Energy analysis of HEVC compression with stochastic processing

Abstract

One of the serious challenges facing smartphones and other portable devices is battery life. We aim at improving the energy efficiency of multimedia applications for improved battery life while maintaining an acceptable level of user experience. In this paper, we first describe our work in the area of stochastic video compression using the HEVC encoder. We then show the results in energy savings in the encoding stage as a function of an imposed error in addition and subtraction operations. We also present the relationship between the increased bit error rate and the output size of the video. We explain the effect that this increase in file size has on the transmission energy as well as the overall number of instructions, and in particular, the memory read/write operations. We demonstrate the full energy analysis of the entire encoding process using the HEVC encoder and show the quantitative results in every stage.