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Multivariate texture-based segmentation of remotely sensed imagery for extraction of objects and their uncertainty


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Lucieer, A and Stein, A and Fisher, PF (2005) Multivariate texture-based segmentation of remotely sensed imagery for extraction of objects and their uncertainty. International Journal of Remote Sensing, 26 (14). pp. 2917-2936. ISSN 1366-5901

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In this study, a segmentation procedure is proposed, based on grey-level and multivariate texture to extract spatial objects from an image scene. Object uncertainty was quantified to identify transitions zones of objects with
indeterminate boundaries. The Local Binary Pattern (LBP) operator, modelling texture, was integrated into a hierarchical splitting segmentation to identify homogeneous texture regions in an image. We proposed a multivariate extension of the standard univariate LBP operator to describe colour texture. The paper is illustrated with two case studies. The first considers an image with a composite of texture regions. The two LBP operators provided good segmentation results on both grey-scale and colour textures, depicted by accuracy values of 96% and 98%, respectively. The second case study involved segmentation of coastal land cover objects from a multi-spectral Compact Airborne Spectral Imager (CASI) image, of a coastal area in the UK. Segmentation based on the univariate LBP measure
provided unsatisfactory segmentation results from a single CASI band (70% accuracy). A multivariate LBP-based segmentation of three CASI bands improved segmentation results considerably (77% accuracy). Uncertainty values for object building blocks provided valuable information for identification of object transition zones. We conclude that the (multivariate) LBP texture model in combination with a hierarchical splitting segmentation framework is suitable for identifying objects and for quantifying their uncertainty.

Item Type: Article
Journal or Publication Title: International Journal of Remote Sensing
Page Range: pp. 2917-2936
ISSN: 1366-5901
Date Deposited: 10 Jan 2007
Last Modified: 18 Nov 2014 03:12
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