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On the Applicability of L-systems and Iterated Function Systems for Grammatical Synthesis of 3D Models [chapter]

Luis E. Da Costa, Jacques-Andr'e Landry
2003 Lecture Notes in Computer Science  
The objective of this project is to explore the feasibility of constructing a computer vision system able to synthesize the 3D model of a plant from a 2D representation.  ...  We are also presenting the extent of applicability of L-systems and iterated function systems for solving our problem, and present some ideas in pursue of a solution in this novel manner.  ...  The most commonly used models are called L-Systems, which are grammatical rewriting rules introduced in 1968 by Lindenmayer [2] to build a formal description of the development of a simple multicelular  ... 
doi:10.1007/3-540-44886-1_59 fatcat:upkhnrukorax5ai27i3mkckoem

A look at the visual modeling of plants using L-systems [chapter]

Przemyslaw Prusinkiewicz
1996 Lecture Notes in Computer Science  
of Calgary in the Fall of 1996.  ...  Many of the papers included in this review were sent to me directly by the authors, or brought to my attention by my colleagues.  ...  One The L-system model integrates these local rules into a global description of a vegetative segment.  ... 
doi:10.1007/bfb0033200 fatcat:33plmvs7dza2vjhjdpnncpeweq

The conservation of arboreal marsupials in the montane ash forests of the central highlands of Victoria, south-eastern Australia — VII. Modelling the persistence of Leadbeater's possum in response to modified timber harvesting practices

D.B. Lindenmayer, H.P. Possingham
1995 Biological Conservation  
and the implementation of a range of possible modified timber harvesting practices in two wood production blocks within the montane ash forests of the central highlands of Victoria, south-eastern Australia  ...  The results of our analyses revealed that under the existing conservation strategies there was a high probability of extinction over the next 150 years in both blocks.  ...  This study was confined to a limited comparison of some management options for the conservation of G. leadbeateri.  ... 
doi:10.1016/0006-3207(94)00121-6 fatcat:e3da32evl5agzomglrhivsbkyy

Indicators of Biodiversity for Ecologically Sustainable Forest Management

David B. Lindenmayer, Chris R. Margules, Daniel B. Botkin
2000 Conservation Biology  
Given our limited knowledge of both indicator species and structure-based indicators, we advocate the following four approaches to enhance biodiversity conservation in forests: (1) establish biodiversity  ...  The conservation of biological diversity has become one of the important goals of managing forests in an ecologically sustainable way.  ...  McComb, and several anonymous referees greatly improved earlier versions of this paper. We are indebted to G. Meffe for his encouragement of this work.  ... 
doi:10.1046/j.1523-1739.2000.98533.x fatcat:2t2hzcsf5nconewlbvauqnq2py

Computational models of plant development and form

Przemyslaw Prusinkiewicz, Adam Runions
2012 New Phytologist  
classes of models, which approach plant morphogenesis from the geometric and molecular perspectives.  ...  The use of computational techniques increasingly permeates developmental biology, from the acquisition, processing and analysis of experimental data to the construction of models of organisms.  ...  Acknowledgements 564 Acknowledgements We thank Brendan Lane and Jeyaprakash Chelladurai for the models of Coleochaete development in Fig. 4(a,b) , respectively, and Sahar Jazebi for the model of leaf  ... 
doi:10.1111/j.1469-8137.2011.04009.x pmid:22235985 fatcat:mzus4xup2vddzbiifthm2cgnsm

BUILT BY ALGORITHMS – STATE OF THE ART REPORT ON PROCEDURAL MODELING –

C. Schinko, U. Krispel, T. Ullrich, D. Fellner
2015 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
The idea of generative modeling is to allow the generation of highly complex objects based on a set of formal construction rules.  ...  Using these construction rules, a shape is described by a sequence of processing steps, rather than just by the result of all applied operations: Shape design becomes rule design.  ...  Early systems based on grammars were Lindenmayer systems, short L-systems, named after ARISTID LINDENMAYER (Prusinkiewicz and Lindenmayer, 1990) .  ... 
doi:10.5194/isprsarchives-xl-5-w4-469-2015 fatcat:yrrpa7rpgzh6nkv7tanwwi7id4

Modelling the inter-relationships between habitat patchiness, dispersal capability and metapopulation persistence of the endangered species, Leadbeater's possum, in south-eastern Australia

D. B. Lindenmayer, H. P. Possingham
1996 Landscape Ecology  
A computer simulation model was used to derive estimates of the probability of extinction of populations of the endangered species, Leadbeater's Possum (Gymnobelideus leadbeuteri), inhabiting ensembles  ...  Data on the habitat patches were extracted from forest inventory information that had been captured in the database of a Geographic Informa-VICTORIA  ...  Our work has benefited from discussions with a wide range of colleagues including Dr. R. Lacy Smith, Mr. M. Macfarlane, and many others too numerous to mention. Comments on the manuscript by Dr. B.  ... 
doi:10.1007/bf02093741 fatcat:bwbuaje6rzdizkhzxg23vjun54

A landscape-scale test of the predictive ability of a spatially explicit model for population viability analysis

Lindenmayer D.B., I. Ball, H.P. Possingham, M.A. Mccarthy, M.L. Pope
2001 Journal of Applied Ecology  
Given this, we have limited the description of major results to a brief summary of key outcomes of the four scenarios.  ...  These general themes were apparent from the comparisons of model output and actual abundance across all four scenarios, and thus irrespective of the level of model complexity invoked (i.e. the addition  ... 
doi:10.1046/j.1365-2664.2001.00558.x fatcat:v2p3no3p6fexfpkbhxeiieepue

Critical Ecological Roles, Structural Attributes and Conservation of Old Growth Forest: Lessons From a Case Study of Australian Mountain Ash Forests

David Lindenmayer, Elle Bowd
2022 Frontiers in Forests and Global Change  
Climate change is also a driver of old growth decline both through elevating the mortality of large old living trees and underpinning an increase in the frequency of high severity wildfire.  ...  We argue that a first step must be to cease all commercial logging in the Mountain Ash ecosystem to allow new cohorts of old growth forest to be recruited and thereby expand the extent of the old growth  ...  ACKNOWLEDGMENTS We thank Lachlan McBurney and the late Dave Blair for their outstanding field work in gathering some of the key datasets which underpin this manuscript.  ... 
doi:10.3389/ffgc.2022.878570 fatcat:mdwmxtraezedhdmuochn3ronru

Identifying the location of fire refuges in wet forest ecosystems

Laurence E. Berry, Don A. Driscoll, John A. Stein, Wade Blanchard, Sam C. Banks, Ross A. Bradstock, David B. Lindenmayer
2015 Ecological Applications  
Under extreme fire conditions, the distribution of fire refuges was limited to only extremely sheltered, fire-resistant regions of the landscape.  ...  We examined the relationship between the probability of fire refuge occurrence as predicted by an existing fire refuge model and fire severity experienced during a large wildfire.  ...  ROC was used over simple classification accuracy measures as it enabled the comparison of different classification systems (Hand and Till 2001) .  ... 
doi:10.1890/14-1699.1 pmid:26910959 fatcat:wsopwde6cfgullktwwojpyxyw4

A simple landscape-scale test of a spatially explicit population model: patch occupancy in fragmented south-eastern Australian forests

David B. Lindenmayer, Michael A. McCarthy, Hugh P. Possingham, Sarah Legge
2001 Oikos  
The results of a landscape-scale test of ALEX, a widely used metapopulation model for Population Viability Analysis (PVA), are described.  ...  ALEX produced a better fit to the field data than the naïve null model for the number of patches occupied by the laughing kookaburra.  ...  Lindenmayer and a wide range of other colleagues made extensive comments that improved the manuscript.  ... 
doi:10.1034/j.1600-0706.2001.920306.x fatcat:6zfly74vdrhupmiuefm5rejhtm

Page 318 of Mathematical Reviews Vol. 52, Issue 1 [page]

1976 Mathematical Reviews  
(pp. 75-87); Miroslav Novotny, On some problems concerning Pawlak’s machines p. 88-100); Arto Salomaa, Formal power series and growth ctions of Lindenmayer systems (pp. 101-113); Peter H.  ...  Boasson, On the largest full sub-AFL of the full AFL of context-free languages (pp. 194-198); Michal P, Chytil, On complexity of nondeterministic Turing machines computations (pp. 199-205); A. Ja.  ... 

Modelling the impacts of wildfire on the viability of metapopulations of the endangered Australian species of arboreal marsupial, Leadbeater's Possum

D.B. Lindenmayer, H.P. Possingham
1995 Forest Ecology and Management  
data on complex spatial arrangements of potentially suitable old growth habitat patches.  ...  This will be particularly important in some wood production forest blocks where there are only limited areas of old growth forest. (3) Patches that are set aside for the conservation of G. leadbeateri  ...  Acknowledgements This study was funded by a grant from the Australian Nature Conservation Agency and supported by the Victorian Department of Conservation and Natural Resources. B.  ... 
doi:10.1016/0378-1127(94)03480-k fatcat:jpkl64pejfh7zgtmd2gzaacvee

Induction of a marsupial density model using genetic programming and spatial relationships

P.A Whigham
2000 Ecological Modelling  
The ability of the learning system to express spatial relationships allows an improved predictive model to be developed, which is both parsimonious and understandable.  ...  However, most learning approaches are based on a propositional language for the development of models and therefore cannot express a wide range of possible spatial relationships that exist in the data.  ...  The anonymous reviewers are also acknowledged for assisting with the structure and direction of the final document.  ... 
doi:10.1016/s0304-3800(00)00248-9 fatcat:rlv6fthoc5hondgnqpw7kemwxq

Paradox, presumption and pitfalls in conservation biology: The importance of habitat change for amphibians and reptiles

Toby A. Gardner, Jos Barlow, Carlos A. Peres
2007 Biological Conservation  
amphibians), a lack of clear consensus regarding the consequences of many forms of habitat change with many studies reporting seemingly contradictory results, and a number of common limitations in sampling  ...  Research bias Herpetology Sampling A B S T R A C T The recent shift in research attention by amphibian biologists towards the causes of "enigmatic" population declines appears paradoxical given the almost  ...  T.A.G. is supported by a studentship from the Natural Environment Research Council (UK). This is publication number 9 of the Land-Use Change and Amazonian Biodiversity Project.  ... 
doi:10.1016/j.biocon.2007.04.017 fatcat:hbr3vhy6nrhkvegmgzkwqpn5o4
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