Fast Intra Prediction Based on the Texture Feature for H.264/AVC Encoding

WANG Ping; LI Ping

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Fast Intra Prediction Based on the Texture Feature for H.264/AVC Encoding

更新时间：2026-09-04

- Fast Intra Prediction Based on the Texture Feature for H.264/AVC Encoding
- Vol. 31, Issue 11, Pages: 41-46(2014)
- 作者机构：
  
  西安交通大学电子与信息工程学院,陕西,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2014
- 稿件说明：
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王萍, 李平. 基于图像纹理特征的H.264/AVC帧内预测快速算法[J]. 微电子学与计算机, 2014, 31(11): 41-46.

WANG Ping, LI Ping. Fast Intra Prediction Based on the Texture Feature for H.264/AVC Encoding[J]. 2014, 31(11): 41-46.
王萍, 李平. 基于图像纹理特征的H.264/AVC帧内预测快速算法[J]. 微电子学与计算机, 2014, 31(11): 41-46. DOI：

WANG Ping, LI Ping. Fast Intra Prediction Based on the Texture Feature for H.264/AVC Encoding[J]. 2014, 31(11): 41-46. DOI：

摘要

为了降低H.264视频编码中帧内预测算法的复杂度

在基于4×4子块图像纹理检测的基础上

提出了结合块类型选择和候选模式选择的两步帧内预测快速算法.利用边缘检测模板得到宏块中每个4×4子块的纹理特征后

首先基于各个子块的边缘强度之间的离差选择合适的预测块类型;再针对所选块类型

基于块内所属的4×4子块的边缘方向进一步选择候选模式.实验结果表明

与原始全搜索算法相比

该快速算法能在保证编码性能基本不变的前提下

对全I帧序列的编码时间可以缩短平均74%.

Abstract

Intra coding in H.264/AVC can significantly improve the compression efficiency but at the cost of high computational complexity.To reduce the complexity

this paper presents a fast intra prediction algorithm including block type decision and candidate modes decision based on the texture detection of 4x4 blocks.After the texture feature of every 4x4 subblock in a macroblock by template matching is achieved

the proper block type is firstly chosen based on the deviation of subblocksedge strengths among a macrock Then for the chosen block type

the candidate modes are further decided based on the edge direction of current blocks.Experimental results show that the proposed fast algorithm can achieve 74% time saving on average for encoding the all intra-frame sequence with little loss of coding performance with the reference software.

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