Video Compression Beyond VVC: Quantitative Analysis of Intra Coding Tools in Enhanced Compression Model (ECM)

TL;DR

This paper provides a detailed quantitative analysis of intra coding tools in the Enhanced Compression Model (ECM) beyond VVC, focusing on their statistical behaviors and interactions to inform standardization efforts.

Contribution

It offers new insights into the selection rates and interactions of intra coding tools in ECM across different conditions, aiding in optimal tool combination design.

Findings

Identification of tool selection rate trends under various conditions

Analysis of interactions between luma and chroma intra tools

Evaluation on sequences beyond standard database

Abstract

A quantitative analysis of post-VVC luma and chroma intra tools is presented, focusing on their statistical behaviors, in terms of block selection rate under different conditions. The aim is to provide insights to the standardization community, offering a clearer understanding of interactions between tools and assisting in the design of an optimal combination of these novel tools when the JVET enters the standardization phase. Specifically, this paper examines the selection rate of intra tools as function of 1) the version of the ECM, 2) video resolution, and 3) video bitrate. Additionally, tests have been conducted on sequences beyond the JVET CTC database. The statistics show several trends and interactions, with various strength, between coding tools of both luma and chroma.