Abstract
The multi-view HEVC (MV-HEVC) extension was finalized in July of 2014 by the Moving Picture Experts Group and the Video Coding Experts Group. Recently, multi-view videos based on stereo representations are becoming widely popular. Also, a variety of multimedia contents are now available for mobile devices. A real-time multi-view video decoder is therefore needed. In mobile devices, a real-time decoding multi-view video is difficult because of the increasing number of views, spatial resolutions, and limited speed of the processors on mobile platforms. In this paper, we propose a novel architecture for a real-time decoder in mobile devices. The proposed MV-HEVC decoder uses parallel-optimized multi-view video decoding with multi-threading, using advanced reduced instruction set computer machine (ARM) Cortex multi-core processors. Moreover, it is optimized in single instruction multiple data for an ARM platform. The proposed multi-core decoding architectures enable multi-threading with minimum processing overhead. Experimental results show that the proposed multi-view video coding increased the speed by around 2.4–4.8 times in the ARM platform compared to MV-HEVC.
Highlights
With the rapid development of the mobile Internet, mobile platforms for video technologies are becoming increasingly popular
2.2 New multi-thread algorithm for multi-view High Efficiency Video Coding (HEVC) (MV-HEVC) We describe a new architecture for decoding motion vectors (MVs)-HEVC with N views on a target platform with M cores and
Compared with single-thread decoding of eight views in MV-HEVC, our proposed two-thread method will reduce the decoding time consumed by about 50%
Summary
With the rapid development of the mobile Internet, mobile platforms for video technologies are becoming increasingly popular. For this reason, the resolution of the mobile platform screen has been improving. The High Efficiency Video Coding (HEVC) compression scheme can improve the compression efficiency of 1080P video content by about 50% compared with H.264 [1]. HEVC is a video compression standard and is considered the successor of the H.264/MPEG-4, Advanced Video Coding International Telecommunication Union Telecommunication Standardization Sector (AVC ITU-T) standard. The first edition of the HEVC video compression standard in April 13, 2013, was accepted by the International Telecommunication Union (ITU-T), the official standard [2,3,4].
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