多线程技术在JEPG2000图像解码中的应用  

Application of Multi-Threading in JEPG2000 Video Decoding

作　　者：范少卓[1] 邓家先[1] 王成成[1] 

机构地区：[1]海南大学信息科学与技术学院,海口570228

出　　处：《计算机系统应用》2011年第3期145-148,160,共5页Computer Systems & Applications

摘　　要：多线程技术已经得到广泛地应用,基于多线程的视频解码技术具有很高的研究价值和实用价值,它可以大大提高图像的解码速度。提出了一种在Windows环境下多线程编程的实现方法,并将其应用在了JEPG2000图像解码中,实现了图像解码并行处理,提高了图像的解码速度。结果显示,应用多线程技术之后,JEPG2000解码程序在双核,四核处理器上的运行速度相对单核处理器分别提高了2倍和4倍。多线程技术充分利用多核计算机的资源提高了程序运行的效率。Multithread technology is becoming widely popular.Video decoding based on multi-threading has important research value and use value,it will achieve high improvement in decoding speed.This paper introduces the impletmentation of multithread programming in Mcrosoft Windows.Applying the multithreading technique in JEPG2000 video decoding,the image datas could be processed parallelly,and the decoding speed will be increased.The experiment results show that,system with binuclear,tetranuclear and eight kernels improves the decoding speed by two times,four times and eight times,respectively,compared to system with mononuclear.The Multi-threading technique improves the efficiency of program running by making full use of the resources of multi-core computer.

关 键 词：多线程 并行 JEPG2000解码 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]