CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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Hits 21 to 40 of 565

_id 2005_037
id 2005_037
authors Côté, Pierre, Léglise, Michel and Estévez, Daniel
year 2005
title Virtual Architecture as Representation for Creative Design Process - Through a Collaborative eDesign Studio
source Digital Design: The Quest for New Paradigms [23nd eCAADe Conference Proceedings / ISBN 0-9541183-3-2] Lisbon (Portugal) 21-24 September 2005, pp. 37-45
summary Using Virtual Architecture (VA) as a general scheme for representations to sustain the reflection activities involved in the design process can help students to initiate creative design ideas. Because of its implicit abstract nature, VA can be used, to represent original ideas or processes, or well-known architectural theories to articulate design ideas. Furthermore, VA as a mean of expression, turn out to be a source of inspiration for students who perceive it as medium with very few limits with which to develop, explore and express their design intuitions. A recent collaborative edesign studio experience is reported to illustrate the benefit observed. Using three examples out of ten student projects, we show how designs and design process have been characterized by those virtual representations. In fall semester 2004, the edesign studio took place between the Schools of Architecture of Toulouse and Université Laval in Québec. VA was both an academic and a studio topic at Laval while the other school students had a traditional design task to tackle, namely the rehabilitation of Chapou University Residences for students in Toulouse. Students from both schools composed each edesign team. In addition, three common architectural themes were web-documented and introduced to both classes: room, as defined by Louis Kahn: “a space which knows what it wants to be is a room”; color, as an architectural medium in dialectic with structure; and body-space relationships, as articulated by Gilles Deleuze and its projection to cyberspace. From the edesign studio results, we are arguing that virtual architecture should be looked at not only as new domain to be investigated by architects and taught in academic studios but also as a new medium of design to develop and explore design intuitions through virtual representations.
keywords Virtual Architecture; Virtual Representations; Medium; eDesign; Design by Collaboration
series eCAADe
email pierre.cote@arc.ulaval.ca
last changed 2012/11/23 18:17

_id sigradi2004_175
id sigradi2004_175
authors Diana Rodríguez Barros
year 2004
title Modelos urbanos virtuales y lecturas hipermediales [Virtual Urban Models and Hypermedia Readings]
source SIGraDi 2004 - [Proceedings of the 8th Iberoamerican Congress of Digital Graphics] Porte Alegre - Brasil 10-12 november 2004
summary The urban virtual models are complex environments where interactive modelization and visualization systems have developed high advances, making possible they applications in many different purposes, by expert and non-expert users. Is interesting, in hypermedial reading, to recognise and to evaluate the advantages and obstacles to examine a 2D-3D-4D-5D model. In that direction is presented an exploratory study of preexperimental design, in which is investigated the impacts and influences in non-expert users, that the presence and use of interactive strategies of navigation, selection and manipulation, produces in the results and affects the attitudes with regard to the possibilities of understanding and integration of information and in the confusion and cognitive overflow. The objective is to contribute in the definition and systematization of methodologys and design patterns about interfaces and interactions in three-dimensional hypermedia, from theoretical, operating and pedagogical approach.
keywords Hypermedial / virtual model /interaction/ interface / exploratory study
series SIGRADI
email dibarros@mdp.edu.ar
last changed 2016/03/10 08:50

_id 2836
id 2836
authors Dunham, Douglas
year 2004
title COMPUTER DESIGN OF REPEATING HYPERBOLIC PATTERNS
source Proceedings of the Fourth International Conference of Mathematics & Design, Special Edition of the Journal of Mathematics & Design, Volume 4, No.1, pp. 83-90.
summary From antiquity, humans have created 2-dimensional art on flat surfaces (the Euclidean plane) and on surfaces of spheres. However, it wasn't until about 50 years ago that designers have created art in the third "classical geometry", the hyperbolic plane. Inspired by a diagram from the mathematician H. S. M. Coxeter, the graphic artist M. C. Escher became the first person to design such patterns, performing all the needed constructions laboriously by hand. In order to exhibit the true hyperbolic nature of such art, the pattern must exhibit symmetry and repetition. It seems natural to use a computer to avoid the tedious hand constructions performed by Escher. This was our goal: to design and implement a computer program to create repeating hyperbolic patterns.
series other
type normal paper
email ddunham@d.umn.edu
last changed 2005/04/07 10:49

_id acadia08_072
id acadia08_072
authors Frumar, Jerome
year 2008
title An Energy Centric Approach to Architecture: Abstracting the material to co-rationalize design and performance
source Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 72-81
summary This paper begins by exploring matter as an aggregated system of energy transactions and modulations. With this in mind, it examines the notion of energy driven form finding as a design methodology that can simultaneously negotiate physical, environmental and fabrication considerations. The digital workspace enables this notion of form finding to re-establish itself in the world of architecture through a range of analytic tools that algorithmically encode real world physics. Simulating the spatial and energetic characteristics of reality enables virtual “form generation models that recognize the laws of physics and are able to create ‘minimum’ surfaces for compression, bending [and] tension” (Cook 2004). The language of energy, common in engineering and materials science, enables a renewed trans-disciplinary dialogue that addresses significant historic disjunctions such as the professional divide between architects and engineers. Design becomes a science of exploring abstracted energy states to discover a suitable resonance with which to tune the built environment. ¶ A case study of one particular method of energy driven form finding is presented. Bi-directional Evolutionary Structural Optimization (BESO) is a generative engineering technique developed at RMIT University. It appropriates natural growth strategies to determine optimum forms that respond to structural criteria by reorganizing their topology. This dynamic topology response enables structural optimization to become an integrated component of design exploration. A sequence of investigations illustrates the flexibility and trans-disciplinary benefits of this approach. Using BESO as a tool for design rather than purely for structural optimization fuses the creative approach of the architect with the pragmatic approach of the engineer, enabling outcomes that neither profession could develop in isolation. The BESO case study alludes to future design processes that will facilitate a coherent unfolding of design logic comparable to morphogenesis.
keywords Energy; Form-Finding; Morphogenesis; Optimization; Structure
series ACADIA
last changed 2009/02/26 07:39

_id 2005_771
id 2005_771
authors Gavrilou, Evelyn, Bourdakis, Vassilis and Charitos, Dimitris
year 2005
title Documenting the Spatial Design of an Interactive Multisensory Urban Installation
source Digital Design: The Quest for New Paradigms [23nd eCAADe Conference Proceedings / ISBN 0-9541183-3-2] Lisbon (Portugal) 21-24 September 2005, pp. 771-778
summary The paper documents the design and implementation of an interactive multi-sensory environment (DETOUR) created by the interdisciplinary group VE_Design for an international open-air exhibition in Athens, Greece during the summer of 2004. The paper describes the creative process followed throughout the project and registers how computers, sensors and effectors have been utilised to either facilitate the creation of electronically mediated experiences or support the design. The architectural concept of the multi-sensory installation is analyzed in relation to its potential for creating communicative experiences as well as addressing physical form simulations. Notions such as ephemeral structures, parasites, social space, game as art and communication are discussed. The body – space interaction is investigated, enabling the team to elaborate on a modular construction. Finally, the impact of the work is discussed on the basis of recorded observations by visitors.
keywords Interactive Multi-Sensory Environment; Ephemeral Space; Public Art;Embodied Spatial Experience; Simulation of Physical Form.
series eCAADe
email V.Bourdakis@uth.gr
last changed 2012/11/23 18:17

_id avocaad_2003_08
id avocaad_2003_08
authors Gernot Pittioni
year 2003
title A World of Networks - Global and Local Impacts
source LOCAL VALUES in a NETWORKED DESIGN WORLD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Stellingwerff, Martijn and Verbeke, Johan (Eds.), (2004) DUP Science - Delft University Press, ISBN 90-407-2507-1.
summary As a couple of years ago the use of computers slowly entered studios of architecture, the development of operating systems actually enables everybody to control even bigger networks within studios or offices. Recently these local networks started to get networked themselves. Interactions between local design partners involve a large variety of problems• different CAD-systems• different versions of the same CAD-system• different methods of transfer• different security ideas• different levels of technical knowledge In the course of extension to a global level these problems in the first approach have been growing dramatically, involving additionally language and mentality problems. But in the outcome the exchange of documents and ideas improves in speed, quality and accuracy or this will at least happen in the near future.Global networking offers a great challenge, we have to give this matter a big deal of efforts to earn the values and results, which may be achieved.
keywords Architecture, Local values, Globalisation, Computer Aided Architectural Design
series AVOCAAD
email pittioni@pittioni.de
last changed 2006/01/16 20:38

_id 109caadria2004
id 109caadria2004
authors Hyun-Ah Choi, Han-Jong Jun
year 2004
title A Fundamental Study on Analysis of Interaction By Sketches and Acts of Creative Design in Architectural Design Process - Focusing on Emergent Shapes
source CAADRIA 2004 [Proceedings of the 9th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] Seoul Korea 28-30 April 2004, pp. 133-144
summary One of the characteristics of design process in the area of architectural design is the use of a number of different types of sketches. Designers place a great deal of emphasis on sketches often because it is thought to be associated with innovation and creativity. The emphasis has come to drive researchers to increasingly focus on sketch and its role in designing. Firstly, this paper is to review closely related researches that have looked at the role of sketches in design process. And then, this study is to review analogy and emergence that can be effective in facilitating creative design. Mutational emergent shapes are introduced in the last stage.
series CAADRIA
email hyuna7@unitel.co.kr
last changed 2004/05/20 16:37

_id avocaad_2003_22
id avocaad_2003_22
authors Jaroslaw Szewczyk
year 2003
title Statements for the conference workshop
source LOCAL VALUES in a NETWORKED DESIGN WORLD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Stellingwerff, Martijn and Verbeke, Johan (Eds.), (2004) DUP Science - Delft University Press, ISBN 90-407-2507-1.
summary A STATEMENT: Present and Anticipated State of Local and Global Information in Creative Work: In Writing, Composing, Designing and Drawing
keywords Architecture, Local values, Globalisation, Computer Aided Architectural Design
series AVOCAAD
email jarsz@cksr.ac.bialystok.pl
last changed 2006/01/16 20:38

_id 209caadria2004
id 209caadria2004
authors Ji-Hyun Lee and Wei-Feng Hong
year 2004
title POSTMODERN ARCHITECTURE VS. FENG-SHUI
source CAADRIA 2004 [Proceedings of the 9th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] Seoul Korea 28-30 April 2004, pp. 335-346
summary We start with two paradigms, Postmodernism and FengShui, which seem to be no commonalities between them –western and eastern, new and old–. In both, however, they deeply root in the essence of “place” interweaved culture and social interaction with physical design. Hence, this paper presents a particular viewpoint and method to examine the coherency between the two paradigms. In accordance with the evolution of information technology, a full of metaphoric phenomena and codes within Feng-shui and postmodern architecture is able to visualize by means of computational knowledge. This gives a flexible knowledge-based system to trigger captivating concepts, which are seeds of creative thought.
keywords Feng-shui, postmodern, context, knowledge-based system
series CAADRIA
type normal paper
email jihyun@yuntech.edu.tw
last changed 2004/05/22 09:17

_id ddss2004_d-157
id ddss2004_d-157
authors Krafta, R.
year 2004
title Space is the Machine, with a Ghost Inside
source Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) Developments in Design & Decision Support Systems in Architecture and Urban Planning, Eindhoven: Eindhoven University of Technology, ISBN 90-6814-155-4, p. 157-173
summary The purpose of this paper is to report efforts towards the construction of a model for urban spatial dynamics simulation, based on multi-agents and space. The underlying idea is to have urban space producers and consumers operating in a two-layer, two-circuit model. The first layer holds urban space and its successive transformations; a second layer contains agents related to space; the first circuit simulates space production, and a second one simulates space consumption. Relationship between layers is represented as objective spatial features that agents are submitted to (the machine) and subjective meanings agents attach to each spatial feature (the ghost). While space works always in the same way, meanings vary according to each agent’s background and context. Relationships between circuits are represented by means of a market game in which producers try to maximize their profits by gambling with their risks, whereas consumers try to foresee the spatial distribution of local externalities that maximizes their utilities and investments. Urban Spatial Features are captured through centrality and land use patterns; every single agent’s action leads to changes in both patterns. Producers’ profit is a function of built form location. Consumers’ local externalities are concerned basically with present and future services. The model iteration is twofold: first it generates and allocates a number of built forms within a previously determined spatial system (a cellular matrix, for example), and second it allocates users to built forms. Population of users have its social profile and growth rate externally determined. Built form allocation is decided on the basis of a combination of profitXrisk perspectives. Users’ locational choice is supported by accessibility to services and present/future neighbourhood profile. Built form allocation works as parameter for users’ locational assessment, whereas users’ choices are used as parameters for developers. The model tends to adjust itself, in terms of quantities and types of built forms to be erected, although through a market lag of some iterations. Allocations are always made through weighted draws, so that mutations (non deterministic allocations) do occur.
keywords Urban Morphology, Urban Growth, Simulation
series DDSS
last changed 2004/07/03 20:13

_id ijac20032110
id ijac20032110
authors Kvan, Thomas
year 2004
title The Dual Heritage of CAAD Research
source International Journal of Architectural Computing vol. 2 - no. 1
summary The development of research in computer aided architectural design has evolved in the context of architectural design. A review of Tom Maver's work is undertaken from the perspective of his shortest paper, CAAD's Seven Deadly Sins. In that paper cautions were given to researchers. Here these cautions are interpreted in the context of the dual heritage of our field in science and creative arts. An examination of Tom Maver's own work suggests that these sins are counterbalanced by a like number of virtues and it is suggested that these are demonstrated in the corpus of his work and the community he has fostered.
series journal
email tkvan@arch.hku.hk
more http://www.multi-science.co.uk/ijac.htm
last changed 2007/03/04 06:08

_id 2004_256
id 2004_256
authors Lai, Ih-Cheng
year 2004
title Interactive Patterns for Associating Ideas during Brainstorming
source Architecture in the Network Society [22nd eCAADe Conference Proceedings / ISBN 0-9541183-2-4] Copenhagen (Denmark) 15-18 September 2004, pp. 256-261
summary Idea association is an important behavior to generate diverse ideas during brainstorming. Through three linking principles (similarity, contrast and contiguity), idea association involves a dynamic linking process between ideas and design cases. Based on the knowledge representation issue-concept-form proposed by Oxman (1993), three interactive patterns between ideas and design cases are investigated. Finally, some computational mechanisms for supporting the linkage of idea association are discussed.
keywords Idea Association, Linking, Case Representation, Case Based Reasoning, Brainstorming
series eCAADe
last changed 2004/09/18 06:45

_id sigradi2004_061
id sigradi2004_061
authors Leonardo Combes
year 2004
title Arquitectura otra [Architecture "Another"]
source SIGraDi 2004 - [Proceedings of the 8th Iberoamerican Congress of Digital Graphics] Porte Alegre - Brasil 10-12 november 2004
summary This paper describes experimental work carried out in a special architectural design studio. It runs methods that are different of the traditional teaching in the .normal. studios. The entire working time is separated in two characteristic periods: .Creative tasks. and .Design tasks.. The purpose is to clarify the design process assuming that generating ideas has quite different characteristics than leading them to the real world. Creative work means imagination whose limits are difficult to establish. In fact imagination hates imposed limits. Conversely the final task of design is to determine limits. These two opposed forces are conciliated in the design process. Ideas as well as physical objects need special means of representation. These are discussed in order to illustrate the trends underlying this particular design studio. (Architecture, design, teaching, digital representation)
series SIGRADI
email labsist@herrera.unt.edu.ar
last changed 2016/03/10 08:54

_id acadia04_100
id acadia04_100
authors Liapi, Katherine
year 2004
title A computer Based System for the Design and Fabrication of Tensegrity Structures
source Fabrication: Examining the Digital Practice of Architecture [Proceedings of the 23rd Annual Conference of the Association for Computer Aided Design in Architecture and the 2004 Conference of the AIA Technology in Architectural Practice Knowledge Community / ISBN 0-9696665-2-7] Cambridge (Ontario) 8-14 November, 2004, 100-109
summary Tensegrity structures are composed of tension compression com­ponents, where the compression components (bars) are discontinu­ously enclosed within continuous tensile components (cables). From an engineering point of view, a tensegrity structure is characterized by geometric non-linearity and large displacements under loading. Therefore, its prestressed shape and deformation under loading are the result of the combined effect of the geometric parameters that determine the initial configuration of the structure, the level of pre­stress applied to cables, and the material properties of the compo­nent members of the structure. A method for generating the initial geometric configuration of tensegrity structures composed of tenseg­rity units and a parametric expression of this geometry have already been developed. A novel technology that makes possible the construction of tensegrity structures from the on-site assembly of deployable tensegrity units, which are fur­nished with a simple mechanism that permits bar-elongation, and, as a result, an increase of the prestress applied to the cables of each unit, is also under development. Also under development is a static analysis method that takes into account the above method for prestressing cables. This paper discusses the features of a system that supports the combined geometric and structural design of tensegrity structures, and integrates a graphical interface to display: a) models of initial geometry, b) geometry of the structure after prestress and loading are applied, and c) magnitude of forces applied to the structure’s component members (bars and cables). The system also provides numerical data to be used in component fabrication, and is therefore expected to become a very valuable tool for the design and construction of tensegrity structures.
series ACADIA
last changed 2010/05/16 07:09

_id 59ff
id 59ff
authors MacPherson, Deborah L.
year 2004
title PERCEIVING DESIGN IN VIRTUAL SPACES
source Proceedings of the Fourth International Conference of Mathematics & Design, Special Edition of the Journal of Mathematics & Design, Volume 4, No.1, pp. 271-281.
summary People used to illustrate our ideas by hand and now we use machines. But we still can’t search through all the world’s drawings and ideas by proportion, aesthetic, and a list of measurements and space requirements. Suppose there was a new way to communicate with our machines that would allow design and other subtle relationships to be measured, compared and perceived using the design intent and viewers interpretations themselves as descriptions? In the future, using a system like this will eventually create so many designs, interpretations, patterns and spaces to choose from the questions become: how would design be perceived within these virtual spaces; and how might our aesthetics change due to this new dialogue with machines?
series other
type normal paper
email deborah.macpherson@cox.net
last changed 2005/04/07 13:41

_id ascaad2004_paper15
id ascaad2004_paper15
authors Mallasi, Z.
year 2004
title Identification and Visualisation of Construction Activities’ Workspace Conflicts Utilising 4D CAD/VR Tools
source eDesign in Architecture: ASCAAD's First International Conference on Computer Aided Architectural Design, 7-9 December 2004, KFUPM, Saudi Arabia
summary This work addresses the problem arising on all construction sites: the occurrence of workspace interference between construction activities. From a site space planning context, this problem can lead to an inevitable roadblock to the progress of the scheduled construction operations. In real situations, when the spatial congestions occur, they could reduce productivity of workers sharing the same workspace and may cause health and safety hazard issues. The aim of this paper is on presenting a computer-based method and developed tool to assist site managers in the assignment and identification of workspace conflicts. The author focuses on the concept of ‘visualising space competition’ between the construction activities. The concept is based on a unique representation of the dynamic behaviour of activity workspace in 3D space and time. An innovative computer-based tool dubbed PECASO (Patterns Execution and Critical Analysis of Site-space Organisation) has been developed. The emerging technique of 4D (3D + time) visualisation has been chosen to yield an interesting 4D space planning and visualisation tool. A multi-criteria function for measuring the severity of the workspace congestions is designed, embedding the spatial and schedule related criteria. The paper evaluates the PECASO approach in order to minimise the workspace congestions, using a real case study. The paper concludes that the PECASO approach reduces the number of competing workspaces and the conflicting volumes between occupied workspace, which in turn produces better assessment to the execution strategy for a given project schedule. The system proves to be a promising tool for 4D space planning; in that it introduces a new way of communicating the programme of work.
series ASCAAD
email z.mallasi@tees.ac.uk
last changed 2007/04/08 17:47

_id ijac20042307
id ijac20042307
authors Manes, Sergio
year 2004
title Architectural Representation Software: a Design Tool
source International Journal of Architectural Computing vol. 2 - no. 3, 403-422
summary In the last decades, design processes have been approached with absolutely new representation techniques: digital media. This new tool was naturally incorporated to the architectural task not only in universities but also in Architectural offices. However, their evolution and utilization have been so sudden that their impact on the design object could not be properly assessed. Simply they stated to be used by translating analogical representation techniques into the digital media. In the Latin American context, in which the media interaction paradigm has not yet been completely established within universities and teachers, this work presents an exploration of the underlying ideas contained in the architectural representation software, as well as a series of exercises intended to teach how to use digital media as a design tool, instead of teaching how to use them as a mere representation tool.
series journal
more http://www.multi-science.co.uk/ijac.htm
last changed 2007/03/04 06:08

_id caadria2005_b_5c_b
id caadria2005_b_5c_b
authors Martin Tamke
year 2005
title Crossing The Media
source CAADRIA 2005 [Proceedings of the 10th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] New Delhi (India) 28-30 April 2005, vol. 2, pp. 364-374
summary An open-ended, diversified and critical approach of architectural design, using different form of ideas representation might offer best chances to gain new spatial solutions. Today’s most forward architects and designer are aware of this and make full use of physical and digital media during the process of design. During the summer term 2004 the experiment ‘Crossing the Media’ took place at the Technical University of Braunschweig. The main goal of this practical oriented seminar has been the exploration of the interface between analogue and digital Media within the design process. Both techniques, analogue and digital, were used in an experimental way and their interaction and adaptability in the field of architecture was analyzed. The work examines the possibility of a consistent integration of digital and physical representation in a design process and the individual benefits of each. In order to achieve this, we made up a stringent line of digital-analogue and analogue-digital (DA-AD) Technologies for our design experiment. During the examination we focused especially on the creative potential of the techniques used, their interaction and adaptability in the field of architecture. Hence one of the goals of the occupation with the digital analogue interfaces was the examination of the emerging shift within the structure during the process, the imprints of technology. This paper describes the workflow and tools that were used, our practical experiences with analogue digital interface and the emerging questions and impulses to architects future work and theory. The discovered limitations and consequences of interfaces between the analogue and digital realm of design and their creative chances will be revealed. We share results which we think are helpful to others, and we highlight areas where further research is necessary.
series CAADRIA
email m.tamke@tu-bs.de
last changed 2005/04/30 01:30

_id 791e
id 791e
authors Monreal, Amadeo; Jacas, Joan
year 2004
title COMPUTER AIDED GENERATION OF ARCHITECTURAL TYPOLOGIES
source Proceedings of the Fourth International Conference of Mathematics & Design, Special Edition of the Journal of Mathematics & Design, Volume 4, No.1, pp. 73-82.
summary The work we present may be considered as the consolidation of a methodology that was already outlined in the paper presented in the second M&D congress held in San Sebastian (1998). We establish that, in architectural design, the computer is only used in the last step in order to achieve the traditional Euclidean design in a more precise and comfortable way and to improve the quality of the handmade designs. Our proposal consists in modifying the process from the very beginning of the creative act. That is, when the design conception is born. If we want to obtain the maximum benefit of the computer possibilities, we ought to support this conception by means of a language tuned with the mentioned tool. Due to the fact that the internal language used by the computer for producing graphics is mathematical, we must incorporate, in some way, this language in the codification of the creative process. In accordance with this setting, we propose a mathematical grammar for the design based on the construction of modulated standard mathematical functions. This grammar is developed independently from the graphical software and it is specified only when a particular computer program for the effective generation on the graphical objects is selected.
series other
type normal paper
email joan.jacas@upc.es
last changed 2005/04/07 10:49

_id acadia16_140
id acadia16_140
authors Nejur, Andrei; Steinfeld, Kyle
year 2016
title Ivy: Bringing a Weighted-Mesh Representations to Bear on Generative Architectural Design Applications
source ACADIA // 2016: POSTHUMAN FRONTIERS: Data, Designers, and Cognitive Machines [Proceedings of the 36th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-77095-5] Ann Arbor 27-29 October, 2016, pp. 140-151
summary Mesh segmentation has become an important and well-researched topic in computational geometry in recent years (Agathos et al. 2008). As a result, a number of new approaches have been developed that have led to innovations in a diverse set of problems in computer graphics (CG) (Sharmir 2008). Specifically, a range of effective methods for the division of a mesh have recently been proposed, including by K-means (Shlafman et al. 2002), graph cuts (Golovinskiy and Funkhouser 2008; Katz and Tal 2003), hierarchical clustering (Garland et al. 2001; Gelfand and Guibas 2004; Golovinskiy and Funkhouser 2008), primitive fitting (Athene et al. 2004), random walks (Lai et al.), core extraction (Katz et al.) tubular multi-scale analysis (Mortara et al. 2004), spectral clustering (Liu and Zhang 2004), and critical point analysis (Lin et al. 20070, all of which depend upon a weighted graph representation, typically the dual of a given mesh (Sharmir 2008). While these approaches have been proven effective within the narrowly defined domains of application for which they have been developed (Chen 2009), they have not been brought to bear on wider classes of problems in fields outside of CG, specifically on problems relevant to generative architectural design. Given the widespread use of meshes and the utility of segmentation in GAD, by surveying the relevant and recently matured approaches to mesh segmentation in CG that share a common representation of the mesh dual, this paper identifies and takes steps to address a heretofore unrealized transfer of technology that would resolve a missed opportunity for both subject areas. Meshes are often employed by architectural designers for purposes that are distinct from and present a unique set of requirements in relation to similar applications that have enjoyed more focused study in computer science. This paper presents a survey of similar applications, including thin-sheet fabrication (Mitani and Suzuki 2004), rendering optimization (Garland et al. 2001), 3D mesh compression (Taubin et al. 1998), morphin (Shapira et al. 2008) and mesh simplification (Kalvin and Taylor 1996), and distinguish the requirements of these applications from those presented by GAD, including non-refinement in advance of the constraining of mesh geometry to planar-quad faces, and the ability to address a diversity of mesh features that may or may not be preserved. Following this survey of existing approaches and unmet needs, the authors assert that if a generalized framework for working with graph representations of meshes is developed, allowing for the interactive adjustment of edge weights, then the recent developments in mesh segmentation may be better brought to bear on GAD problems. This paper presents work toward the development of just such a framework, implemented as a plug-in for the visual programming environment Grasshopper.
keywords tool-building, design simulation, fabrication, computation, megalith
series ACADIA
type paper
email ksteinfe@berkeley.edu
last changed 2016/10/24 11:12

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