Cumincad : CUMINCAD Papers : Search Results

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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_id	fda4
authors	Jalkanen, Janne
year	2000
title	Building a spatially immersive display - HUTCAVE
source	Helsinki University of Technology, Espoo, Finland
summary	A spatially immersive display is a display that surrounds the user, thus removing or alleviating many disadvantages the common virtual reality systems, such as head-mounted displays have. The most common example of these spatially immersive displays is the CAVE, "CAVE Automatic Virtual Environment", first built at University of Illinois, in 1993. It combines a large field-of-view with high-resolution images and a high frame refresh rate. In this work, the current Virtual Reality (VR) and Virtual Environment (VE) systems are examined, and then the CAVE construction is presented. Principles of stereo vision are explained and current methods of obtaining both autostereoscopic and stereopsis-based vision are reviewed. Aspects of different projection methods, screens, mirrors, projectors, tracking equipment, and computing systems are examined. Also, recent work in CAVE audio, so far neglected in research, is presented. Some of the mathematics is also explained, since in most CAVE-systems some sort of optical folding is necessary. Two cases of CAVE construction are presented, both at the Helsinki University of Technology. The first is a single-wall installation built as a temporary system, and the second is a four-sided CAVE at a new location, superseding the temporary installation. Finally the conclusions are presented, both from the process management point of view, and from the technical point of view, examining the good and bad points of the chosen solutions.
series	thesis:MSc
last changed	2003/02/12 22:37

_id	ecaade2022_368
id	ecaade2022_368
authors	Das, Avishek, Brunsgaard, Camilla and Madsen, Claus Brondgaard
year	2022
title	Understanding the AR-VR Based Architectural Design Workflow among Selected Danish Architecture Practices
source	Pak, B, Wurzer, G and Stouffs, R (eds.), Co-creating the Future: Inclusion in and through Design - Proceedings of the 40th Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2022) - Volume 1, Ghent, 13-16 September 2022, pp. 381–388
doi	https://doi.org/10.52842/conf.ecaade.2022.1.381
summary	Virtual reality (VR) and augmented reality (AR) have been proposed to be additional architectural design mediums for at least 25 years (Dagit, 1993). Despite rapid technical and technological development, it has not been adopted into architectural design practices as compared to academia and research. Surveys from the American Institute of Architects (AIA) and Royal Institutes of British Architects (RIBA) demonstrate the state of architectural practices; 72% of architects and 65% of architects respectively are not using any kind of virtual, augmented, or mixed reality in their practices(RIBA and Microsoft, 2018; Hampson, 2020). In this paper, the authors investigate the state of practices, issues, challenges, and opportunities of the utilization of virtual, augmented, and mixed realities in six architectural practices in the Danish context. Three of the practices are large architectural practices, one medium-sized practice specializing in institutional, healthcare and cultural architecture, and one firm designing private family houses, kindergartens, daycares and places for people with disability and, one experimental design studio. All these practices have used VR/AR in their projects to various degrees. In recent years Danish architectural practices have been involved in various VR/AR-based exhibitions, demonstrations, and tool developments to promote the usage of the same in design practice. Through a set of qualitative interviews with personnel from key architectural practices, the authors would like to demonstrate the present state of practices. The investigation explores the usage of VR and AR in Danish architecture practices by identifying challenges and opportunities regarding skill levels, architectural typology, use cases, toolchains, and workflow and shows similarities and differences between traditional and VR-based design processes. The main findings show how VR/AR-based visualization helps architects to perceive spatiality and also ushers creativity through immersion and overlays.
keywords	Virtual Reality, Augmented Reality, Architectural Design Practice, Denmark
series	eCAADe
email
last changed	2024/04/22 07:10

_id	c05c
authors	Hovestadt, Ludger
year	1993
title	A4 Digital Building: Extensive Computer Support for Building Design, Construction, and Management
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 405-421
summary	The integrated design, construction, and management of buildings are described as being of unlimited complexity. The data structures required to support these tasks cannot be predefined and have- to be worked out during the design process. An instrument that integrates weakly and strongly structured data is necessary. A4 proposes - as a minimal structuring mechanism - the position of information in a dataspace. It offers diverse additional and optional structuring mechanisms. Examples from different domains show the particular strengths of the A4 integration model.
keywords	Architecture, Intelligent Building, CAD, Multi-Media, Hypermedia, Active Objects, Virtual Reality, Multi-User, Expert System, Case-Based Reasoning, Communication, Data-Mining
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	cf2011_p093
id	cf2011_p093
authors	Nguyen, Thi Lan Truc; Tan Beng Kiang
year	2011
title	Understanding Shared Space for Informal Interaction among Geographically Distributed Teams
source	Computer Aided Architectural Design Futures 2011 [Proceedings of the 14th International Conference on Computer Aided Architectural Design Futures / ISBN 9782874561429] Liege (Belgium) 4-8 July 2011, pp. 41-54.
summary	In a design project, much creative work is done in teams, thus requires spaces for collaborative works such as conference rooms, project rooms and chill-out areas. These spaces are designed to provide an atmosphere conducive to discussion and communication ranging from formal meetings to informal communication. According to Kraut et al (E.Kraut et al., 1990), informal communication is an important factor for the success of collaboration and is defined as ‚Äúconversations take place at the time, with the participants, and about the topics at hand. It often occurs spontaneously by chance and in face-to-face manner. As shown in many research, much of good and creative ideas originate from impromptu meeting rather than in a formal meeting (Grajewski, 1993, A.Isaacs et al., 1997). Therefore, the places for informal communication are taken into account in workplace design and scattered throughout the building in order to stimulate face-to-face interaction, especially serendipitous communication among different groups across disciplines such as engineering, technology, design and so forth. Nowadays, team members of a project are not confined to people working in one location but are spread widely with geographically distributed collaborations. Being separated by long physical distance, informal interaction by chance is impossible since people are not co-located. In order to maintain the benefit of informal interaction in collaborative works, research endeavor has developed a variety ways to shorten the physical distance and bring people together in one shared space. Technologies to support informal interaction at a distance include video-based technologies, virtual reality technologies, location-based technologies and ubiquitous technologies. These technologies facilitate people to stay aware of other‚Äôs availability in distributed environment and to socialize and interact in a multi-users virtual environment. Each type of applications supports informal interaction through the employed technology characteristics. One of the conditions for promoting frequent and impromptu face-to-face communication is being co-located in one space in which the spatial settings play as catalyst to increase the likelihood for frequent encounter. Therefore, this paper analyses the degree to which sense of shared space is supported by these technical approaches. This analysis helps to identify the trade-off features of each shared space technology and its current problems. A taxonomy of shared space is introduced based on three types of shared space technologies for supporting informal interaction. These types are named as shared physical environments, collaborative virtual environments and mixed reality environments and are ordered increasingly towards the reality of sense of shared space. Based on the problem learnt from other technical approaches and the nature of informal interaction, this paper proposes physical-virtual shared space for supporting intended and opportunistic informal interaction. The shared space will be created by augmenting a 3D collaborative virtual environment (CVE) with real world scene at the virtual world side; and blending the CVE scene to the physical settings at the real world side. Given this, the two spaces are merged into one global structure. With augmented view of the real world, geographically distributed co-workers who populate the 3D CVE are facilitated to encounter and interact with their real world counterparts in a meaningful and natural manner.
keywords	shared space, collaborative virtual environment, informal interaction, intended interaction, opportunistic interaction
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	1d5a
authors	Schnabel, M.A., Kvan, T., Kruijff, E. and Donath, D.
year	2001
title	The First Virtual Environment Design Studio
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 394-400
doi	https://doi.org/10.52842/conf.ecaade.2001.394
summary	Since 1993 schools of architecture all over the world conduct in various forms of Virtual Design Studio (VDS). They have become an established part of teaching design within the digital realm. They vary in task and structure, are purely text-based or include various forms of interactive, synchronous or asynchronous collaboration. However, ‘virtual’ always refers to the method of communication and exchange of design and ideas. Students have never designed within immersive virtuality. This paper describes the first successful attempt to conduct a Joint Design Studio, which uses Virtual Environment (VE) as tool of design and communication between the remote partners. This first VeDS focused on how architectural students make use of this particular different approach to design within immersive three-dimensional VEs. For example, the students created 3D-immersive design proposals, explored dependencies to textual description of initial intentions and communicated between local and remote team-partners in immersive VE as well as textbased communication-channels. The paper subsequently describes the VeDS, its set-up, realization and outcome. We discuss frameworks and factors influencing how architectural students communicate their proposals in immersive VeDS, and how this new approach of design studio enables new forms of design expressions.
keywords	Immersive Virtual Reality, Collaborative Design, Joint Design Studio, Preliminary Design
series	eCAADe
email
last changed	2022/06/07 07:57

_id	avocaad_2001_20
id	avocaad_2001_20
authors	Shen-Kai Tang
year	2001
title	Toward a procedure of computer simulation in the restoration of historical architecture
source	AVOCAAD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Nys Koenraad, Provoost Tom, Verbeke Johan, Verleye Johan (Eds.), (2001) Hogeschool voor Wetenschap en Kunst - Departement Architectuur Sint-Lucas, Campus Brussel, ISBN 80-76101-05-1
summary	In the field of architectural design, “visualization¨ generally refers to some media, communicating and representing the idea of designers, such as ordinary drafts, maps, perspectives, photos and physical models, etc. (Rahman, 1992; Susan, 2000). The main reason why we adopt visualization is that it enables us to understand clearly and to control complicated procedures (Gombrich, 1990). Secondly, the way we get design knowledge is more from the published visualized images and less from personal experiences (Evans, 1989). Thus the importance of the representation of visualization is manifested.Due to the developments of computer technology in recent years, various computer aided design system are invented and used in a great amount, such as image processing, computer graphic, computer modeling/rendering, animation, multimedia, virtual reality and collaboration, etc. (Lawson, 1995; Liu, 1996). The conventional media are greatly replaced by computer media, and the visualization is further brought into the computerized stage. The procedure of visual impact analysis and assessment (VIAA), addressed by Rahman (1992), is renewed and amended for the intervention of computer (Liu, 2000). Based on the procedures above, a great amount of applied researches are proceeded. Therefore it is evident that the computer visualization is helpful to the discussion and evaluation during the design process (Hall, 1988, 1990, 1992, 1995, 1996, 1997, 1998; Liu, 1997; Sasada, 1986, 1988, 1990, 1993, 1997, 1998). In addition to the process of architectural design, the computer visualization is also applied to the subject of construction, which is repeatedly amended and corrected by the images of computer simulation (Liu, 2000). Potier (2000) probes into the contextual research and restoration of historical architecture by the technology of computer simulation before the practical restoration is constructed. In this way he established a communicative mode among archeologists, architects via computer media.In the research of restoration and preservation of historical architecture in Taiwan, many scholars have been devoted into the studies of historical contextual criticism (Shi, 1988, 1990, 1991, 1992, 1995; Fu, 1995, 1997; Chiu, 2000). Clues that accompany the historical contextual criticism (such as oral information, writings, photographs, pictures, etc.) help to explore the construction and the procedure of restoration (Hung, 1995), and serve as an aid to the studies of the usage and durability of the materials in the restoration of historical architecture (Dasser, 1990; Wang, 1998). Many clues are lost, because historical architecture is often age-old (Hung, 1995). Under the circumstance, restoration of historical architecture can only be proceeded by restricted pictures, written data and oral information (Shi, 1989). Therefore, computer simulation is employed by scholars to simulate the condition of historical architecture with restricted information after restoration (Potier, 2000). Yet this is only the early stage of computer-aid restoration. The focus of the paper aims at exploring that whether visual simulation of computer can help to investigate the practice of restoration and the estimation and evaluation after restoration.By exploring the restoration of historical architecture (taking the Gigi Train Station destroyed by the earthquake in last September as the operating example), this study aims to establish a complete work on computer visualization, including the concept of restoration, the practice of restoration, and the estimation and evaluation of restoration.This research is to simulate the process of restoration by computer simulation based on visualized media (restricted pictures, restricted written data and restricted oral information) and the specialized experience of historical architects (Potier, 2000). During the process of practicing, communicates with craftsmen repeatedly with some simulated alternatives, and makes the result as the foundation of evaluating and adjusting the simulating process and outcome. In this way we address a suitable and complete process of computer visualization for historical architecture.The significance of this paper is that we are able to control every detail more exactly, and then prevent possible problems during the process of restoration of historical architecture.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	5df5
authors	Fournier, A., Gunawan, A. and Romanzin, C.
year	1993
title	Common Illumination between Real and Computer Generated Scenes
source	Proceedings Graphics Interface '93, pp. 254-262, 1993
summary	The ability to merge a real video image (RVI) with a computer- generated image (CGI) enhances the usefulness of both. To go beyond "cut and paste" and chroma-keying, and merge the two images successfully, one must solve the problems of common viewing parameters, common visibility and common illumination. The result can be dubbed Computer Augmented Reality (CAR). We present in this paper techniques for approximating the common global illumination for RVIs and CGIs, assuming some elements of the scene geometry of the real world and common viewing parameters are known. Since the real image is a projection of the exact solution for the global illumination in the real world (done by nature), we approximate the global illumination of the merged image by making the RVI part of the solution to the common global illumination computation. The objects in the real scene are replaced by few boxes covering them; the image intensity of the RVI is used as the initial surface radiosity of the visible part of the boxes; the surface reflectance of the boxes is approximated by subtracting an estimate of the illuminant intensity based on the concept of ambient light; finally global illumination using a classic radiosity computation is used to render the surface of the CGIs with respect to their new environment and for calculating the amount of image intensity correction needed for surfaces of the real image. An example animation testing these techniques has been produced. Most of the geometric problems have been solved in a relatively ad hoc manner. The viewing parameters were extracted by interactive matching of the synthetic scene with the RVIs. The visibility is determined by the relative position of the "blocks" representing the real objects and the computer generated objects, and a moving computer generated light has been inserted. The results of the merging are encouraging, and would be effective for many applications.
series	other
last changed	2003/04/23 15:50

_id	4203
authors	Fraser, Michael
year	1993
title	Boundary Representation in Practice
source	Education and Practice: The Critical Interface [ACADIA Conference Proceedings / ISBN 1-880250-02-0] Texas (Texas / USA) 1993, pp. 173-185
doi	https://doi.org/10.52842/conf.acadia.1993.173
summary	There is an essential contradiction between the making of buildings or built environments in a threedimensional modeler and the graphic control of this process. Three-dimensional modeling is a constructive activity, in which solids are assembled as they would be in an actual structure; it benefits the designer. Presentation and documentation, on the other hand, are prescriptive activities that direct some of the construction and all the visualization and criticism of the proposal; they benefit the user and builder. A building while being designed can be visualized and criticized from its solid model, and the model can take a variety of forms depending on its part): computer-based, drawn in orthographic or perspective projection, constructed of cardboard or wood, or described narratively by means of text, programmatic data, performance model or animation. However, practicing architecture is the process of recording and communicating the decision making process and the contractual obligations that result. In actual practice, in contrast to the designer directed ideal, more participants are brought in sooner at the beginning of a project and with more publicity, which in turn means keeping more, not fewer, records. As the profession evolves, records of the string of design decisions will become more automated, more carefully structured and more retrievable. More buildings will be "tracked" and exposed to review in this way because public environmental sensitivity will improve. The communication between a single designer and his own thoughts will become less and less important.
series	ACADIA
last changed	2022/06/07 07:50

_id	50ce
authors	Baker, R.
year	1993
title	Designing the Future: The Computer Transformation of Reality
source	Thames and Hudson, Hong Kong
summary	A coffee table book on computer applications? Well, yes, because it does deal largely with matters of graphic design in architecture, fashion and textiles, painting, and photography; but it also has items which might be of interest in its sections on digital publication, typography, and electronic communication in general. It also seeks to discuss the way in which these applications may force us to change the way we think. Robin Baker writes in an unfortunately stiff and abstract manner about the impact computer programmes have had on the world of art and design, but the graphic images and extended picture captions help to keep the reader awake - even though the main text sometimes disappears for two or three double page spreads on end. There are also smatterings of pretentious art-world-speak about 'solving certain spatial problems' (in the design of curtain fabrics or teapots) and the introduction (inevitable?) of new jargon: 'shape grammar'(a list of so-called shape 'rules'), 'repurposing' (putting somebody else's work to new use) and 'genetic algorithms' (sculptural designs based on re-processed organic shapes - most of which look like stomach tumours). In his favour, Baker very generously credits students and commercial designers who have produced the effects he describes and illustrates so well. For writers, he sketches in the possibilities of Hypertext and Hypermedia and points to the future of Hyper publishing which he (and Rupert Murdoch)believes will be with us before the end of the century. He seems to have a good oversight of what is possible and practicable - though one wonders how up-to-date the view is when his book may have begun its life anything up to three years ago. He usefully points out that much new technology exists in or drags along with it the forms of earlier periods - so that in an age of electronic communication we still have printed books as a dominant cultural form. Maybe this is as it should be - but Baker makes a persuasive case for the claim that All This is Going to Change.
series	other
last changed	2003/04/23 15:14

_id	0ffe
authors	Bhat, R.R., Gauchel, J. and Van Wyk, S.
year	1993
title	Communication in Cooperative Building Design
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 481-493
summary	This paper addresses communication issues, which are crucial in any implementation of distributed design environments. Communication needs are specified and implemented in a prototype based on a modular knowledge-based approach for simulation of a distributed multi-user system. The results of these simulations are reported, which show communication to be scalable as the numbers of applications and the size of the design increases. Finally, the implications of the results on real distributed systems are discussed.
keywords	Building Design, Distributed Design Environments, Cooperative Design, Communication
series	CAAD Futures
last changed	2003/11/21 15:16

_id	ee23
authors	Bille, Pia
year	1994
title	A Study of Color
source	The Virtual Studio [Proceedings of the 12th European Conference on Education in Computer Aided Architectural Design / ISBN 0-9523687-0-6] Glasgow (Scotland) 7-10 September 1994, pp. 185-190
doi	https://doi.org/10.52842/conf.ecaade.1994.185
summary	Color courses are traditionally based on exercises carried out with either water color or colored paper. Use of the computer as a tool for teaching color theory and analyzing color in architecture was the topic of a course given at the School of Architecture and Planning at the State University of New York at Buffalo, USA where I was an exchange faculty in the academic year 1993/94. The course was structured into 3 topics: color theory, color perception and application of color.
series	eCAADe
email
last changed	2022/06/07 07:52

_id	c372
authors	Calvert, T., Bruderlin, A., Mah, S., Schiphorst, T. and Welman, C.
year	1993
title	The Evolution of an Interface for Choreographers Evolving Design
source	Proceedings of ACM INTERCHI'93 Conference on Human Factors in Computing Systems 1993 pp. 115-122
summary	This paper describes the evolution of the interface to Life Forms, a compositional tool for the creation of dance choreography, and highlights some of the important lessons we have learned during a six year design and implementation period. The lessons learned can be grouped into two categories: 1) Process, and 2) Architecture of the Interface. Our goal in developing a tool for choreography has been to provide computer-based creative design support for the conception and development of dance. The evolution was driven by feedback from the choreographers and users who were members of the development team, combined with our knowledge of current thinking on design and composition. Although the interface evolved in a relatively unconstrained way, the resulting system has many of the features that theoretical discussion in human interface design has projected as necessary. The Life Forms interface has evolved incrementally with one major discontinuity where adoption of a new compositional primitive required a completely new version. The choreography and composition of a dance is a complex synthesis task which has much in common with design. Thus, the lessons learned here are applicable to the development of interfaces to such applications as computer aided design.
keywords	Composition; Design; User Interface; Dance; Complexity; Choreography; Human Animation
series	other
last changed	2002/07/07 16:01

_id	08fc
authors	Darken, R.P. and Sibert, J.L.
year	1993
title	A toolset for navigation in virtual environments
source	Proceedings of the ACM User Interface Software and Technology, pp.157-165
summary	Maintaining knowledge of current position and orientation is frequently a problem for people in virtual environments. In this paper we present a toolset of techniques based on principles of navigation derived from real world analogs. We include a discussion of human and avian navigation behaviors and show how knowledge about them were used to design our tools. We also summarize an informal study we performed to determine how our tools influenced the subjects' navigation behavior. We conclude that principles extracted from real world navigation aids such as maps can be seen to apply in virtual environments.
series	other
last changed	2003/04/23 15:14

_id	8b38
authors	Do, Ellen Yi-Luen and Gross, Mark D.
year	1998
title	The Sundance Lab- "Design Systems of the Future"
source	ACADIA Quarterly, vol. 17, no. 4, pp. 8-10
doi	https://doi.org/10.52842/conf.acadia.1998.008
summary	The last thirty years have seen the development of powerful new tools for architects and planners: CAD, 3D modeling, digital imaging, geographic information systems, and real time animated walkthroughs. That’s just the beginning. Based on our experience with CAD tools, analysis of design practice, and an understanding of computer hardware and software, we’re out to invent the next generation of tools. We think architects should be shakers and makers, not just consumers, of computer aided design. We started the Sundance Lab (for Computing in Design and Planning) in 1993 with a few people and machines. We’ve grown to more than a dozen people (mostly undergraduate students) and a diverse interdisciplinary array of projects. We’ve worked with architects and planners, anthropologists, civil engineers, geographers, computer scientists, and electrical engineers. Our work is about the built environment: its physical form and various information involved in making and inhabiting places. We cover a wide range of topics – from design information management to virtual space, from sketch recognition to design rationale capture, to communication between designer and computer. All start from the position that design is a knowledge based and information rich activity. Explicit representations of design information (knowledge, rationale, and rules) enables us to engage in more intelligent dialogues about design. The following describes some of our projects under various rubrics.
series	ACADIA
email
last changed	2022/06/07 07:55

_id	ddss9207
id	ddss9207
authors	Gauchel, J., Hovestadt, L., van Wyk, S. and Bhat, R.R.
year	1993
title	Modular building models
source	Timmermans, Harry (Ed.), Design and Decision Support Systems in Architecture (Proceedings of a conference held in Mierlo, the Netherlands in July 1992), ISBN 0-7923-2444-7
summary	The development and implementation of a modular building model appropriate for computer aided design is described. The limitations of a unified building model with regard to concurrence and complexity in design is discussed. Current research suggests that to model real-world complexity, one must trade centralized control for autonomy. In this paper we develop a modular approach to building modelling that is based on object-oriented autonomy and makes it possible to define these models in a distributed concurrent manner. Such a modular and autonomous implementation brings inherent uncertainty and conflict which cannot be determined a priori.
series	DDSS
last changed	2003/08/07 16:36

_id	c044
authors	Heisserman, J. and Woodbury, R.
year	1993
title	Generating languages of solid models
source	Proceedings of Second ACM/IEEE Symposium on Solid Modeling and Applications, pp. 103-112
summary	This paper explores the automatic generation of solid models based on a grammatical paradigm. It presents a formalism, boundary solid grammars, for this purpose. Boundary solid grammars allow complex geometric conditions and operations to be expressed using a logical reasoning mechanism, the construction of powerful rules, and the description of grammars for generation of solid models that is appropriate for a variety of design domains. The formalism is well suited to computer implementation, and we demonstrate a prototype interpreter.
series	other
last changed	2003/04/23 15:50

_id	f485
authors	Kolarevic, Branko Radomir
year	1993
title	Geometric Relations as a Framework For Design Conceptualization
source	Harvard University, Graduate School of Design
summary	This study introduces geometric relations as a framework for design conceptualiza-tion-its key premise is that nothing is more fundamental in design than formation and discovery of relationships. The study attempts to establish a formal model for the development of a dynamic computer based graphic environment for design conceptualization that can recognize, record and maintain geometric design relations, merge "depictive" and "propositional", explicit and implicit in design, and provide a qualitatively different way to explore shape, dimension, and geometric organization. The study presents an approach to this task of formalization, and explores some of the fundamental issues pertinent to the subject, such as computability and applicability to the task of designing.Specifically, the study explores a relational description of shapes based on the concept of regulating or construction lines as an explicit formulation of a strategy to form generation and creative discovery, and proposes a lexicon of geometric relations to serve as a basis for composition. It hypothesizes that the construction lines can become much more useful and interesting when they are used not just as a rigid skeleton, but to regulate the behavior of a drawing and to maintain its essential structure as its parts are manipulated. As a consequence, designers could structure the behavior of the object being designed under future transformations; drawings could become seman-tically charged and could be manipulated in a semantically sophisticated fashion.The first chapter places the issue in the broader context by arguing that designers form implicit relational models of their designs. This contention is supported by introducing some of the relevant literature on mental imagery. Second chapter introduces design relations and in particular geometric relations, as a focal point of this study. A dynamic computer -based graphic context for design conceptualization is presented and evalu-ated in the next two chapters and conclusions are drawn. In the third chapter, the model's computability is demonstrated and evaluated through ReDRAW, a limited implementation of a relations based graphic system. In the fourth chapter, the model's applicability in design conceptualization is discussed and supported by examples.
series	thesis:PhD
email
more	http://www.gsd.harvard.edu/academic/asp/ddes/thesis_titles.html
last changed	2003/02/12 22:37

_id	cb3c
authors	Krishnamurti, Ramesh and Stouffs, Rudi
year	1993
title	Spatial Grammars: Motivation, Comparison, and New Results
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 57-74
summary	The paper starts by giving a motivation for studying grammars in design and is based on considerations of style, discovery, and constructive techniques. This paper goes on to survey a variety of spatial grammar formalisms from an implementation standpoint. For each formalism, the salient computational issues pertaining to rule application are discussed. Two aspects of shape grammars are considered in detail: (a) the conditions for reversibility of shape rules, and (b) the recognition of planar shapes.
keywords	Spatial Grammars, Shape Rules, Shape Recognition
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	a150
authors	Mahdavi, Ardeshir
year	1993
title	Open Simulation Environments: A “Preference-Based” Approach
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 195-214
summary	This paper introduces in conceptual, algorithmic and implementation terms, the notion of an "open" simulation environment as a "multidirectional" approach to computer-aided performance modelling. A "preference- based" formalization of design intentions/criteria is proposed to cope with the "ambiguity" problem through dynamic control of degrees of freedom of relevant design-related parameters during the interactive design process. A prototypical realization of an open simulation environment called "GESTALT' for simultaneous treatment (parametric manipulation) of various design and performance variables is demonstrated. Some preliminary results of computer-assisted generation of performance-responsive designs are presented.
keywords	Open Simulation Environments, Multidirectional Building Performance Simulation, Form-Function Mapping, Preference-Based Convergence Strategies, Preference-Index
series	CAAD Futures
email
last changed	2003/02/26 17:26

_id	aa67
authors	Pimentel K. and Teixeira K.
year	1993
title	Virtual Reality through the New Looking Glass
source	Windcrest, NY
summary	The revised edition of a 22,000-copy bestseller, much-praised as an authoritative, easy-to-understand overview of virtual reality. VR allows people to experience computer-generated worlds. Since the publication of the first edition of this book, VR has gone more mainstream. This edition covers the latest in VR applications, developments at VR companies, and up-to-the-minute information on Pentium-based VR systems.
series	other
last changed	2003/04/23 15:14

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