%0 Conference Proceedings
%4 dpi.inpe.br/vagner/1999/10.27.15.56
%2 sid.inpe.br/banon/2001/03.30.15.57.27
%T Towards a Method for Automatic Identification of Trees in Aerial Images
%D 1999
%A Wang, Bing,
%A Matias, Italo O.,
%A Luiz M. G. Goncalves,
%E Stolfi, Jorge,
%E Tozzi, Clésio Luis,
%B Brazilian Symposium on Computer Graphics and Image Processing, 12 (SIBGRAPI)
%C Campinas, SP, Brazil
%8 17-20 Oct. 1999
%I Sociedade Brasileira de Computação
%J Porto Alegre
%S Proceedings
%K trees, aerial images
%X This work describes ongoing research towards finding a methodology to extract information about trees from aerial images. Examples of output are the approximate number of trees, the diameter and area of a tree, and the total green area. For regions with sparse trees, a method based on segmentation and border extraction is described. It works reasonable well segregating trees from the other components (buildings, etc.) For dense tree areas, two feature baased methods, one using simple template-matching and the other one using a Backpropagation nerual-network classifier, are described. Both methods work reasonable well if a good sample of trees is provided.
%3 077-82347989.pdf