Skip to main content

Research Repository

Advanced Search

A `Gas of Circles' Phase Field Model and its Application to Tree Crown Extraction

Horváth, P.; Jermyn, I.H.

A `Gas of Circles' Phase Field Model and its Application to Tree Crown Extraction Thumbnail


Authors

P. Horváth



Abstract

The problem of extracting the region in the image domain corresponding to an a priori unknown number of circular objects occurs in several domains. We propose a new model of a ‘gas of circles’, the ensemble of regions in the image domain composed of circles of a given radius. The model uses the phase field reformulation of higher-order active contours (HOACs). Phase fields possess several advantages over contour and level set approaches to region modelling, in particular for HOAC models. The reformulation allows us to benefit from these advantages without losing the strengths of the HOAC framework. Combined with a suitable likelihood energy, and applied to the tree crown extraction problem, the new model shows markedly improved performance, both in quality of results and in computation time, which is two orders of magnitude less than the HOAC level set implementation.

Citation

Horváth, P., & Jermyn, I. (2007). A `Gas of Circles' Phase Field Model and its Application to Tree Crown Extraction. In 15th European Signal Processing Conference (EUSIPCO 2007), Poznan, Poland, September 3-7, 2007 ; proceedings

Conference Name 15th European Signal Processing Conference (EUSIPCO 2007)
Conference Location Poznan
Publication Date Sep 1, 2007
Deposit Date Aug 12, 2011
Publicly Available Date Mar 28, 2024
Book Title 15th European Signal Processing Conference (EUSIPCO 2007), Poznan, Poland, September 3-7, 2007 ; proceedings
Publisher URL http://www.eusipco2007.org/

Files





You might also like



Downloadable Citations