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Our goal is to identify the most effective methods for delineating urban impervious surfaces using Landsat imagery, thereby guiding applications for selecting cost-effective delineation techniques. A high-resolution aerial photo was used to delineate impervious surfaces for selected census tracts for the City of Roanoke, Virginia. National Land Cover Database Impervious Surface data provided an overall accuracy benchmark at the city scale which was used to assess the Landsat classifications. Three different classification methods using three different band combinations provided overall accuracies in excess of 70% for the entire city. However, there were substantial variations in accuracy when the results were subdivided by census tract. No single classification method was found most effective across all census tracts; the best method for a specific tract depended on method, band combination, and physical characteristics of the area. These results highlight impacts of inherent local variability upon attempts to characterize physical structures of urban regions using a single metric, and the value of analysis at finer spatial scales.<\/jats:p>","DOI":"10.3390\/rs5104942","type":"journal-article","created":{"date-parts":[[2013,10,10]],"date-time":"2013-10-10T14:11:12Z","timestamp":1381414272000},"page":"4942-4960","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":34,"title":["Comparing Urban Impervious Surface Identification Using Landsat and High Resolution Aerial Photography"],"prefix":"10.3390","volume":"5","author":[{"given":"Tammy","family":"Parece","sequence":"first","affiliation":[{"name":"Department of Geography, Virginia Tech, 115 Major Williams Hall, Blacksburg, VA 24061, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2617-7272","authenticated-orcid":false,"given":"James","family":"Campbell","sequence":"additional","affiliation":[{"name":"Department of Geography, Virginia Tech, 115 Major Williams Hall, Blacksburg, VA 24061, USA"}]}],"member":"1968","published-online":{"date-parts":[[2013,10,10]]},"reference":[{"key":"ref_1","unstructured":"Bakker, N., Dubbeling, M., Gundel, S., Sabel-Koschella, U., and de Zeeuw, H. 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