Optimization on Motion Estimation Algorithm Based on H.264

WU Xiao-jun; BAI Shi-jun; LU Wen-tao

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Optimization on Motion Estimation Algorithm Based on H.264

更新时间：2025-07-16

- Optimization on Motion Estimation Algorithm Based on H.264
- Acta Electronica Sinica Vol. 37, Issue 11, Pages: 2541-2545(2009)
- 作者机构：
  
  哈尔滨工业大学深圳研究生院,广东,深圳,518055
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN943
- Published：2009
- 稿件说明：
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WU Xiao-jun, BAI Shi-jun, LU Wen-tao. Optimization on Motion Estimation Algorithm Based on H.264[J]. Acta Electronica Sinica, 2009, 37(11): 2541-2545.
DOI：

WU Xiao-jun, BAI Shi-jun, LU Wen-tao. Optimization on Motion Estimation Algorithm Based on H.264[J]. Acta Electronica Sinica, 2009, 37(11): 2541-2545. DOI：

摘要

运动估计是视频压缩中最重要的环节.H.264编码器由于采用了高精度运动矢量

计算量迅速增长

运动估计消耗整个编码时间80％左右.本文在分析UMHexagonS算法的基础上

分别对UMHexagonS算法中搜索窗口大小的选择、大六边形搜索和小六边形(小钻石)搜索模式三方面做了优化

在保持了原有图象质量的情况下有效的节省了运动估计时间.通过对各种测试序列的实验证明

优化后的算法与UMHexagonS算法相比

在重建图象质量和码率接近的情况下

运动估计时间平均节省了18.292%

降低了算法的复杂度

提高了编码器的实时性.

Abstract

Motion estimation (ME) is vital to video compression.Due to the adoption of the high precision of motion vector (MV) in H.264 encoder

the computational cost increases rapidly

and ME takes almost 80% encoding time.In this paper

based on the UMHexagonS algorithm

an optimized algorithm is proposed based on the dynamic search range selection

big hexagon and small hexagon search mode respectively

which saves ME time effectively without quality loss.Experimenting with some typical video sequences proves that

compared to UMHexagonS algorithm

our optimized algorithm can save about 18.292% ME time and reduce the complexity of original scheme as well as enhance the real-time performance of the encoder but almost has no change in the reconstructed picture quality and bitrate.

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A New Motion Estimation and Intra-frame Prediction Method for H.264 Video Coding

Design of a Highly Parallel and Double-Level Pipelined CAVLC Encoder for H.264

An Efficient Reconfigurable VLSI Architecture for H.264 High Profile Inverse Transform

Accurate Motion Estimation of High Speed Moving Target about Stepped-Frequency Chirp Signal

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