TY - CONF T1 - A New Phase Field Model of a 'gas of Circles' for Tree Crown Extraction from Aerial Images T2 - Proceedings of the International Conference on Computer Analysis of Images and Patterns (CAIP) Y1 - 2007 A1 - Peter Horvath A1 - Ian Jermyn ED - Walter G. Kropatsch ED - Martin Kampel ED - Allan Hanbury JF - Proceedings of the International Conference on Computer Analysis of Images and Patterns (CAIP) CY - Vienna, Austria VL - 4673 ER -