Investigating Issues in Map Accuracy When Using an Object-Based Approach to Map Benthic Habitats

Abstract

In a recent study, benthic habitat maps were created of the Texas Gulf Coast from digital aerial imagery. The images were classified using an object-based image analysis (OBIA) approach and a classification and regression tree (CART) technique. The map was manually edited, changing 26% of the polygons' labels. Accuracy assessments of the unedited map and the edited map revealed the two were not significantly different. The research in this paper evaluates why these maps may have similar accuracies. Our analyses indicate that the small segmentation scale parameter used over-segmented the imagery, reducing the effectiveness of the CART technique and editing.

Department

Natural Resources and the Environment

Publication Date

6-1-2011

Journal Title

GIScience and Remote Sensing

Publisher

Bellwether Publishing

Digital Object Identifier (DOI)

10.2747/1548-1603.48.4.457

Document Type

Article

Rights

© 2011 by Bellwether Publishing

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