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	c11a
authors	Campbell, D.A.
year	1998
title	VRML In Architectural Construction Documents: A Case Study
source	VRML 98 Monterey - Proceedings of the 1998 VRML Conference, pp. 115-120
summary	The Virtual Reality Modeling Language (VRML) and the World Wide Web (WWW) offer new opportunities to communicate an architect's design intent throughout the design process. We have investigated the use of VRML in the production and communication of construction documents, the final phase of architectural building design. A prototype, experimental Web site was set up and used to disseminate design data as VRML models and HTML text to the design client, contractor, and fabricators. In this paper, we discuss the way our construction documents were developed in VRML, the issues we faced implementing it, and critical feedback from the users of the Web space/site. Finally, we suggest ways to enhance the VRML specification which would enable its widespread use as a communication tool in the design and construction industries. CR Categories and Subject Descriptors: 1.3.5 [Computer Graphics]: Computational Geometry and Object Modeling - Curve, surface, solid, and object representations; 1.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism - Virtual Reality; J-6. [Computer Applications]: Computer-aided Engineering - Computer-aided design (CAD), Computer-aided manufacturing (CAM). Additional Keywords: architecture, construction, AEC, design, construction documentation, specifications, Internet, extranet, World Wide Web, VRML, virtual worlds, virtual environments
series	other
email
last changed	2003/04/23 15:50

_id	ddss9839
id	ddss9839
authors	Mahdavi, Ardeshir
year	1998
title	A Middle Way to Integration
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	Integration in computer-aided design denotes systematic incorporation of multiple domain applications within a unified computational design support environment. At one end of the spectrum of integration efforts, there is a top-down approach involving an all-encompassing maximal building representation. On the other end, there is bottom-up approach involving the ad hoc and as-needed production of translator and mediator routines to enable various existing applications to communicate with each other. This paper describes the development of a design support system which represents a middle way to integration: while it assumes that, at a fundamental level, some shared notation of the constitutive building entities and their spatial relationships is sine qua non, it assumes that this notation is not a primary necessity, but must be tested against the requirements of the "down-the-line" manipulators of the entities encapsulated by it.
series	DDSS
last changed	2003/08/07 16:36

_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
doi	https://doi.org/10.52842/conf.acadia.2016.140
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
last changed	2022/06/07 07:58

_id	094b
authors	O´Rourke, J.
year	1998
title	Computational Geometry in C
source	Cambridge: Cambridge University Press
summary	The first edition of this book is recognised as one of the definitive sources on the subject of Computational Geometry. In fact, O'Rourke has a long history in the field, has published many papers on the subject and is responsible for the computer graphics algorithms newsgroup which is where all computer geometers meet to discuss their ideas and problems. Typical problems discussed include how a polygon can be represented, how to calculate its area, how to detect if two polygons intersect and how to calculate the convex hull of a polygon. This leads onto more complex issues such as motion planning and seeing if a robot is able navigate from point x to point y without bumping into objects. The algorithms for these (and other) problems are discussed and many are implemented. In addition, many of the ideas are also discussed from the point of view of three and more dimensions. The only disappointment is that many problems are posed as questions at the end of the chapters and, as far as I could see, you cannot get the answers in the forms of a lecturer's supplement. This is fine in academia but not a lot of use for the commercial world. Due to the range of problems that incorporate computational geometry this book cannot be expected to answer every problem you might have. You will undoubtedly need access to other textbooks but I have been using the first edition of this book for many years and the second edition is a welcome addition to my bookshelf. If I was only allowed one computational geometry book then it would undoubtedly be this one.
series	other
last changed	2003/04/23 15:14

_id	ddss9856
id	ddss9856
authors	Suter, Georg and Mahdavi, Ardeshir
year	1998
title	Generation and communication of design information:a building performance simulation perspective
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	There is general agreement that the process of design and construction of buildings typically involves multiple players. This has been the impetus to develop concepts for computational environments that would supportcollaborative design. While there has been considerable progress with regard to hardware and electronic communication, the underlying representations of design ideas and artifacts have not kept pace with thisprogress. In this paper we deal with this problem not from a global conceptual perspective, but rather from the specific point of view of those designers who use design representation toward extraction and manipulation of specialized technical information. For example, engineers in various fields of building technology require a rich representation of building information in terms of geometry (with special focus on topology), materials, systems attributes, etc. We argue that the current building analysis tools do not operate on the basis of such rich informational representations. Instead the needed information is often assembled on an ad hoc basis from various non-integrated informational sources. We review three representations as they are implemented in commercial or research systems and explore their potential for communicating design information to computational building analysis tools. Based on this review, we describe desirable characteristics of more sophisticated building representations.
series	DDSS
last changed	2003/08/07 16:36

_id	6b49
authors	McMahon, C. and Browne, J.
year	1998
title	CADCAM: Principles, Practice and Manufacturing Management
source	2nd ed. Reading, Massachusetts: Addison-Wesley
summary	The application of computers to the product design and manufacturing process, known as CADCAM, is a successful and important technology which integrates the traditionally separate disciplines of Design and Manufacture. Presenting an ideal mix of theory, practice, and analysis along with real-life applications, this book offers an accessible introduction to CADCAM.
series	other
last changed	2003/04/23 15:14

_id	ddss9802
id	ddss9802
authors	Akin, O., Aygen, Z., Cumming, M., Donia, M., Sen, R. and Zhang, Y.
year	1998
title	Computational Specification of Building Requirements in theEarly Stages of Design
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	We have been exploring computational techniques to help building designers to specify design requirements during the early stages of design. In the past, little has been accomplished in this area either in terms of innovative computational technologies or the improvement of design performance.The prospect of improving design productivity and creating a seamless process between requirements specification and formal design are our primary motivations. This research has been conducted as partof a larger project entitled SEED (Software Environment to Support Early Phases in Building Design). SEED features an open-ended modular architecture, where each module provides support for a design activity that takes place in early design stages. Each module is supported by a database to store and retrieve information, as well as a user interface to support the interaction with designers. The module described in this paper, SEED-Pro (the architectural programming module of SEED), is a workingprototype for building design requirements specification. It can be used by other modules in SEED or by design systems in other domains, such as mechanical engineering, civil engineering, industrial designand electrical engineering. Our approach to SEED-Pro is divided into two phases: core, and support functionalities. The core functionalities operate in an interactive mode relying on a case-based approach to retrieve and adapt complex specification records to the problem at hand. The supportfunctionalities include the case-base, the data-base, and the standards processing environment for building specification tasks. Our findings indicate that SEED-Pro: (1) is a tool that structures the unstructured domain of design requirements; (2) enables the integration of design requirements with the rest of the design process, (3) leads to the creation of complex case-bases and (4) enables the observation of their performance in the context of real world design problems.
series	DDSS
last changed	2003/11/21 15:15

_id	abed
authors	Frazer, John Hamilton and Tang, Ming Xi
year	1998
title	Development of an Integrated Design System
doi	https://doi.org/10.52842/conf.caadria.1998.473
source	CAADRIA ‘98 [Proceedings of The Third Conference on Computer Aided Architectural Design Research in Asia / ISBN 4-907662-009] Osaka (Japan) 22-24 April 1998, pp. 473-482
summary	The School of Design in the Hong Kong Polytechnic University is developing advanced computer-based design systems by integrating Artificial Intelligence and evolutionary computing techniques with CAD/CAAD systems. Applications embrace architectural and environmental design as well as interior, industrial, fashion, graphic, and photographic design. The integration of the design systems developed in these domains provides a good basis for building a virtual design studio in collaboration with leading design research centres and institutions around the world. This virtual design studio is intended as a powerful computational environment for the integration of Asian cultural values with modern interdisciplinary design technologies.
keywords	AI, Generative Techniques, Evolutionary Techniques, Virtual Studio
series	CAADRIA
email
more	http://www.caadria.org
last changed	2022/06/07 07:50

_id	3a63
authors	Kaynak, O.
year	1998
title	Computational intelligence: soft computing and fuzzy-neuro integration with applications
source	Springer, Berlin
summary	Soft computing is a consortium of computing methodologies that provide a foundation for the conception, design, and deployment of intelligent systems and aims to formalize the human ability to make rational decisions in an environment of uncertainty and imprecision. This book is based on a NATO Advanced Study Institute held in 1996 on soft computing and its applications. The distinguished contributors consider the principal constituents of soft computing, namely fuzzy logic, neurocomputing, genetic computing, and probabilistic reasoning, the relations between them, and their fusion in industrial applications. Two areas emphasized in the book are how to achieve a synergistic combination of the main constituents of soft computing and how the combination can be used to achieve a high Machine Intelligence Quotient.
series	other
last changed	2003/04/23 15:14

_id	ddss9853
id	ddss9853
authors	Sidjanin, Predrag and Gerhardt, Waltraud
year	1998
title	A design tool for analysis and visual quality control of urbanenvironments supported by object databases
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	In the paper, the main concepts about a design tool supported by an object database system will be described. The design tool should improve architectural design with respect to analysis and improving existing and planned urban environments regarding several quality criteria, especially those associated with visual aspects. Preconditions for defining the design tool's purpose are the determination of the "well-situated" urban elements, their impact on cognitive mapping, and the exploitation of thisknowledge on cognitive mapping for the improvement of urban environments. Cognitive mapping is a kind of representation of schematic knowledge that a person has about familiar environments. A cognitive map is stored information or knowledge about the purpose and function of the environment. This leads to the conclusion that an urban environment design which takes of the process of cognitive mapping into consideration, will be experienced by most of the people in the same way. Investigationsof this process result in a theoretical model of elements of urban environments, their relationships and their dependencies. The theoretical platform of the tool is based on design theory, cognitive science andcomputer science. Design theory and cognitive science will be used to develop the theoretical model. This theoretical model together with computer science will be the basis for tool development. The tooluses a schematic representation of urban environment, based partly on Lynch's theory of "urban form". Lynch's theory is crucial for the tool because it explains almost all elements of urban environments. Systematic investigation of urban environments and their characteristics are important for theoretical modeling as well as for the later computational modeling of the tool. The main computational support for the tool will be provided by an object database system, which helps to represent and to handle all the urban elements with their properties and relationships, with their natural semantics. The information represented in the database will be used to analyze urban environments as well as to improve andcontrol their visual quality.
series	DDSS
email
last changed	2003/08/07 16:36

_id	ddss9860
id	ddss9860
authors	Vakalo, E-G. and Fahmy, A.
year	1998
title	A Theoretical Framework for the Analysis and Derivation of Orthogonal Building Plans and Sections
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	Architects are generally perceived as “Formgivers with an extraordinary gift” (Ackerman, 1980:12). Implicit in this statement is the belief that the operations that architects employ to compose their designs are the product of a creative faculty that is beyond the reach of rational discourse, and thereby cannot be subjected to logical investigation. This view is detrimental to the advancement of knowledge about architectural composition and adversely affects both practice and education in architecture. More specifically, it prevents the architectural community from acquiring of a more refined conception about how architects derive their designs. In contrast to this view, this study demonstrates that architectural form-making is amenable to logical analysis. In specific, this is to be done through a theoretical and computational framework that describe and explain the tasks involved in the making of orthogonal building plans and sections. In addition to illustrating the susceptibility of architectural form-making to logical analysis, the frameworks proposed in this study overcome the limitations of previously established theories thatdeal with architectural form-making. These can be divided into two categories: normative and positive theories.Normative theories include architectural treatises and manifestos. A major limitation of normativetheories is that they have limited explanatory power. Their concern is with promoting a specific aesthetic ideology and prescribing rules that can be used to derive compositions that conform to it. Therefore, they cannot be used to explain form-making in general. Positive frameworks, such asshape grammar, rely on rules to describe derivation and analysis processes. Nevertheless, they do not provide a comprehensive description of the tasks involved in architectural form-making. This causes the relation between the rules and compositional tasks to be ambiguous. It also affects adversely the ability of these frameworks to provide architects with a complete understanding of the role of compositional rules in derivation or analysis processes.
series	DDSS
type	normal paper
last changed	2010/05/16 09:11

_id	caadria2006_569
id	caadria2006_569
authors	WEI-TSANG CHANG, TENG-WEN CHANG
year	2006
title	FOLDING SPACE WITH TIME-BASED OPERATIONS
doi	https://doi.org/10.52842/conf.caadria.2006.x.j6m
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 569-571
summary	Folding is not only a design operation of shaping but also a philosophy theory from Deleuze (Deleuze 1988) which was adopted by architecture. Basically, folding constitutes to forming and topology, which often delivered a mathematical and philosophical expression in generating 3D architectural form. For instance, the work of Eisenman (Eisenman 2003), Libeskind and Lynn (Lynn 1998), they use folding as inspiration to explore the textural folding and bifurcation meaning in the process of form-making. While exploring the meaning of folding, their ideas are expressed by the form using computational tools. Therefore, if a suitable or inspirable tool like our Folding Space (FoS) could be available, such action –fold can be expressed further in the form exploration process.
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	acadia21_454
id	acadia21_454
authors	Kaiser, Kimball; Aljomairi, Maryam
year	2021
title	DTS Printer: Spatial Inkjet Printing
doi	https://doi.org/10.52842/conf.acadia.2021.454
source	ACADIA 2021: Realignments: Toward Critical Computation [Proceedings of the 41st Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 979-8-986-08056-7]. Online and Global. 3-6 November 2021. edited by S. Parascho, J. Scott, and K. Dörfler. 454-459.
summary	Inkjet printing has become abundantly available to businesses, offi ces, and households ever since its commercialization in the late 1980s. Although roughly forty years have passed, the desktop printer is still limited to printing on thin fl at surfaces, mainly paper (Mills 1998). On the other hand, while larger fl atbed printing technology does offer printing on a wide-range of substrates of various thicknesses, it is limited to 2-axis printing and is mainly used for large scale commercial applications due to high machine costs. Motivated by the ambition of printing on irregular surfaces of varied mediums, improving upon high price points of existing fl at-bed printing machines, and contributing to the public knowledge of distributed manufacturing, the Direct-To-Substrate (DTS) printer is an exploration into an integrated z-axis within inkjet printing. To realign a familiar technology used by many and hack it for the purposes of expanded capabilities, the DTS allows a user to manufacture a three-dimensional artifact and later print graphics directly upon said geometry using the same machine. To remain as accessible as possible, the DTS printer is a computer-numerically-controlled desktop machine made from common, sourceable hardware parts with a tool-changeable end effector, that currently accepts a Dremel tool as a router, and a hacked inkjet cartridge
series	ACADIA
type	project
email
last changed	2023/10/22 12:06

_id	489a
authors	Matthews, K., Duff, S. and Corner, D.
year	1998
title	A Model for Integrated Spatial and Structural Design of Buildings
doi	https://doi.org/10.52842/conf.caadria.1998.123
source	CAADRIA ‘98 [Proceedings of The Third Conference on Computer Aided Architectural Design Research in Asia / ISBN 4-907662-009] Osaka (Japan) 22-24 April 1998, pp. 123-132
summary	Recent advances in computer graphics and 3D user interfaces have enabled the emergence of 3D sketch modeling as a viable approach to architectural design, especially in the early schematic phase. This paper describes how a system can be built and used which integrates the capabilities of a good structural analysis system in the user-friendly working environment of a design-oriented modeling program. The structure of a building model as seen by finite element algorithms is a schematic idealization of the building's physical structure into nodes, elements, internal releases, boundary conditions, and loads. The more familiar architectural model used for design visualization represents spatial elements such as roofs, floors, walls, and windows. Rather than treat these models independently, the structural model can be defined in relation to the architectural as a virtual model with inherited common characteristics and additional relational and attribute information, using feature-based geometry data structures to organize topological intelligence in the spatial model. This provides the basis for synchronous modification of structural and architectural aspects of the design.
keywords	Structural Design, Spatial Design, Design Integration, Human-Computer Interaction, Feature-Based Modeling, Finite Element Analysis, Geometric Inference
series	CAADRIA
email
more	http://www.caadria.org
last changed	2022/06/07 07:58

_id	ddss9866
id	ddss9866
authors	Zacharias, John
year	1998
title	Virtual Shopping Centre Models and Path Choice
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	A three-dimensional computer model of a shopping center was navigated by participants who were unfamiliar with it. In the first experiment, an orthogonal and equally spaced grid was used. It was found that the great majority of the itineraries made simple and similar patterns which were remembered by the participants, although they often mistook theprecise path choices. In a second experiment, the width of the corridors was varied. Participants showed a distinct preference for wider corridors over narrow ones, resulting in a significantly different distribution of itineraries when compared with the results of the first experiment. Dimensional variation did not improve the ability of the participants toremember their itineraries, however. Also, individuals preferred to continue moving straight-ahead over turning. They also preferred to circumnavigate the shopping center, traveling along the outer edges, rather than head first into its center. The computer-based model is a low-cost way of testing preference in a dynamic way and could be mounted on multiple stations in computer laboratories as a way of increasing sample size. Thereremain some interface problems, however, that diminish somewhat the sensation of moving in real time. Further work will include refinements to the model and other variations in geometry and visual stimuli in the virtual shopping center, in addition to its validation in real environments.
series	DDSS
last changed	2003/08/07 16:36

_id	ddss9814
id	ddss9814
authors	Van Raes, N., Cornelis, B. and Donney, J.P.
year	1998
title	Decision Support for Improving Public Transport Network
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	When dealing with accessibility in a public transport network, isochronous maps are the common rule. Those maps are based on shortest distance algorithms run over simple or simplified networks. This contribution aims at representing the actual spatial distribution of the public transport offer in order to improve the usefulness to the urban community and to predict the evolution of the network according to the expected development of the agglomeration. The study combines the street (walking distance)and public transportation (buses) networks. The analyses rely on timetables and road maps completed by the public transportation company (TEC). Moreover, it makes use of built-up areas derived from satellite imagery. The processing requires raster- as well as vector-based procedures which have been achieved notably with the IDRISI software. Nevertheless the implementation of the decision rule relies on an original routine written by the authors. The area of interest concerns a part of the agglomeration of Liège (Belgium), including two secondary poles, highlighting their relation with the centre of the city and with each other. First the paper presents the typology of the public transport routes. Then the methodology elaborated for each transportation type is analysed; the shortestdistance routes and their alternatives are extracted and combined within a raster process. The obtained results and their operationality are finally presented and the paper concludes with possible improvements of the methodology.
series	DDSS
last changed	2003/08/07 16:36

_id	cb96
authors	Buckley, E., Zarli, A., Reynolds, C. and Richaud, O.
year	1998
title	Business objects in construct IT
source	R. Amor (ed.) Product and Process Modelling in the Building Industry, Building Research Establishment, Watford, England, pp. 117-130
summary	Objective: EU Esprit Project 25.741 Wonda aims to meet the needs for Enterprise Information Systems and E-Commerce in the construction and banking industries. Wonda aims to deliver a solution suitable for contracting firms. The solution should enable take-up by SMEs, incremental value-added growth (perhaps Incremental Radicalism), mobile computing for location independent access by project managers and quick set-up of virtual enterprises reflecting both the short customer-supplier relationships in the industry and the need of construction firms to constantly re-configure and re-invent themselves. Method: Wonda will develop an open and secure framework for business objects and electronic payment. Business objects can be defined as software components, which encapsulate business rules and procedures and which can run anywhere on the network. They provide secure and sophisticated access to diverse electronic content and software applications. Indeed, just as a building can be described as a unique arrangement of standard products, a building project can be described as a unique arrangement of standard product data. Business Objects give a high level view of product data. They can be assembled into frameworks to support high-level views on industrial projects. The open framework will enable a distributed architecture through CORBA thus facilitating the interoperation of heterogeneous software components as found in legacy systems. The modular security of the framework and its support for electronic payment ensure authenication, confidentiality and non-repudiation as required for the business processes of construction virtual enterprises. Indeed the modular and incremental implemenation of security will be achieved partly through a Business Object architecture. Results will comprise o a pilot in 2 product cycles, o an open & secure framework architecture, o Commotion middleware for enabling business objects on top of Corba, o WeBuild (construction), WeBank (banking) and SILK (security) business objects o OpenDMX component to enable object orientated access to legacy databases.
series	other
last changed	2003/04/23 15:14

_id	e5a2
authors	Debevec, P.
year	1998
title	Rendering synthetic objects into real scenes: Bridging traditional and image-based graphics with global illumination and high dynamic range photography
source	Proc. ACM SIGGRAPH 98, M. Cohen, Ed., 189–198
summary	We present a method that uses measured scene radiance and global illumination in order to add new objects to light-based models with correct lighting. The method uses a high dynamic range imagebased model of the scene, rather than synthetic light sources, to illuminate the newobjects. To compute the illumination, the scene is considered as three components: the distant scene, the local scene, and the synthetic objects. The distant scene is assumed to be photometrically unaffected by the objects, obviating the need for re- flectance model information. The local scene is endowed with estimated reflectance model information so that it can catch shadows and receive reflected light from the new objects. Renderings are created with a standard global illumination method by simulating the interaction of light amongst the three components. A differential rendering technique allows for good results to be obtained when only an estimate of the local scene reflectance properties is known. We apply the general method to the problem of rendering synthetic objects into real scenes. The light-based model is constructed from an approximate geometric model of the scene and by using a light probe to measure the incident illumination at the location of the synthetic objects. The global illumination solution is then composited into a photograph of the scene using the differential rendering technique. We conclude by discussing the relevance of the technique to recovering surface reflectance properties in uncontrolled lighting situations. Applications of the method include visual effects, interior design, and architectural visualization.
series	other
last changed	2003/04/23 15:50

_id	b0d2
authors	Greenberg, S. and Roseman, M.
year	1998
title	Groupware Toolkits for Synchronous Work
source	Beaudouin-Lafon, M. (ed.) Computer - Supported Cooperative Work, Trends in Software Series, John Wiley
summary	Groupware toolkits let developers build applications for synchronous and distributed computer-based conferencing. This chapter describes four components that we believe toolkits must provide. A run-time architecture automatically manages the creation, interconnection, and communications of both centralized and distributed processes that comprise conference sessions. A set of groupware programming abstractions allows developers to control the behaviour of distributed processes, to take action on state changes, and to share relevant data. Groupware widgets let interface features of value to conference participants be added easily to groupware applications. Session managers let people create and manage their meetings and are built by developers to accommodate the group's working style. We illustrate the many ways these components can be designed by drawing on our own experiences with GroupKit, and by reviewing approaches taken by other toolkit developers.
series	other
last changed	2003/04/23 15:50

_id	ddss9824
id	ddss9824
authors	Halin, G., Bignon, J.C.,Benali, K. and Godart, C.
year	1998
title	Cooperation models in co-design: application to architectural design
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	This paper focuses on cooperation concepts necessary for managing concurrent engineering. It reports on a research work being done in a project which establishes a connection between computer sciences, architecture, and telecommunications research1. Simple electronic cooperation paradigms (also called generic cooperation bricks) are found by analysing the current usage of human cooperation in the domainof AEC design environments. We introduce the principles of a middleware to build easily cooperative applications to assist cooperative design. In this approach, the design actors choose cooperation forms by instancing adapted generic cooperation bricks.
series	DDSS
email
last changed	2003/08/07 16:36

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