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Ocena količine lesenega plavja v hudourniških strugah na podlagi multispektralnih posnetkov : magistrsko delo : magistrski študij - 2. stopnja = Assessment of large woody debris in river streams using multispectral images : M. Sc. Thesis : Master Study ProgrammesSenegačnik, GregorV nalogi smo z izvedbo metod daljinskega pridobivanja podatkov in njihove obdelave določali število kosov in volumen lesenega plavja v hudourniških strugah. Izdelan je bil pravi ortofoto posnetek ... območja, vegetacijski indeks NDVI, oblak točk in rastrski sloj digitalnega modela površja. S pomočjo pridobljenih slojev je bil izračunan volumen plavja s pomočjo štirih različnih metod, ki so temeljile na oblaku točk (minimalni konveksni trirazsežni objekt), rastrskih celicah in dolžinah ter širinah poligonov. Multispektralni posnetki so se izkazali za uporaben pripomoček pri ročnem načinu prepoznavanja lesenega plavja. Slabši rezultati so bili doseženi z metodo avtomatskega določanja lesenega plavja. Metoda je temeljila na klasifikacijah vegetacijskega indeksa NDVI, površin poligonov in klasifikaciji z metodo logistične regresije. Z metodo smo uspešno določili 46 kosov plavja od skupno 144. Iz oblaka točk smo volumen plavja ocenili s 33 % preveliko vrednostjo.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [G. Senegačnik], 2018Language - slovenianCOBISS.SI-ID - 5183142
Author
Senegačnik, Gregor
Other authors
Kobal, Milan
Topics
leseno plavje |
poplavna varnost |
fotogrametija |
brezpilotni letalniki |
vegetacijski indeks NDVI |
woody debris |
photogrametry |
flood safety |
unmanned aerial vehicles |
NDVI index
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Library | Call number – location, accession no. ... | Copy status |
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BF, Forestry Library, Ljubljana | BFGO Knjižnica MDB 71 IN: 12018000500 |
available - outside loan, loan period: 1 days |
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Senegačnik, Gregor | ![]() |
Kobal, Milan | 27605 |
Source: Personal bibliographies
and: SICRIS
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