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《Journal of Zhejiang University(Science Edition)》 2012-02
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A mechanism of remote sensing image for parallel processing base on splitting blocks

ZENG Zhi1,2,LIU Ren-yi2,LI Xian-tao1,2,ZHANG Feng1,2,BAO Wei-zheng3 (1.Zhejiang Provincial Key Lab of GIS,Zhejiang University,Hangzhou 310028,China;2.Institute of Geogrophic Information Science,Zhejiang University,Hangzhou 310028,China;3.Jinhua Management Offices of Surveying and Mapping,Jinhua 321000,Zhejiang Province,China)  
Large-scale parallel computing under cluster architecture is the basis of HPC(high performance computing).To enhance the efficiency of image processing for remote sensing depends on the application of technology of parallel computing.Towards the characteristic about the scarce quantity of objects on some images,this paper proposed an algorithm model for task allocating and image processing under distributed computing environment.Firstly,we split the area of image which contains the objects using quad-tree policy,and dispatched the data to computing node by using the idea on dynamic load balance to perform this computing.Experiment shows that the strategy on task allocation can improve the overall computing performance effectively.
【Fund】: 国家863基金资助项目(2009AA12Z222);; 浙江省重点攻关基金资助项目(2009C33011);; 浙江省自然科学基金资助项目(Y5090130);; 教育部博士点基金项目(200803350017)
【CateGory Index】: TP751
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