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Optimizing GLCNMO version 2 method to detect Vietnam's urban expansion

Pham, Tuan Dung and Man, Duc Chuc and Nguyen, Thi Nhat Thanh and Bui, Quang Hung and Doan, Minh Chung (2016) Optimizing GLCNMO version 2 method to detect Vietnam's urban expansion. In: The 8th International Conference on Knowledge and Systems Engineering (KSE), 6-8 October 2016, Hanoi, Vietnam.

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No global scale land cover classification method performs with high accuracy at local scale. This study tries to develop a classification algorithm for urban area in Vietnam. This is the first assessment of the Global Land Cover by National Mapping Organizations (GLCNMO) version 2 method for producing global urban map in 2008. An improved and optimized algorithm is then developed based on the GLCNMO method for Vietnam taking into account of local natural and social conditions. Improving method is then applied to produce urban maps of Vietnam for the years of 2008 and 2015. Accuracy assessment showed that the improved method can achieve up to 13% higher precision and 10% higher F1 measure as compared to the global GNCNMO method. Also, an increasing trend was observed in population density in urban area in the period from 2008 to 2015 in Vietnam which may correspond to fast urbanization process in the country. The cities also tend to become less green in 2015 than 2008 as indicated by comparing the Normalized Difference Vegetation Index (NDVI) between the two years.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Remote sensing;Satellites;Sociology;Spatial resolution;Statistics;Urban areas;Vegetation mapping;GLCNMO version2;Vietnam's urban map;optimizing;urban expansion;urbanization
Subjects: Information Technology (IT)
Divisions: Center of Multidisciplinary Integrated Technologies for Field Monitoring (FIMO)
Faculty of Information Technology (FIT)
Depositing User: Dr Thi Nhat Thanh Nguyen
Date Deposited: 14 Dec 2017 03:34
Last Modified: 14 Dec 2017 03:34

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