摘要
针对传统串行镶嵌在单机模式下效率低下的问题,提出一种基于单机模式的小规模遥感影像并行镶嵌方法。通过对串行镶嵌过程的分析,将有效镶嵌区域按照处理内容划分为不同类型的数据子块,采用经典的"生产者-消费者"模型,实现了数据处理与磁盘I/O的解耦,以串行流水线的工作模式最大程度地隐藏了数据处理时间,从而有效提高了镶嵌效率。与商用软件ArcGIS进行了镶嵌效率对比,在小规模遥感影像整幅镶嵌应用中,该方法获得了2倍左右的加速效果。
Aiming at the low efficiency of traditional serial mosaicking on stand-alone machines,aparallel mosaicking method of small scale remote sensing images is proposed.Through the analysis of serial mosaic process,effective mosaic region is further divided into different types of sub blocks according to processing contents.The classic parallel model of ＂producerconsumer＂is introduced to realize the decoupling of data processing and disk I/O.The resulted serial pipeline mode enables to greatly hide the data processing time,so as to effectively improve the efficiency of mosaic.Compared with the commercial software ArcGIS,the efficiency of this method is better and acquires about two times speed-up effect in mosaicking.
作者
张建兴
杨柳忠
于静
张宁
ZHANG Jianxing;YANG Liuzhon;YU Jing;ZHANG Ning(Remote Sensing Application Center,Ministry of Housing and Urban-rural Development 9Beijing 100835,China;State Key Laboratory of Resources and Environment Information System of Chinese Academy ofSciences,Beijing 100101,China)
出处
《遥感信息》
CSCD
北大核心
2018年第3期136-142,共7页
Remote Sensing Information
基金
国家重点研发计划项目(2017YFB0503900)
