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Dissertations / Theses on the topic 'Tree crown'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Wang, Yingping. "Crown structure, radiation absorption, photosynthesis and transpiration." Thesis, University of Edinburgh, 1988. http://webex.lib.ed.ac.uk/homes/wang88.html.

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2

Lai, Can. "Factors affecting tree crown allometries and consequences on forest structure." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3427298.

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Tree crown architecture is crucial for light capture, it determines the competitive advantage over neighbouring trees and related to the demographic process of forests. Geographic variation of crown architecture is impressive: from flat-top crown in tropical regions to narrow-deep in boreal regions. However, the assessment of crown traits across geographic areas is still lacking. In this research, I would like to figure out the relationship of crown properties with size by the simply effective power law method, namely allometry. With the aim of quantifying the relationship at broad scales, w

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3

Liu, Haijian. "Automated Treetop Detection and Tree Crown Identification Using Discrete-return Lidar Data." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc271858/.

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Accurate estimates of tree and forest biomass are essential for a wide range of applications. Automated treetop detection and tree crown discrimination using LiDAR data can greatly facilitate forest biomass estimation. Previous work has focused on homogenous or single-species forests, while few studies have focused on mixed forests. In this study, a new method for treetop detection is proposed in which the treetop is the cluster center of selected points rather than the highest point. Based on treetop detection, tree crowns are discriminated through comparison of three-dimensional shape signat

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4

Kim, Sooyoung. "Individual tree species identification using LIDAR-derived crown structures and intensity data /." Thesis, Connect to this title online; UW restricted, 2008. http://hdl.handle.net/1773/5548.

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5

Horváth, Péter. "The "gaz of circles" model and its application to tree crown extraction." Nice, 2007. http://www.theses.fr/2007NICE4068.

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We present the gas of circles (GOC) model, which is a tool to describe a set of circles with an approximately fixed radius. The model is based on the recently introduced `higher-order active contour'(HOAC) framework. For certain ranges of the parameters, the model creates stable circles with an approximately fixed radius instead of networks. We show how to determine this set of parameters. The general gas of circle model has many potential applications in varied domains, but it suffers from a drawback: the local minima corresponding to circles can trap the gradient descent algorithm, thus prod

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6

Sadeghinaeenifard, Fariba. "Automated Tree Crown Discrimination Using Three-Dimensional Shape Signatures Derived from LiDAR Point Clouds." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157521/.

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Discrimination of different tree crowns based on their 3D shapes is essential for a wide range of forestry applications, and, due to its complexity, is a significant challenge. This study presents a modified 3D shape descriptor for the perception of different tree crown shapes in discrete-return LiDAR point clouds. The proposed methodology comprises of five main components, including definition of a local coordinate system, learning salient points, generation of simulated LiDAR point clouds with geometrical shapes, shape signature generation (from simulated LiDAR points as reference shape sign

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7

Suzuki, Arata. "Crown architecture development and reproduction in dioecious small tree, Eurya japonica Thunb. (Theaceae)." Kyoto University, 2002. http://hdl.handle.net/2433/149893.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第9601号<br>農博第1229号<br>新制||農||840(附属図書館)<br>学位論文||H14||N3633(農学部図書室)<br>UT51-2002-G359<br>京都大学大学院農学研究科森林科学専攻<br>(主査)教授菊澤喜八郎, 教授杉浦明, 教授藤崎憲治<br>学位規則第4条第1項該当

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8

Lang, Anne Christina [Verfasser], and Goddert von [Akademischer Betreuer] Oheimb. "The role of tree diversity for individual tree growth, crown architecture and branch demography / Anne Christina Lang. Betreuer: Goddert von Oheimb." Lüneburg : Universitätsbibliothek der Leuphana Universität Lüneburg, 2012. http://d-nb.info/1034147935/34.

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9

Doruska, Paul F. "Methods for Quantitatively Describing Tree Crown Profiles of Loblolly pine (Pinus taeda L.)." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/30638.

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Physiological process models, productivity studies, and wildlife abundance studies all require accurate representations of tree crowns. In the past, geometric shapes or flexible mathematical equations approximating geometric shapes were used to represent crown profiles. Crown profile of loblolly pine (<I>Pinus taeda</I> L.) was described using single-regressor, nonparametric regression analysis in an effort to improve crown representations. The resulting profiles were compared to more traditional representations. Nonparametric regression may be applicable when an underlying parametric m

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10

Erikson, Mats. "Segmentation and classification of individual tree crowns : in high spatial resolution aerial images /." Uppsala : Centre for Image Analysis, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/s320.pdf.

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11

Bayala, Jules. "Tree crown pruning as a management tool to enhance the productivity of parklands in West Africa." Thesis, Bangor University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247299.

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12

Harikumar, Aravind. "Advanced methods for tree species classification and biophysical parameter estimation using crown geometric information in high density LiDAR data." Doctoral thesis, Università degli studi di Trento, 2019. https://hdl.handle.net/11572/369121.

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The ecological, climatic and economic influence of forests makes them an essential natural resource to be studied, preserved, and managed. Forest inventorying using single sensor data has a huge economic advantage over multi-sensor data. Remote sensing of forests using high density multi-return small footprint Light Detection and Ranging (LiDAR) data is becoming a cost-effective method to automatic estimation of forest parameters at the Individual Tree Crown (ITC) level. Individual tree detection and delineation techniques form the basis for ITC level parameter estimation. However SoA techniqu

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13

Harikumar, Aravind. "Advanced methods for tree species classification and biophysical parameter estimation using crown geometric information in high density LiDAR data." Doctoral thesis, University of Trento, 2019. http://eprints-phd.biblio.unitn.it/3782/1/PhD_Thesis_Harikumar.pdf.

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The ecological, climatic and economic influence of forests makes them an essential natural resource to be studied, preserved, and managed. Forest inventorying using single sensor data has a huge economic advantage over multi-sensor data. Remote sensing of forests using high density multi-return small footprint Light Detection and Ranging (LiDAR) data is becoming a cost-effective method to automatic estimation of forest parameters at the Individual Tree Crown (ITC) level. Individual tree detection and delineation techniques form the basis for ITC level parameter estimation. However SoA techniq

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14

Yagi, Takanobu. "Variations in Current-year Shoot Properties in Cool-temperate Tree Species in Japan : Functional Differentiation for Foliage-maintenance and Crown-expansion." Kyoto University, 2000. http://hdl.handle.net/2433/151582.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第8526号<br>農博第1135号<br>新制||農||806(附属図書館)<br>学位論文||H12||N3429(農学部図書室)<br>UT51-2000-J35<br>京都大学大学院農学研究科林学専攻<br>(主査)教授武田博清, 教授菊沢喜八郎, 教授大畠誠一<br>学位規則第4条第1項該当

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15

Pandey, Sudip. "Assessment of forest community response to environmental variability by using an integrated approach from tree-ring anatomy to allometry of tree structures." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3426839.

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Climate change is the biggest challenge of this century and is exerting pressure on high altitude forests. Increase in global temperature along with the rise in CO2 in the atmosphere may change the structure and function of treeline species. Several studies showed the range shifts of trees towards higher altitude affecting growth, mortality, and composition of the forest. There are few studies carried out in Nepalese Himalaya at tree ring level but still miss the inter and intra annual information. To enhance our knowledge, the main objectives of the thesis is to understand the response of tre

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16

Key, Thomas Lee. "An evaluation of the relative value of spectral and phenological information for tree crown classification of digital images in the eastern deciduous forest /." Morgantown, W. Va. : [West Virginia University Libraries], 1998. http://etd.wvu.edu/templates/showETD.cfm?recnum=107.

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Thesis (M.A.)--West Virginia University, 1998.<br>Title from document title page. Document formatted into pages; contains viii, 51 p. : col. ill., col. map. Vita. Includes abstract. Includes bibliographical references (p. 32-34).

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17

Masaitis, Gediminas. "The Potential of Hyperspectral Imaging to Detect Tree Species and Evaluate Their Condition." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2013~D_20131218_133828-62231.

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For the first time in Lithuania the foliage spectral reflectance properties of common tree species were investigated using hyperspectral imaging. The methodological outline was formulated and the procedures of practical hyperspectral imaging application were developed to stimulate the progress of hyperspectral remote sensing in Lithuanian forestry. Information extracted from foliage hyperspectral reflectance data was used to accurately determine forest tree species and the provenances of Scots Pine trees. The satisfactory results of determination of Scots Pine crown defoliation and the concent

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18

Engel, Markus [Verfasser], Uta [Gutachter] Berger, Goddert von [Gutachter] Oheimb, and Winfried [Gutachter] Kurth. "The effects of tree crown plasticity on the structure and dynamics of near-natural beech forests : an individual-based modeling approach / Markus Engel ; Gutachter: Uta Berger, Goddert von Oheimb, Winfried Kurth." Dresden : Technische Universität Dresden, 2020. http://d-nb.info/1227202075/34.

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19

森岡, 昇., Noboru MORIOKA, 稔. 近藤, Minoru KONDO, 謙治小木曽 та Kenji KOGISO. "伐採木樹冠が残存木樹冠の間を通過するときの最大抵抗力と通過仕事". 名古屋大学農学部付属演習林, 1996. http://hdl.handle.net/2237/8723.

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20

Rathjens, Richard G. "PLANTING DEPTH OF TREES - A SURVEY OF FIELD DEPTH, EFFECT OF DEEP PLANTING, AND REMEDIATION." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1243869972.

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21

Hansen, Christopher Felix. "Lidar Remote Sensing Of Forest Canopy Structure: An Assessment Of The Accuracy Of Lidar And Its Relationship To Higher Trophic Levels." ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/356.

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Light detection and ranging (LiDAR) data can provide detailed information about three-dimensional forest horizontal and vertical structure that is important to forest productivity and wildlife habitat. Indeed, LiDAR data have been shown to provide accurate estimates to forest structural parameters and measures of higher trophic levels (e.g., avian abundance and diversity). However, links between forest structure and tree function have not been evaluated using LiDAR. This study was designed and scaled to assess the relationship of LiDAR to multiple aspects of forest structure and higher trophic

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22

Lindh, Magnus. "Evolution of Plants : a mathematical perspective." Doctoral thesis, Umeå universitet, Institutionen för matematik och matematisk statistik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-119458.

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The Earth harbors around 300 000 plant species. The rich and complex environment provided by plants is considered a key factor for the extraordinary diversity of the terrestrial fauna by, for example, providing food and shelter. This thesis contributes to the understanding of these questions by investigating how the interplay of physiology, demography, and evolution gives rise to variation and diversity in fundamental plant traits. This will help us answer questions such as: How has this amazing diversity of plant species emerged? Which mechanisms maintain diversity? How are plant strategies a

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23

Lacy, Philip Alan Physical Environmental &amp Mathematical Sciences Australian Defence Force Academy UNSW. "Burning Under Young Eucalypts." Awarded by:University of New South Wales - Australian Defence Force Academy. Physical, Environmental & Mathematical Sciences, 2009. http://handle.unsw.edu.au/1959.4/43663.

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Fuels management in eucalyptus plantations is essential to minimise the impact of wildfire. Prescribed burning has the potential to reduce the fuel hazard in plantations, but is not routinely conducted due to concerns relating to tree damage. Through a series of experimental burns, the issues of tree damage are addressed and minimum tree sizes are recommended that are capable of withstanding the effects of low to moderate intensity fires. Data was collected between 2005 and 2007 over six sites, two species, and three age classes. Tree response results came from multiple measurements of over 17

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24

Young, Deborah, and Michael Matheron. "Control of Phytophthrowa Root and Crown Rot of Apple Trees." College of Agriculture, University of Arizona (Tucson, AZ), 1990. http://hdl.handle.net/10150/215717.

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25

Matheron, Michael, Deborah Young, and Joe Matejka. "Root and Crown Rot of Apple Trees Caused by Phytophthora." College of Agriculture, University of Arizona (Tucson, AZ), 1990. http://hdl.handle.net/10150/215738.

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26

Novotný, Jan. "Matematické metody segmentace obrazu pro dálkový průzkum Země." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-234262.

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Segmentation of an image into individual tree crowns is a key step in the processing of remotely sensed data for forestry practice. The doctoral thesis gives a broad overview of this topic. It comprehends theoretical context from mathematical point of view and defines basic terms from airborne imaging and laser scanning. Mathematical methods of tree detection are focused on a robust adaptation to the actual conditions in a region of interest. A novel approach of crown area delineation is introduced, it combines a seeded region growing technique with an active contour as a crown boundary repres

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27

Hailemariam, Temesgen. "Leaf area distribution and alternative sampling designs for hybrid spruce tree crowns." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ27153.pdf.

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28

Kratz, Jakob, and Viktor Luthman. "Comparison of spatial partitioning data structures in crowd simulations." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302340.

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This report investigates how the construction and query time of multiple spatial partitioning data structures is impacted by spatial distribution of and number of agents in a crowd simulation. In addition a method is investigated for updating the data structures less frequently at the cost of increasing the radius queried, without affecting the correctness of the queries. The data structures are tested in a simulation using a Boids model and update and query times are measured. It is found that the performance of the grid is better than the quad tree and the kd- tree for low number of agents,

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29

Wicks, T. J. "Phytophthora crown rot of almond and cherry trees : pathogens, rootstock and scion susceptib[i]lity and control /." Title page, table of contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phw637.pdf.

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30

Adeline, Karine. "Classification des matériaux urbains en présence de végétation éparse par télédétection hyperspectrale à haute résolution spatiale." Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0056/document.

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La disponibilité de nouveaux moyens d’acquisition en télédétection, satellitaire (PLEIADES, HYPXIM), aéroportée ou par drone (UAV) à très haute résolution spatiale ouvre la voie à leur utilisation pour l’étude de milieux complexes telles que les villes. En particulier, la connaissance de la ville pour l’étude des îlots de chaleur, la planification urbaine, l’estimation de la biodiversité de la végétation et son état de santé nécessite au préalable une étape de classification des matériaux qui repose sur l’utilisation de l’information spectrale accessible en télédétection hyperspectrale 0,4-2,5

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31

Doruska, Paul F. "Modeling the diameter and locational distributions of branches within the crowns of loblolly pine trees." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09192009-040505/.

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32

Frischbier, Nico. "Untersuchungen zur einzelbaumverursachten kleinräumigen Variabilität und regenhöhenbasierten Dynamik des Bestandesniederschlages am Beispiel zweier Buchen-Fichten-Mischbestände." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-94870.

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Trifft herabfallender Regen auf Waldflächen, so wird dieser Niederschlag umverteilt zu Interzeption, Stammabfluss, durchfallenden und abtropfenden Niederschlag. Besonders hohe Stammablaufmengen im Kronenzentrum und markante Abtropfstellen am Kronenrand einzelner Baumarten lassen sich zudem nur erklären, wenn am jeweiligen Messplatz unter Baumkronen eine weitere Niederschlagskomponente zugelassen wird, mit der laterale Wasserbewegungen innerhalb der expliziten Einzelbaumkrone beschrieben und bilanziert werden (lateraler [Zu- oder Ab-]Fluss). Ziel dieser Arbeit war es deshalb, der niederschlagsa

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33

Pape, Rolf. "Effects of thinning on wood properties of Norway spruce on highly productive sites /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5622-3.pdf.

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34

Valančius, Jonas. "Paliktų biologinei įvairovei medžių Šilutės miškų urėdijoje plyno kirtimo biržėse vertinimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20090114_154457-37812.

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Magistro darbe tiriama paliktų biologinei įvairovei medžių Šilutės miškų urėdijoje plyno kirtimo biržėse būklė. Darbo objektas- Šilutės miškų urėdijos plyno kirtimo biržėse palikti biologinei įvairovei medžiai. Darbo tikslas- ištirti 2003- 2007 metų laikotarpyje biologinei įvairovei paliktų medžių Šilutės miškų urėdijos plyno kirtimo biržėse būklę. Darbo metodika- surinkti informaciją apie Šilutės miškų urėdijoje plynų kirtimų biržėse ir jose biologinei įvairovei paliktus medžius. Iš kiekvienų 2003-2007 metais plynais kirtimais kirstų biržių buvo pasirinkta 10 biržių. Pasirinktose plyno kirtim

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35

Riyahi, Bakhtyari Hamid Reza. "Evaluation of the capability of QuickBird data for automatic delineation of individual tree crowns in sparse deciduous forests case-study in the Zagros region of Iran." Göttingen Cuvillier, 2010. http://d-nb.info/1001352114/04.

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36

Žiobaitė, Dalia. "Paliktų biologinei įvairovei medžių Prienų miškų urėdijos plyno kirtimo biržėse vertinimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2007. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_154028-07987.

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Magistro darbe tiriama paliktų biologinei įvairovei medžių Prienų miškų urėdijoje plyno kirtimo biržėse būklė. Darbo objektas – Prienų miškų urėdijos plyno kirtimo birž��s ir jose biologinei įvairovei palikti medžiai. Darbo tikslas – Įvertinti 2002-2006 matų laikotarpyje biologinei įvairovei paliktų medžių Prienų miškų urėdijos plyno kirtimo biržėse būklę. Darbo metodika – surinkta informacija apie Prienų miškų urėdijoje plynų kirtimų biržes ir jose biologinei įvairovei paliktus medžius. Iš kiekvienų 2002 – 2006 metais plynais kirtimais kirstų biržių buvo pasirinkta po 10 biržių. Pasirinktose

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37

Zhou, Jia. "Application de l’identification d’objets sur images à l’étude de canopées de peuplements forestiers tropicaux : cas des plantations d'Eucalyptus et des mangroves." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20214/document.

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La thèse s'inscrit dans l'étude de la structuration des forêts à partir des propriétés de la canopée telles que décrites par la distribution spatiale ou la taille des houppiers des arbres dominants. L'approche suivie est fondée sur la théorie des Processus Ponctuels Marqués (PPM) qui permet de modéliser ces houppiers comme des disques sur images considérées comme un espace 2D. Le travail a consisté à évaluer le potentiel des PPM pour détecter automatiquement les houppiers d'arbres dans des images optiques de très résolution spatiale acquises sur des forêts de mangroves et des plantations d'Euc

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38

Hossain, Md Amjad. "DESIGN OF CROWD-SCALE MULTI-PARTY TELEPRESENCE SYSTEM WITH DISTRIBUTED MULTIPOINT CONTROL UNIT BASED ON PEER TO PEER NETWORK." Kent State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=kent1606570495229229.

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39

Beyer, Robert Maria [Verfasser], Paul-Henry [Akademischer Betreuer] [Gutachter] Cournède, Hans [Akademischer Betreuer] [Gutachter] Pretzsch, Youcef [Gutachter] Mammeri, and Anja [Gutachter] Rammig. "Spatial Leaf Density-based Modelling of Teleonomic Crown Dynamics of Crops and Trees / Robert Maria Beyer ; Gutachter: Youcef Mammeri, Anja Rammig, Hans Pretzsch, Paul-Henry Cournède ; Paul-Henry Cournède, Hans Pretzsch." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1121206727/34.

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40

Klinka, Karel, Pal Varga, Louise E. M. de Montigny, and Christine Chourmouzis. "The structure of single- and mixed-species, second-growth stands of Western hemlock and Western redcedar." Forest Sciences Department, University of British Columbia, 2001. http://hdl.handle.net/2429/708.

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The structure of a forest stand is characterized by: (a) species composition, (b) age, (c) size (diameter and height), and (d) spatial (horizontal and vertical) arrangement of the trees. Depending on the species, site, and disturbance history, the stand structure varies with time, thus providing a snapshot of a particular development stage. Research on growth and stand structure has shown that the spatial distribution of trees is one of the key determinants of stand productivity. Forest inventories and ecological surveys carried out in British Columbia (BC) have shown that the structure o

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41

Zegarra, Cavero-Blumenfeld Fernanda, and Huamán Katya Valeria Meza. "Comparación in vitro de la adaptación marginal de coronas unitarias de porcelana vitrocerámica elaboradas con tres sistemas de procesado." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653925.

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Objetivo: Comparar in vitro la adaptación marginal de coronas unitarias de porcelana vitrocerámica elaboradas con tres sistemas de procesado. Materiales y métodos: El presente estudio fue de tipo experimental in vitro. La muestra estuvo conformada por 69 coronas de porcelana vitrocerámica fabricadas con los sistemas: CAD-CAM, inyección de porcelana y condensación sobre muñón refractario. Para la evaluación de la discrepancia marginal vertical se realizó un registro fotográfico con una cámara digital y un lente macroscópico de 100 milímetros. Las imágenes fueron medidas digitalmente (ImageJ

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42

Novotný, Jan. "Multispektrální analýza obrazových dat." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228360.

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The airborne hyperspectral remote sensing is used as an approach to monitor actual state of environmental components. This thesis covers priority treatment to analyse of hyperspectral data with the aim of a tree crowns delineation. Specific algorithm applying adaptive equalization and the Voronoi diagrams is designed to subdivide a forest area into individual trees. A computer program executes the algorithm and allows testing it on real data, checking and analyzing the results.

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"Capturing tree crown attributes from high resolution remotely sensed data." UNIVERSITY OF WASHINGTON, 2009. http://pqdtopen.proquest.com/#viewpdf?dispub=3345744.

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Ma, Shu-Min, and 馬淑敏. "Tree Crown Detection and Delineation in High Spatial Resolution Remotely Sensed Image." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/07937341506587426074.

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碩士<br>國立中央大學<br>土木工程研究所<br>94<br>The survey of forest resources is an important task for the management and protection of the forest. Traditionally, such an essential task is heavily dependent on the labor-intensive ground survey. Although numerous state-of-the-art equipments have been developed to improve the efficiency of the ground survey, a lot of researches have been using remote sensing images for the forest survey, especially in the domain of the automatic detection of individual tree and the delineation of tree crown. The type of tree in the image not only contains individual tree,

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Miklas, Vojtěch. "Evaluation of tree crown detection with various spatial resolutions of aerial images." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-190595.

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This work reviewed various tree detection and delineation algorithms and developed another one for ESRI ArcGIS Desktop software. This algorithm which employs the principles of local maxima filtering and region growing technique was enhanced by successfully applying NDVI index. Consequently, this algorithm was tested on 11 sample plots. These plots were located in the forest stand 187 C 10a (according to Forest Management Plan 2013 - 2022) in the forest section Proklest which belongs to the forest district Habrůvka in The Training Forest Enterprise Masaryk Forest Křtiny. The results were conseq

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Lin, Chung-Liang, and 林俊良. "Estimation of Urban Tree Crown Volume based on Integrated Techniques of Remote Sensing." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/15746350455781049322.

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碩士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>98<br>Abstract Nowadays, using Airborne LiDAR technology to investigate forest is very popular. The 3D accurate data of terrain or plants are very important for the management of forestry and natural resources. The height and density of trees are also important. However, how to get those data is very difficult for traditional technology. Airborne LiDAR may overcome these problems. By LiDAR technology the ground area under tree-crown and height of tree can be simultaneously observed. Based on the response pulse of laser wave, by data processing and analyzing,

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Pollock, Richard. "The automatic recognition of individual trees in aerial images of forests based on a synthetic tree crown image model." Thesis, 1996. http://hdl.handle.net/2429/6135.

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The thesis of this work is that individual tree crowns can be automatically recognized in monocular high spatial resolution optical images of scenes containing boreal or cool temperate forests in a leaved state. The thesis was advanced by developing and testing an automatic tree crown recognition procedure that is based on a model of the image formation process at the scale of an individual tree. This model provides a means of applying specific scene and image formation knowledge to the recognition task. The procedure associates instances of a three-dimensional shape description with loc

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Moorthy, Inian. "Tree crown structural characterization : a study using terrestrial laser scanning and 3D radiative transfer modeling /." 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR51751.

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Thesis (Ph.D.)--York University, 2009. Graduate Programme in Earth and Space Science.<br>Typescript. Includes bibliographical references (leaves 168-181). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR51751

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Chen, Szuwei, and 陳思瑋. "Differentiation Of Tree Architectural And Crown Traits In Two Hardwood Forests Under Distinct Disturbance Regimes." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/68007460360536417784.

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碩士<br>東海大學<br>生命科學系<br>100<br>The impact of disturbance on the ecosystem characteristics has been an important topic in ecological studies. In Taiwan, typhoons are perhaps the most important disturbance agent in forest ecosystems. The meteorological records of typhoon raid during past 20 years show distinct typhoon disturbance regime in different regions of Taiwan. Such heterogeneity in disturbance regime provides ideal environment for investigating the importance of typhoon disturbance in shaping the community structure of forests. Recently, various plant functional traits are widely measured

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Ke, Wan-Ting, and 柯菀庭. "Modeling tree height growth and height to crown base recession for major coniferous species in Taiwan." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/04623950049575643878.

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碩士<br>國立宜蘭大學<br>森林暨自然資源學系碩士班<br>103<br>Tree height equations and height to crown base equations predict values over time in modern individual tree model of forest growth simulation, and then tree crown ratio at each period can be calculated by these predicted values. It can also be used to provide measures of the effect of competition on tree vigor. Tree height increment and tree crown recession equations are the main components of the individual tree growth and yield simulator, which can provide high-resolution and detailed information for forest management. The purpose of this study was to b

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