Based on our accumulated experience in the classification, according to the different remote sensing images, interpretation and classification standards are established. For different results, using the best automatic classification method after comparing, and using mask revision to re-classify or to re-classify by artificial interpretation, we can get the best results. After multi-temporal image classification tests in different regions, the accuracy can reach 80%.  

Fig 1.   Geographical information extraction of Pok Arthur city of Dalian in 1966

Fig 2.  Land use information extraction, Qisha town in Guangxi in 1964.

 

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