Volume 16, Issue 59 (spring 2012)
jwss 2012, 16(59): 233-244 |
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Z. Khosravani, S. J. Khajeddin, A. Soffianian, M. Mohebbi, A. H. Parsamehr. Land-Use Map of East of Isfahan Using IRS-P6 Image. jwss 2012; 16 (59) :233-244
URL: http://jstnar.iut.ac.ir/article-1-2210-en.html
URL: http://jstnar.iut.ac.ir/article-1-2210-en.html
, z.khosravani@gmail.com
Abstract: (20155 Views)
LISS IV sensor's data from IRS-P6 satellite was used to produce land use map of eastern region of Isfahan, the studied part of which has an area of 22121 hectares. Its three band data, namely band 2 (Green), band 3 (Red) and band 4 (Near infra red) of LISS-IV sensor images with 5.8 m ground resolution were georeferenced by nearest neighbor method and first-order polynomial model to the DEM map of 1:25000, where the RMSE was equal to 0.3 pixel. To analyze the satellite data, various image processing methods such as supervised and unsupervised classification methods, principal component analysis, NDVI vegetation index and filtering were applied to the satellite data. Finally, the land use map was produced with hybrid method. The final map detected 6 land uses very clearly, which are: Agricultural lands, barren lands, disturbed lands, cultivated Haloxylon amodendron, roads, residential areas and industrial locations. The kappa of land use map is 0.89 and the overall precision is 0.92. The barren lands have a very poor natural vegetation and are considered as natural deserts. Disturbed lands have been formed because of brick kiln activities, and the vegetation cover of these areas has disappeared completely The LISS IV data has a high ability to detect the various studied land-uses especially to digitize the roads. They can be used to update the 1:25000 topographic maps, as well.
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