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 29d2
authors Barsky, Brian A. and DeRose,Tony D.
year 1989
title Geometric Continuity of Parametric Curves: Three Equivalent Characterizations
source IEEE Computer Graphics and Applications. November, 1989. vol. 9: pp. 60-68 : ill. includes bibliography
summary Geometric continuity of curves has received a good deal of research attention in recent years. The purpose of this article is to distill some of the important basic results into a self-contained presentation. The January 1990 issue of CG&M presents a paper that continues the discussion by offering applications of the theoretical background provided here
keywords continuity, parametrization, curves, computational geometry, representation
series CADline
last changed 2003/06/02 11:58

_id d9de
authors Fukuda, T., Nagahama, R., Kaga, A. and Sasada, T.
year 2002
title Collaboration Support System for City Plans or Community Designs Based on VR/CG Technology
source CAADRIA 2002 [Proceedings of the 7th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 983-2473-42-X] Cyberjaya (Malaysia) 18–20 April 2002, pp. 257-264
summary This paper reports the collaboration support system for city plans or community designs based on virtual reality (VR) or computer graphics (CG) technology. This time we report to elaborate the extended potable VR equipment and expression method with CG to allow for the realistic viewing of night scenes, and apply to real projects.
series CAADRIA
last changed 2002/04/25 17:26

_id ijac20031406
id ijac20031406
authors Fukuda, Tomohiro; Nagahama, Ryuichiro; Kaga, Atsuko; Sasada, Tsuyoshi
year 2003
title Collaboration Support System for City Plans or Community Designs Based on VR/CG Technology
source International Journal of Architectural Computing vol. 1 - no. 4
summary This paper reports on a collaboration support system for city plans or community designs based on virtual reality (VR) or computer graphics (CG) technology. It reports on an extension to an ongoing research programme, and in particular it introduces the developments of portable VR equipment, and an expression method using CG to enable the realistic viewing of night scenes, and application to real projects.
series journal
last changed 2007/03/04 06:08

_id caadria2012_120
id caadria2012_120
authors Fukuda, Tomohiro; Tian Zhang, Ayako Shimizu, Masaharu Taguchi, Lei Sun and Nobuyoshi Yabuki
year 2012
title SOAR: Sensor oriented mobile augmented reality for urban landscape assessment
source Proceedings of the 17th International Conference on Computer Aided Architectural Design Research in Asia / Chennai 25-28 April 2012, pp. 387–396
summary This research presents the development of a sensor oriented mobile AR system which realises geometric consistency using GPS, a gyroscope and a video camera which are mounted in a smartphone for urban landscape assessment. A low cost AR system with high flexibility is realised. Consistency of the viewing angle of a video camera and a CG virtual camera, and geometric consistency between a video image and 3DCG are verified. In conclusion, the proposed system was evaluated as feasible and effective.
keywords Landscape assessment; augmented reality; mobile device; geometric consistency; GPS
series CAADRIA
last changed 2012/05/29 07:34

_id ecaade2016_185
id ecaade2016_185
authors Ilčík, Martin and Wimmer, Michael
year 2016
title Collaborative Modeling with Symbolic Shape Grammars
source Herneoja, Aulikki; Toni Österlund and Piia Markkanen (eds.), Complexity & Simplicity - Proceedings of the 34th eCAADe Conference - Volume 2, University of Oulu, Oulu, Finland, 22-26 August 2016, pp. 417-426
wos WOS:000402064400041
summary Generative design based on symbolic grammars is oriented on individual artists. Team work is not supported since single scripts produced by various artists have to be linked and maintained manually with a lot of effort. The main motivation for a collaborative modeling framework was to reduce the script management required for large projects. We achieved even more by extending the design paradigm to a cloud environment where everyone is part of a huge virtual team. The main contribution of the presented work is a web-based modeling system with a specialized variant of a symbolic shape grammar.
keywords collaboration; symbolic shape grammar; generative modeling
series eCAADe
type normal paper
more admin
last changed 2017/06/28 08:46

_id e469
authors Johnson, Brian R.
year 1993
title The Graphics Application Paradigm: A Framework for User Understanding of CG/CAD Applications
source Education and Practice: The Critical Interface [ACADIA Conference Proceedings / ISBN 1-880250-02-0] Texas (Texas / USA) 1993, pp. 11-20
summary What do young architects need to know about computer graphics? What "immutable and eternal" models will allow them to perform their best as professional architects? At one time all computer users were computer programmers and the answer was thus rooted in programming expertise, but the era of personally developed software is largely past. An alternative more vocational approach would stress courses in the use of specific programs, but it is hard to imagine a more mutable "object of knowledge" than the practical details of computing in the late twentieth century. In fact, our students are deluged with information: commands, vocabulary, options, sales hyperbole, and "do this, it works" cookbooks. As educators, we face the challenge of identifying that which is "immutable and eternal", and presenting it to our students (and trying to focus their attention on it).
series ACADIA
last changed 1999/02/25 09:14

_id 1022
authors Jozen, T., Wang, L. and Sasada, T.
year 1999
title Sketch VRML - 3D Modeling of Conception
source Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 557-563
summary When an idea hits upon architect's mind suddenly, that idea may be memorized on a piece of paper like as napkin of a restaurant, reverse face of pamphlet etc. For conceptual design, free-form drawing with pencil and paper can efficiently delineate architect's thinking. In environmental design such as urban developing, architects usually describe their initial conception on 2D sketch. Our aim is to construct the Sketch-VRML system mixing non-photo realistic free-form 2D sketch and usual 3D computer graphics for conceptual design applying it to environmental design. It is our principle that we can use CG lightly and naturally like 'croquis' with no special hardware needed but just pencil and paper. From free-form 2D sketch on paper, the Sketch-VRML system builds it up to 3D model 'as is' resembling free hand drawing and it can be revolved and extruded. 3DCG component already produced will be useful material for design making as well as sketches. Therefore, we would like to use these materials as conception making resource with database.
keywords Conception, Sketch, 3DCG, Database
series eCAADe
last changed 1999/10/10 12:52

_id f01f
authors Kaga, A., Nakahama, K., Hamada, S., Yamaguchi, S. and Sasada, T.
year 2001
title Collaborative design system with hypermedium and networking
source Automation in Construction 10 (3) (2001) pp. 309-318
summary During the past 10 years, the Sasada Lab of Osaka University has been using computer graphics (CG) for presentation, design review, and design for practical architectural design projects. Our laboratory is interested in "collaborative design" with designers, clients, and citizen. We discovered that there are two major problems, initiatives and timing, and have found new solutions using network technologies. This method have solved these problems, but we have found major problems in "collaborative design" that occur during many practical architectural design projects. This paper presents these problems and some of the solutions and research that our group has accomplished, or is pursuing, in the field of "collaborative design" using some of the latest technologies in hypermedium and networking. This paper presents the requirements for collaborative design system, the new technologies and the thought of system architecture, the prototype system in practical design project, and the evaluation of prototype system.
series journal paper
last changed 2003/05/15 19:22

_id 41be
authors Komatsu, Kiichiro and Kanda, Nobutaka
year 1997
title Visual Recognition Oriented Spatial Presentation in CAAD System
source CAADRIA ‘97 [Proceedings of the Second Conference on Computer Aided Architectural Design Research in Asia / ISBN 957-575-057-8] Taiwan 17-19 April 1997, pp. 267-276
summary Computers have established themselves as indispensable tools in the practice of urban and architectural design. As they have become more and more popular, various presentation means to support computerized design tools, such as CG and VRML, have been developed and put into practical use. They have been inclined to be regarded as tools for photorealistic presentation, or as a mere shape previewer. However, considering the recent demand to esteem multi-aspects of space design, the importance of understanding and transmitting multi-aspects in space aided by visual recognition is expected to increase undoubtedly. In order to realize such assistant procedure in design, we must identify the requirements of spatial presentation in design, and apply it appropriately to visualizing process. By virtue of that, it can be said that visualization itself has possibilities to open some innovative styles of urban and architectural design.
series CAADRIA
last changed 1999/02/01 12:20

_id 0ed4
authors Kusama, H., Fukuda, T., Park, J.W. and Sasada, T.
year 1996
title Networked CAD System for Designer Group
source CAADRIA ‘96 [Proceedings of The First Conference on Computer Aided Architectural Design Research in Asia / ISBN 9627-75-703-9] Hong Kong (Hong Kong) 25-27 April 1996, pp. 153-161
summary Open Design Environment (ODE), the concept of which was proposed in 1991, is a platform on computers to support synthetic to proceed design. We have applied ODE in practical use of design, design review and presentation to make collaboration by using CG in design participants. Recent linkage between LAN and Wide Area Network, just as the Internet, gave ODE a new progress to make wide area collaboration. It leads to generate the concept of Network ODE (NODE). However, we have found some problems on system to proceed the wide area collaboration by using ODE’s Design Tools. Since they are developed on the specific computer system, they can not correspond to the wide area collaboration on various network environments. As a result, the re-arrangement of design environment and the development of Design Tools are needed, which are rather flexible and general purpose, i.e. independent of machine sort and network adaptive. In this paper, to proceed collaboration in a designer group, how to create the system of NODE is demonstrated with the new Key Technologies of network and CG.
series CAADRIA
last changed 1999/01/31 14:08

_id 757b
authors Lee, Jaemin and Akleman, Ergun
year 2002
title Practical Image Based Lighting
source Thresholds - Design, Research, Education and Practice, in the Space Between the Physical and the Virtual [Proceedings of the 2002 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-11-X] Pomona (California) 24-27 October 2002, pp. 279-288
summary In this paper, we present a user-friendly and practical method for seamless integration of computergeneratedimages (CG) with real photographs and video. In general, such seamless integration isextremely difficult and requires recovery of real-world information to simulate the same environment forboth CG and real objects. This real-world information includes camera positions and parameters,shapes, material properties, and motion of real objects. Among these, one of the most important islighting.Image-based lighting that is developed to recover illumination information of the real world fromphotographs has recently become popular in computer graphics. In this paper we present a practicalimage-based lighting method that is based on a simple and easily constructable device: a square platewith a cylindrical stick. We have developed a user-guided system to approximately recover illuminationinformation (i.e. orientations, colors, and intensities of light sources) from a photograph of this device.Our approach also helps to recover surface colors of real objects based on reconstructed lightinginformation.
series ACADIA
last changed 2002/10/26 23:25

_id ga0009
id ga0009
authors Lewis, Matthew
year 2000
title Aesthetic Evolutionary Design with Data Flow Networks
source International Conference on Generative Art
summary For a little over a decade, software has been created which allows for the design of visual content by aesthetic evolutionary design (AED) [3]. The great majority of these AED systems involve custom software intended for breeding entities within one fairly narrow problem domain, e.g., certain classes of buildings, cars, images, etc. [5]. Only a very few generic AED systems have been attempted, and extending them to a new design problem domain can require a significant amount of custom software development [6][8]. High end computer graphics software packages have in recent years become sufficiently robust to allow for flexible specification and construction of high level procedural models. These packages also provide extensibility, allowing for the creation of new software tools. One component of these systems which enables rapid development of new generative models and tools is the visual data flow network [1][2][7]. One of the first CG packages to employ this paradigm was Houdini. A system constructed within Houdini which allows for very fast generic specification of evolvable parametric prototypes is described [4]. The real-time nature of the software, when combined with the interlocking data networks, allows not only for vertical ancestor/child populations within the design space to be explored, but also allows for fast "horizontal" exploration of the potential population surface. Several example problem domains will be presented and discussed. References: [1] Alias | Wavefront. Maya. 2000, [2] Avid. SOFTIMAGE. 2000, [3] Bentley, Peter J. Evolutionary Design by Computers. Morgan Kaufmann, 1999. [4] Lewis, Matthew. "Metavolve Home Page". 2000, [5] Lewis, Matthew. "Visual Aesthetic Evolutionary Design Links". 2000, [6] Rowley, Timothy. "A Toolkit for Visual Genetic Programming". Technical Report GCG-74, The Geometry Center, University of Minnesota, 1994. [7] Side Effects Software. Houdini. 2000, [8] Todd, Stephen and William Latham. "The Mutation and Growth of Art by Computers" in Evolutionary Design by Computers, Peter Bentley ed., pp. 221-250, Chapter 9, Morgan Kaufmann, 1999.    
series other
last changed 2003/08/07 15:25

_id fc4f
authors Lin, C.Y.
year 2002
title A Place Where People Are Free to Move: Exploring Dynamic Texture Mapping in Computer Graphic Systems
source CAADRIA 2002 [Proceedings of the 7th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 983-2473-42-X] Cyberjaya (Malaysia) 18–20 April 2002, pp. 117-122
summary Recent studies, both collaborative design system and scenario scripting, attempt to explore further CG media. Corbusier pointed out that good architecture is a place where people can walk unrestrainedly and feel free in spirit. However, it is apparent that the human figures are still in animation, whereas they are free to move in the real world. The human figure always plays an important role in the development of design media. The objective of this paper is to develop a new design method using CG media and to study the process of dynamic human texture mapping within the CG. This research conducted a design experiment using computer as the sole design medium. The results show that the new design method not only altered the behavior of the designer, but also impacted design thinking cognition.
series CAADRIA
last changed 2002/04/25 17:26

_id cf49
authors Martínez, Javier Alberto
year 1999
title Potencialidades del SIG 3D y los Modelos Urbanos Interactivos (The Potential of the SIG 3D and the Interactive Urban Models)
source III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 225-229
summary We are facing a constant growth in 3D GIS, and its interaction with CAD, VR and CG, influence each other more than ever. In this context, 3D urban models can interactively assist in any step of a decision making process. Urban planners can benefit from 3D urban models in a way never thought before. PC technology , free 3D interactive viewers and VRML offer low cost implementations. Data coming from cadastral updates in Argentina are an invaluable source of digital data and building height attributes are included on that. In that way, tabular or attribute data can be linked to 3D graphic data. Geographic Information Systems can add to these 3D urban models all the benefits of attribute data plus its spatial analysis capabilities. Queries of any kind, and links to hypertext, planning documents can enhance the information provided by this "virtual world". Finally, regarding communication aspects, Interactive design and decision making can be reached in a much easier way as 3D is better than 2D. If we consider that 3D urban models can easily be browsed in VRML we have then the enormous potential of collaborative design through internet and intranet.
series SIGRADI
last changed 2016/03/10 08:55

_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
last changed 2016/10/24 11:12

_id acadia17_446
id acadia17_446
authors Nejur, Andrei; Steinfeld, Kyle
year 2017
title Ivy: Progress in Developing Practical Applications for a Weighted-Mesh Representation for Use in Generative Architectural Design
source ACADIA 2017: DISCIPLINES & DISRUPTION [Proceedings of the 37th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-96506-1] Cambridge, MA 2-4 November, 2017), pp. 446- 455
summary This paper presents progress in the development of practical applications for graph representations of meshes for a variety of problems relevant to generative architectural design (GAD). In previous work (Nejur and Steinfeld 2016), the authors demonstrated that while approaches to marrying mesh and graph representations drawn from computer graphics (CG) can be effective within the domains of applications for which they have been developed, they have not adequately addressed wider classes of problems in GAD. There, the authors asserted that a generalized framework for working with graph representations of meshes can effectively bring recent advances in mesh segmentation to bear on GAD problems, a utility demonstrated through the development of a plug-in for the visual programming environment Grasshopper. Here, we describe a number of implemented solutions to mesh segmentation and transformation problems, articulated as a series of additional features developed as a part of this same software. Included are problems of mesh segmentation approached through the creation of acyclic connected graphs (trees); problems of mesh transformations, such as those that unfold a segmented mesh in anticipation of fabrication; and problems of geometry generation in relation to a segmented mesh, as demonstrated through a generalized approach to mesh weaving. We present these features in the context of their potential applications in GAD and provide a limited set of examples for their use.
keywords design methods; information processing
series ACADIA
last changed 2017/10/17 09:13

_id 2005_573
id 2005_573
authors Oh, Sooyeon, Tanaka, Katsumi and Sasada, Tsuyoshi
year 2005
title 3D Digital Archive Experience for Historical Architectures
source Digital Design: The Quest for New Paradigms [23nd eCAADe Conference Proceedings / ISBN 0-9541183-3-2] Lisbon (Portugal) 21-24 September 2005, pp. 573-580
summary Digital archives that use 3D CG models, for example, relating to historical architecture and archaeological sites, are now commonly created for a wide range of purposes. Unlike actually visiting historical architecture, access to digital archives and browsing of their content are computer-related. Thus, users cannot easily gain a deep understanding of the content and are less likely to truly enjoy it. Therefore, in this paper, we propose a method to support collaborative experiencing of 3D digital archives related to historical architecture. To achieve this goal, we developed a prototype system for a 3D digital archive of historical architecture using VR technology. The system offers an interactive interface.
keywords 3D Digital Archive; Experience; Comparison; VR
series eCAADe
last changed 2012/11/23 18:17

_id 29f3
authors Ohno, Ryuzo and Aoki, Hirofumi
year 1999
title Development of an Interactive Simulation System for Environment-Behavior Study
source Simulation of Architectural Space - Color and Light, Methods and Effects [Proceedings of the 4rd European Architectural Endoscopy Association Conference / ISBN 3-86005-267-5] Dresden (Germany), 29 September - 1 October 1999, pp. 36-49
summary An important recent development in the simulation techniques was the changes in the mode of presentation: from passive mode to active one. It is now possible to present an image according to the observer’s voluntary movement of body and head by means of a head-mounted display. Such interactive simulation system, which allows people to observe what they like to see, is suitable to study environmental perception, because active attention is essential to manipulate enormous information in the environment. The present paper reports two case studies in which an interactive simulation system was developed to test psychological impact of interior and exterior spaces: the case study 1 intended to clarify the effect of the disposition of transparent and opaque surfaces of a room on the occupants’ „sense of enclosure“, the case study 2 intended to make clear some physical features along a street which are influential for changing atmosphere. In addition to the empirical research, an attempt to develop a new simulation system which uses both analogue and digital images is briefly reported, and a preliminary experiment was conducted to test the performance of the simulation system in which such movable elements as pedestrians and cars generated by real-time CG were overlaid on the video image of a scale model street.
series EAEA
last changed 2005/09/09 08:43

_id sigradi2003_095
id sigradi2003_095
authors Petric, Jelena and Maver, Tom
year 2003
title Digital Prototyping in the Architectural Design Studio
source SIGraDi 2003 - [Proceedings of the 7th Iberoamerican Congress of Digital Graphics] Rosario Argentina 5-7 november 2003
summary This paper describes the inter-related use of three digital prototyping technologies by undergraduate students in the Department of Architecture and Building Science at the University of Strathclyde. These are: virtual reality computer graphics (CG), rapid manufacture (RM) of physical scale models from digital data, and acquisition of digital data relating to the shape of a physical object by some form of laser scanning (LS). The paper describes two experiments - one relating to housing, the other to a transport museum - to determine how seamlessly, accurately and usefully the (student) architect can move from one technology to another in the course of design.
keywords Computer graphics, rapid manufacture, laser scanning
series SIGRADI
last changed 2016/03/10 08:57

_id 397d
id 397d
authors Rafi, A, Tinauli, M and Mohd Izani, Z A
year 2007
title High dynamic range images: Evolution, applications and suggested processes
source Proceedings of the 11th International Conference on Information Visualization (IV07), ETH Zurich, Switzerland, 4-6 July, 877-882.
summary Three dimensional (3D) and Computer Graphics (CG) industries nowadays require ‘instant’ realism and extreme special effects while imposing the balance in cost, time and solution acceptance standard. It has been known that realistic rendering is time consuming, difficult to use, complex, expensive and often produces insufficient digital output to predict particularly in the early visualization process. This paper focuses on one of the emerging technologies, High Dynamic Range Image (HDRI) and how it can be developed in achieving effective solution, while maintaining ‘realism’ or required result based on a specific application. We firstly introduce the overall HDRI processes before continue to present a framework of captured Low Density Range Image (LDRI) source sequence effectively in HDRI environment. This paper concludes with discussions and lists the application of HDRI.
keywords HDRI, Rendering, HDRI Applications
series other
type normal paper
last changed 2007/09/11 00:27

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