVC schemes. Index Terms—High Efficiency Video Coding (HEVC), learningbased approach, scalable video coding (SVC).
Keyphrases
scalable video coding ssvc scheme high efficiency video coding transform unit base layer quadtree simulcast case quadtree coding structure prediction unit partition temporal-spatial correlation efficient way visual patch-based learning basic sl solution low complexity application interlayer prediction mode hevc-based ssvc scheme pixel level coding performance coarse base layer reconstruction high correlation learning-based prediction mode abstract spatially scalable video coding interlayer redundancy quadtree-based prediction mode ml structure different resolution different interlayer prediction mechanism enhancement layer quadtree coded information unit split motion information accurate prediction signal experimental result partial texture information extra l-mode
