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Remote Sensing Technology and Application  2015, Vol. 30 Issue (6): 1206-1214    DOI: 10.11873/j.issn.1004-0323.2015.6.1206
    
Modification of Cellular Automata (CA) Used in Sub-pixel Mapping
Li Xiaojun,Lü Heng,Li Yunmei,Wang Yu,Zhang Jie,Pan Hongzhou
(Key Laboratory of Virtual Geographic Environment of Education Ministry,
Nanjing Normal University,Nanjing 210023,China)
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Abstract  

Cellular Automata (CA) was frequently used to Sub-pixel mapping,which is a technique designed to obtain the spatial distribution of classes with information contained in mixed pixels.However,it has several drawbacks,such as large number of iterations,evolution “insufficiency” and equivocation of termination condition,which restricted the further application in remote sensing.In this study CA was improved in three aspects to overcome problems that mentioned above,which included the modification of initialization,the modification of CA progress and a clear termination condition .Two images were employed to test running efficiency of improved CA.Although the adjusted Kappa coefficients of final Sub-pixel mapping results increased only by 4.1% and 3.7%,number of Iterations reduced and the CA running time accounted for only 25.8% of the original.The result showed that the improved CA can significantly improve the running efficiency.In addition,the clear termination condition made it more practical application value.
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Key words:  Remote sensing      Sub-pixel Mapping      Cellular Automata(CA)      Scale     
Received:  05 June 2014      Published:  25 January 2016
TP 751.1  
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Li Xiaojun
Lü Heng
Li Yunmei
Wang Yu
Zhang Jie
Pan Hongzhou

Cite this article: 

Li Xiaojun,Lü Heng,Li Yunmei,Wang Yu,Zhang Jie,Pan Hongzhou. Modification of Cellular Automata (CA) Used in Sub-pixel Mapping. Remote Sensing Technology and Application, 2015, 30(6): 1206-1214.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2015.6.1206     OR     http://www.rsta.ac.cn/EN/Y2015/V30/I6/1206

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