Reusing the H.264/AVC deblocking filter for efficient spatio-temporal prediction in video coding

TL;DR

This paper introduces a method to reuse the H.264/AVC deblocking filter for combined spatio-temporal prediction in video coding, significantly improving compression efficiency with low computational cost.

Contribution

The paper proposes reusing the existing H.264/AVC deblocking filter for efficient spatio-temporal prediction, reducing complexity and increasing compression gains.

Findings

Up to 7.2% average rate reduction

Low computational complexity of the prediction mode

Effective reuse of existing filter for improved compression

Abstract

The prediction step is a very important part of hybrid video codecs for effectively compressing video sequences. While existing video codecs predict either in temporal or in spatial direction only, the compression efficiency can be increased by a combined spatio-temporal prediction. In this paper we propose an algorithm for reusing the H.264/AVC deblocking filter for spatio-temporal prediction. Reusing this highly op timized filter allows for a very low computational complexity of this prediction mode and an average rate reduction of up to 7.2% can be achieved.