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Decoding-Complexity-Aware HEVC Encoding Using a Complexity-Rate-Distortion Model

Mallikarachchi, Thanuja, Talagala, Dumidu S., Arachchi, Hemantha Kodikara and Fernando, Anil (2018) Decoding-Complexity-Aware HEVC Encoding Using a Complexity-Rate-Distortion Model IEEE Transactions on Consumer Electronics, 64 (1). pp. 35-43.

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The energy consumption of Consumer Electronic (CE) devices during media playback is inexorably linked to the computational complexity of decoding compressed video. Reducing a CE device’s the energy consumption is therefore becoming ever more challenging with the increasing video resolutions and the complexity of the video coding algorithms. To this end, this paper proposes a framework that alters the video bit stream to reduce the decoding complexity and simultaneously limits the impact on the coding efficiency. In this context, this paper (i) first performs an analysis to determine the trade-off between the decoding complexity, video quality and bit rate with respect to a reference decoder implementation on a General Purpose Processor (GPP) architecture. Thereafter, (ii) a novel generic decoding complexity-aware video coding algorithm is proposed to generate decoding complexity-rate-distortion optimized High Efficiency Video Coding (HEVC) bit streams. The experimental results reveal that the bit streams generated by the proposed algorithm achieve 29.43% and 13.22% decoding complexity reductions for a similar video quality with minimal coding efficiency impact compared to the state-of-the-art approaches when applied to the HM16.0 and openHEVC decoder implementations, respectively. In addition, analysis of the energy consumption behavior for the same scenarios reveal up to 20% energy consumption reductions while achieving a similar video quality to that of HM 16.0 encoded HEVC bit streams.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Talagala, Dumidu
Arachchi, Hemantha Kodikara
Date : 2 March 2018
DOI : 10.1109/TCE.2018.2810479
Copyright Disclaimer : © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords : Complexity-rate-distortion; Decoding complexity; Decoding energy; Energy minimization; HEVC
Depositing User : Clive Harris
Date Deposited : 20 Mar 2018 14:25
Last Modified : 21 Nov 2019 10:04

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