标题：EVALUATION OF THE ORTHO-MOSAIC OBTAINED BY UNMANNED AERIAL VEHICLE TO DETERMINE SELECTED DENDROMETRIC VARIABLES OF TREES IN PINE STANDS
其他标题：OCENA ORTOMOZAIK OBRAZÓW UZYSKANYCH ZA POMOCĄ BEZZAŁOGOWEGO STATKU LATAJĄCEGO DO OKREŚLANIA WYBRANYCH CECH DENDROMETRYCZNYCH DRZEW W DRZEWOSTANACH SOSNOWYCH
期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2012
卷号：24
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：Multispectral images,acquired by digital non metric Sigma DP2 cameras,which were carried by Unmanned Aerial Vehicle - AVI-1 were used to produce orthoimages with 0.15 m ground resulution. Pictures were taken on 17 October 2011. Basing on them selected dendrometric characteristics of single scotch pine trees and their location were determined. Through field measurements both breast height diameters of tree's stems and crowns extends were established. These data were compared with crowns extends determined basing on crowns shapes digitized manually on orthoimages. Individual trees dendrometric characteristics were compared with crown width digitized on orthomozaic. Relationship between the characteristics of individual trees and crown segments obtained high values of determination up to R2=0,8. The results are satisfactory for forestry purposes in order to acquire accurate and fast information about wood volume. UAV images may be used to analyse effects of damage factors acting on small areas also.
其他摘要：Wielospektralne zdjęcia cyfrowe,uzyskane za pomocą niemetrycznych kamer cyfrowych przenoszonych przez bezzałogowy statek latający,wykorzystano do utworzenia ortomozaik o rozdzielczości przestrzennej 0.15 m. Na podstawie ortomozaik określono cechy dendrome
