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Article: Using pan-sharpened high resolution satellite data to improve impervious surfaces estimation

TitleUsing pan-sharpened high resolution satellite data to improve impervious surfaces estimation
Authors
KeywordsImpervious surface estimation
Classification
Pan-sharpening
Scale effect
Support vector machine
Issue Date2017
Citation
International Journal of Applied Earth Observation and Geoinformation, 2017, v. 57, p. 177-189 How to Cite?
Abstract© 2016 Elsevier B.V. Impervious surface is an important environmental and socio-economic indicator for numerous urban studies. While a large number of researches have been conducted to estimate the area and distribution of impervious surface from satellite data, the accuracy for impervious surface estimation (ISE) is insufficient due to high diversity of urban land cover types. This study evaluated the use of panchromatic (PAN) data in very high resolution satellite image for improving the accuracy of ISE by various pan-sharpening approaches, with a further comprehensive analysis of its scale effects. Three benchmark pan-sharpening approaches, Gram-Schmidt (GS), PANSHARP and principal component analysis (PCA) were applied to WorldView-2 in three spots of Hong Kong. The on-screen digitization were carried out based on Google Map and the results were viewed as referenced impervious surfaces. The referenced impervious surfaces and the ISE results were then re-scaled to various spatial resolutions to obtain the percentage of impervious surfaces. The correlation coefficient (CC) and root mean square error (RMSE) were adopted as the quantitative indicator to assess the accuracy. The accuracy differences between three research areas were further illustrated by the average local variance (ALV) which was used for landscape pattern analysis. The experimental results suggested that 1) three research regions have various landscape patterns; 2) ISE accuracy extracted from pan-sharpened data was better than ISE from original multispectral (MS) data; and 3) this improvement has a noticeable scale effects with various resolutions. The improvement was reduced slightly as the resolution became coarser.
Persistent Identifierhttp://hdl.handle.net/10722/277689
ISSN
2020 Impact Factor: 5.933
2020 SCImago Journal Rankings: 1.623
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXu, Ru-
dc.contributor.authorZhang, Hongsheng-
dc.contributor.authorWang, Ting-
dc.contributor.authorLin, Hui-
dc.date.accessioned2019-09-27T08:29:42Z-
dc.date.available2019-09-27T08:29:42Z-
dc.date.issued2017-
dc.identifier.citationInternational Journal of Applied Earth Observation and Geoinformation, 2017, v. 57, p. 177-189-
dc.identifier.issn1569-8432-
dc.identifier.urihttp://hdl.handle.net/10722/277689-
dc.description.abstract© 2016 Elsevier B.V. Impervious surface is an important environmental and socio-economic indicator for numerous urban studies. While a large number of researches have been conducted to estimate the area and distribution of impervious surface from satellite data, the accuracy for impervious surface estimation (ISE) is insufficient due to high diversity of urban land cover types. This study evaluated the use of panchromatic (PAN) data in very high resolution satellite image for improving the accuracy of ISE by various pan-sharpening approaches, with a further comprehensive analysis of its scale effects. Three benchmark pan-sharpening approaches, Gram-Schmidt (GS), PANSHARP and principal component analysis (PCA) were applied to WorldView-2 in three spots of Hong Kong. The on-screen digitization were carried out based on Google Map and the results were viewed as referenced impervious surfaces. The referenced impervious surfaces and the ISE results were then re-scaled to various spatial resolutions to obtain the percentage of impervious surfaces. The correlation coefficient (CC) and root mean square error (RMSE) were adopted as the quantitative indicator to assess the accuracy. The accuracy differences between three research areas were further illustrated by the average local variance (ALV) which was used for landscape pattern analysis. The experimental results suggested that 1) three research regions have various landscape patterns; 2) ISE accuracy extracted from pan-sharpened data was better than ISE from original multispectral (MS) data; and 3) this improvement has a noticeable scale effects with various resolutions. The improvement was reduced slightly as the resolution became coarser.-
dc.languageeng-
dc.relation.ispartofInternational Journal of Applied Earth Observation and Geoinformation-
dc.subjectImpervious surface estimation-
dc.subjectClassification-
dc.subjectPan-sharpening-
dc.subjectScale effect-
dc.subjectSupport vector machine-
dc.titleUsing pan-sharpened high resolution satellite data to improve impervious surfaces estimation-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jag.2016.12.020-
dc.identifier.scopuseid_2-s2.0-85045137736-
dc.identifier.volume57-
dc.identifier.spage177-
dc.identifier.epage189-
dc.identifier.eissn1872-826X-
dc.identifier.isiWOS:000394475700017-
dc.identifier.issnl1569-8432-

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