%0 Journal Article
%T Odvodenie 3-D modelu povrchu kor¨²n lesn¨¦ho porastu a detekcia kor¨²n stromov z leteckych sn¨ªmok s vysokym rozl¨ª en¨ªm
%A Tom¨¢  Bucha
%A Miroslav Juri
%A Jozef Vladovi
%J Lesn¨ªcky casopis - Forestry Journal
%@ 1338-4295
%D 2011
%I Versita
%R 10.2478/v10114-011-0008-9
%X This paper presents our proposal of a methodology procedure aimed at derivation 3-D forest canopy model from aerial multi-spectral stereo photos with a high resolution. Digital model is derived from photos using methods of digital photogrammetry. Furthermore, we used this model to determine the tree tops. For this purpose we created a system of criteria based on mathematical and logical relations. Tree tops represent the number of trees in the forest stand. We examined the accuracy of this classification on 5 areas. Errors of automated classification compared to terrestrial measurements ranged from underestimation by 41% to overestimation by 40%. It would require to incorporate a spectral information into the process of tree tops determination in order to improve the classification.
%K 3-D forest canopy model
%K digital photogrammetry
%K tree-top
%K aerial photos
%U http://versita.metapress.com/content/dw174570rx171226/?p=87f1ff0cd6e14d83aa5a7a44b15bf936&pi=0