Accuracy assessment of nigeriasat-x and landsat images for landuse/landcover analyses in enugu state,Nigeria

International Journal of Applied Physics

© 2019 by SSRG - IJAP Journal

Volume 6 Issue 3

Year of Publication : 2019

Authors : Francis D. Chizea and Benjamin G. Ayantunji

10.14445/23500301/IJAP-V6I3P102

How to Cite?

Francis D. Chizea and Benjamin G. Ayantunji, "Accuracy assessment of nigeriasat-x and landsat images for landuse/landcover analyses in enugu state,Nigeria," SSRG International Journal of Applied Physics, vol. 6,  no. 3, pp. 9-15, 2019. Crossref, https://doi.org/10.14445/23500301/IJAP-V6I3P102

Abstract:

This study aimed at assessing the difference in Landuse characterization, relative accuracy of feature definitions and the usage of spatial data with NigeriaSat-X and Landsat ETM images. Images from the two satellites over Enugu taken concurrently were analysed. The result supports the knowledge that each image has certain relative advantage over the other. For instance, while NigeriaSat-X images have shown to be very efficient in the analysis of information within the visible portion of the electromagnetic spectrum. Information from Landsat ETM images was rather weak at both portions (Visible and NIR) of the Electromagnetic Spectrum. The study also showed that NigeriaSat-X images have higher level of reliability accuracy of (76.03 %) than Landsat ETM (70.74%). The reasons for this may be the intrinsic characteristics of the images. Another reason of course, is that spectral characteristics among the different land cover types (e.g. built-up, bare rock) could be similar. Finally, the images differ in their ability to reveal Landuse characteristics and differences in spatial resolution may not be a challenge to accuracy but interpretation and explanation of the obtained information which majorly depends on the subject of interest.

Keywords:

landcover analyses , landsat images for landuse , Fieldwork and Primary Data , Pixel Re-sampling

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