Počet záznamů: 1  

Improved method for estimating tree crown diameter using high-resolution airborne data

  1. 1.
    0466501 - ÚVGZ 2017 RIV US eng J - Článek v odborném periodiku
    Brovkina, Olga - Latypov, I. Sh. - Cienciala, E. - Fabiánek, Tomáš
    Improved method for estimating tree crown diameter using high-resolution airborne data.
    Journal of Applied Remote Sensing. Roč. 10, č. 2 (2016), č. článku 026006. ISSN 1931-3195
    Grant CEP: GA MŠMT(CZ) LO1415
    Institucionální podpora: RVO:67179843
    Klíčová slova: mixed forest * crown size * airborne data * automatic processing
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 1.107, rok: 2016

    Automatic mapping of tree crown size (radius, diameter, or width) from remote sensing can provide a major benefit for practical and scientific purposes, but requires the development of accurate methods. This study presents an improved method for average tree crown diameter estimation at a forest plot level from high-resolution airborne data. The improved method consists of the combination of a window binarization procedure and a granulometric algorithm, and avoids the complicated crown delineation procedure that is currently used to estimate crown size. The systematic error in average crown diameter estimates is corrected with the improved method. The improved method is tested with coniferous, beech, and mixed-species forest plots based on airborne images of various spatial resolutions. The absolute (quantitative) accuracy of the improved crown diameter estimates is comparable or higher for both monospecies plots and mixed-species plots than the current methods. The ability of the improved method to produce good estimates for average crown diameters for monoculture and mixed species, to use remote sensing data of various spatial resolution and to operate in automatic mode promisingly suggests its applicability to a wide range of forest systems. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
    Trvalý link: http://hdl.handle.net/11104/0264783

     
     
Počet záznamů: 1  

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