Time and energy modeling of an INTRA-ONLY HEVC encoder

In this paper, we present precise time and energy models for an intra-only HEVC video encoder. These models are a step forward to understand and estimate the computational complexity and energy demands of an HEVC encoder, which in turn opens the path to finely tuning the computational resources that are dedicated to this purpose. Our models estimate the complexity and energy consumed by the HEVC encoder, in a frame by frame basis, considering two factors: the quantification parameter used to encode each frame and the spatial information of that frame. Our experimental validation demonstrates the accuracy of these models, which report errors that are, on average, below 10% for full HD videos, and 5% for 832 × 480 videos.