Context-Based Ternary Tree Decision Method in Versatile Video Coding for Fast Intra Coding
Context-Based Ternary Tree Decision Method in Versatile Video Coding for Fast Intra Coding
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DOI：
10.1109/access.2019.2956196
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发表时间：
2019-01-01
期刊：
影响因子：
3.9
通讯作者：
Kang, Je-Won
中科院分区：
文献类型：
--
作者：
Park, Sang-Hyo;Kang, Je-Won
本文提出了一种通用视频编码（VVC）的快速编码方法，使用早期确定方案，跳过冗余多类型树（MTT）修剪。MTT由具有传统四叉树的二叉树和三叉树（TT）组成，并且由于编码效率超过HEVC，最近吸引了相当大的VVC研究兴趣。然而，额外的树，特别是TT，显着增加VVC的复杂性，这是以前很少研究。因此，我们在VVC编码上下文中确定了TT特性，并因此提出了一种简单的早期决策技术，可以有效地降低TT复杂度。对各种测试序列的实验表明，该方法大大减少了VVC测试模型4.0（VTM 4.0）的总编码时间，在全帧内配置下只有轻微的编码损失。特别是，与VTM 4.0相比，该方法将TT编码时间减少了66%。
This paper presents a fast encoding method for versatile video coding (VVC) using an early determination scheme that skips redundant multi-type tree (MTT) pruning. MTT consists of binary and ternary trees (TTs) with traditional quadtrees and has recently attracted considerable VVC research interest due to coding efficiency beyond HEVC. However, the additional trees, particularly TTs, significantly increased VVC complexity, which has rarely been studied previously. Therefore, we identified TT characteristics in the VVC encoding context, and hence propose a simple early decision technique that can effectively reduce TT complexity. Experiments over various test sequences show that the proposed method substantially decreased the total encoding time for a VVC test model 4.0 (VTM 4.0) with only slight coding loss under the all-intra configuration. In particular, the proposed method reduced TT encoding time by up to 66% compared with VTM 4.0.