一种HEVC帧内预测模式决策的快速算法

doi:10.12066/j.issn.1007-2861.2639

上海大学学报(自然科学版) ›› 2025, Vol. 31 ›› Issue (3): 561-570.doi: 10.12066/j.issn.1007-2861.2639

• 通信工程 • 上一篇

一种HEVC帧内预测模式决策的快速算法

王爽¹, 刘家良², 张海坤¹, 胡越黎¹

1. 上海大学机电工程与自动化学院, 上海 200444;
2. 合肥酷芯微电子有限公司, 上海 200433

收稿日期:2024-07-07 出版日期:2025-06-30 发布日期:2025-07-22
通讯作者: 胡越黎(1959-),男,教授,博士生导师,博士,研究方向为机器视觉、信号处理和AI算法等. E-mail:huyueli@shu.edu.cn

A fast algorithm of HEVC intra mode decision

WANG Shuang¹, LIU Jialiang², ZHANG Haikun¹, HU Yueli¹

1. School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China;
2. Hefei Artosyn Microelectronics Co., Ltd., Shanghai 200433, China

Received:2024-07-07 Online:2025-06-30 Published:2025-07-22

摘要/Abstract

摘要： 高效视频编码(high efficiency video coding,HEVC)相较于上一代编码标准H.264降低了约50%的比特率,但为了提高帧内预测的准确性,HEVC提出的35种预测模式导致计算量大幅增加,对软件和硬件实现均构成了挑战.针对该问题,在HEVC的基础上提出了一种依据图片纹理方向,结合预测模式之间的关联性来确定帧内预测模式的快速算法.实验结果表明,本算法与HEVC参考软件HM16.20相比,在BD-Rate损失仅为5.79%的情况下,节省46%以上的编码时间,显著降低了帧内预测模式决策的复杂度,便于在嵌入式系统等硬件资源有限的端侧实现算法落地.

关键词: 高效视频编码, 帧内预测, 角度模式, 预测模式决策

Abstract: Although high-efficiency video coding（HEVC） can reduce bit rates by approximately 50% over its predecessor H.264, 35 prediction modes have been proposed to improve intra-prediction accuracy, resulting in a significant increase in computational complexity and a challenge for both software and hardware implementation. To address this issue, this study proposes a fast algorithm based on HEVC to determine the intra-prediction mode based on the image’s texture direction and correlation between the prediction modes. Experimental results show that this algorithm can save over 46% encoding time when the BD-rate loss is only 5.79% compared to the HEVC reference software HM16.20, which significantly reduces the complexity of the intra prediction mode decision and makes it easy to implement the algorithm landing on the end side with limited hardware resources such as embedded systems.

Key words: high efficiency video coding（HEVC）, intra prediction, angle mode, mode prediction decision

中图分类号:

TN919.81

王爽, 刘家良, 张海坤, 胡越黎. 一种HEVC帧内预测模式决策的快速算法[J]. 上海大学学报(自然科学版), 2025, 31(3): 561-570.

WANG Shuang, LIU Jialiang, ZHANG Haikun, HU Yueli. A fast algorithm of HEVC intra mode decision[J]. Journal of Shanghai University（Natural Science Edition）, 2025, 31(3): 561-570.

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一种HEVC帧内预测模式决策的快速算法

A fast algorithm of HEVC intra mode decision

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