A new phase field model of a 'gas of circles' for tree crown extraction from aerial images

Authors:
Peter Horváth;Ian H. Jermyn
Affiliations:
University of Szeged, Institute of Informatics, Szeged, Hungary, Ariana, INRIA, Sophia Antipolis, France;Ariana, INRIA, Sophia Antipolis, France
Venue:
CAIP'07 Proceedings of the 12th international conference on Computer analysis of images and patterns
Year:
2007

Citing 4
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Abstract

We describe a model for tree crown extraction from aerial images, a problem of great practical importance for the forestry industry. The novelty lies in the prior model of the region occupied by tree crowns in the image, which is a phase field version of the higher-order active contour inflection point 'gas of circles' model. The model combines the strengths of the inflection point model with those of the phase field framework: it removes the 'phantom circles' produced by the original 'gas of circles' model, while executing two orders of magnitude faster than the contour-based inflection point model. The model has many other areas of application e.g., to imagery in nanotechnology, biology, and physics.