OTED: Encoding Optimization Technique Targeting Energy-Efficient HEVC Decoding
Douglas Corrêa, Guilherme Corrêa, Daniel Palomino, Bruno Zatt · 2018
This work exploits the encoding for decoding concept by proposing an encoding optimization technique targeting energy-efficient HEVC decoding (called OTED). OTED changes the Rate-Distortion Optimization (RDO) calculation at the encoder side by adding the decoding energy estimation as a new variable to be considered. Along with this estimation, we use the Running Average Power Limit (RAPL) energy measurement tool to present real energy results and prove the efficiency of OTED. Experimental results show that the proposed algorithm can reach an energy reduction of up to 17.7% at the HEVC decoder with a small cost in coding efficiency. Besides being compliant with the standard HEVC decoder, the algorithm presents high levels of energy reduction for different encoding configurations. Furthermore, when compared with state-of-the-art works OTED presents the best relation between energy reduction consumption at the encoder side and coding efficiency.