Hrvatske vode, Vol. 27 No. 110, 2019.
Review article
A comparison of algorithms for coastline mapping using satellite methods
Tea Duplančić Leder
; Fakultete građevinarstva, arhitekture i geodezije Sveučilišta u Splitu
Nenad Leder
; Pomorski fakultet Sveučilišta u Splitu
Abstract
The paper presents the methods of coastline determination and describes the method using remote sensing algorithms in more detail. It further analyses the results of the most widely used algorithms of the water indices NDWI, MNDWI, AWEI_nsh, AWEI_sh and WRI, which are used for determining coastlines and water surfaces in general. The algorithms were applied to the Landsat 8 and Sentinel 2 satellite imagery, with central Dalmatia selected as the test area. After the calculation of water indices, unsupervised classification and reclassification were conducted in these areas and, finally, the evaluation of the classification accuracy for each individual index was presented. The results were shown at larger scale for two areas – the Jadro river mouth in Solin and the Cetina river mouth in Omiš. The result analysis revealed that the best results were obtained using the NDWI water index and the poorest results using the AWEI_nsh water index.
Keywords
water indices; coastline; remote sensing; Landsat 8; Sentinel 2
Hrčak ID:
232905
URI
Publication date:
13.1.2020.
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