PixoComp: a novel video compression scheme utilizing temporal pixograms

摘要

This paper introduces a new compression scheme that exploits temporal redundancies in video segments utilizing the pixogram concept recently introduced in the literature. By taking into consideration the correlation between video pixels along the time domain, a pixogram has the ability to transform uncorrelated spatial areas of separate video-frames into highly correlated temporal vectors, thus increasing redundancy in the transform domain. This strategy allows for higher compression ratios in video streams. The proposed compression scheme is the first compression technique that utilizes the pixogram concept in video compression, and aims to challenge the traditional trade-off associated with high compression ratios leading to reduced visual quality. Comparisons with popular compression standards demonstrate the advantage this new approach has for highly correlated video segments. Moreover, the proposed technique is more suitable to parallelization, and thus outperforms other compression techniques in terms of execution time.