Journal of Computer Applications ›› 2005, Vol. 25 ›› Issue (12): 2798-2799.

• Network and distributed techno • Previous Articles     Next Articles

Optimization of H.264 encoder based on SIMD technology

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  1. School of Electronic and Information,Northwest Polytechnical University,Xi’an Shaanxi 710072,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2005-12-01 Published:2005-12-01

基于单指令多数据技术的H.264编码优化

朱林冯燕   

  1. 西北工业大学电子信息学院

Abstract: The SIMD(Single-Instruction Multiple-Data) instruction system was introduced,and further Integer DCT(Discrete Cosine Transform),quant,interpolation and motion estimation of H.264 were optimized with the SIMD technology.The experiment indicates that the encoding speed of program after optimization reaches about 30fps and the speed has been improved by 68 times.

Key words: H.264, Single-Instruction Multiple-Data(SIMD), Integer DCT(Discrete Cosine Transform), interpolation, Sum of Absolute Difference(SAD)

摘要: 简要介绍了单指令多数据(Single-Istruction Multiple-Data,SIMD)指令系统,并用该技术对H.264中的整数离散余弦变换(Discrete Cosine Transform,DCT)、量化、插值和运动估计等模块进行了优化,实验结果表明优化后程序的编码速率可达到30fps左右,比未优化时速度提高了6~8倍。

关键词: H.264, 单指令多数据, 整数离散余弦变换, 插值, 绝对误差和

CLC Number: