文章基本信息

标题：Identification of roofing materials with Discriminant Function Analysis and Random Forest classifiers on pan-sharpened WorldView-2 imagery – a comparison
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作者：Dávid ABRIHA ; Zoltán KOVÁCS ; Sarawut NINSAWAT 等
期刊名称：Hungarian Geographical Bulletin
印刷版ISSN：2064-5031
电子版ISSN：2064-5147
出版年度：2018
卷号：67
期号：4
DOI：10.15201/hungeobull.67.4.6
语种：English
出版社：Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences
摘要：Identification of roofing material is an important issue in the urban environment due to hazardous and risky materials.We conducted an analysis with Discriminant Function Analysis (DFA) and Random Forest (RF) on WorldView-2 imagery.We applied a three- and a six-class approach (red tile, brown tile and asbestos;then dividing the data into shadowed and sunny roof parts).Furthermore, we applied pan-sharpening to the image.Our aim was to reveal the efficiency of the classifiers with a different number of classes and the efficiency of pan-sharpening.We found that all classifiers were efficient in roofing material identification with the classes involved, and the overall accuracy was above 85 per cent.The best results were gained by RF, both with three and with six classes;however, quadratic DFA was also successful in the classification of three classes.Usually, linear DFA performed the worst, but only relatively so, given that the result was 85 per cent.Asbestos was identified successfully with all classifiers.The results can be used by local authorities for roof mapping to build registers of buildings at risk.
关键词：remote sensing;pan-sharpening;asbestos;machine learning