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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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Reformat results as: short short into frame detailed detailed into frame

_id	a92b
authors	Kolarevic , Branko
year	1997
title	Relational Description of Shapes and Form Generation
doi	https://doi.org/10.52842/conf.caadria.1997.029
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. 29-39
summary	The paper describes a relations-based graphic environment of shape delineation and dynamic drawing manipulation that can provide a qualitatively different way to explore shape, dimension and geometric organization. Relational description of shapes based on the concept of construction or regulating lines is introduced as an explicit formulation of a strategy to form generation and creative discovery. A limited prototype of the relations-based graphic system, called ReDRAW, is briefly described and the implications of its use in conceptual architectural design are discussed.
series	CAADRIA
email
last changed	2022/06/07 07:51

_id	4560
authors	Kolarevic, Branko
year	1997
title	Regulating Lines, Geometric Relations, and Shape Delineation in Design
doi	https://doi.org/10.52842/conf.ecaade.1997.x.n2n
source	Challenges of the Future [15th eCAADe Conference Proceedings / ISBN 0-9523687-3-0] Vienna (Austria) 17-20 September 1997
summary	The paper presents a computer-based graphic environment for shape delineation that can provide a qualitatively different way to explore shape, dimension, and geometric organization in design. Relational description of shapes based on the concept of regulating lines is introduced as an explicit formulation of a strategy to form generation and creative discovery. The paper also presents ReDRAW, a limited prototype of the relations-based graphic system, and discusses some implications of its use in conceptual architectural design.
keywords	Elations-Based Design Systems, Shape Delineation, Regulating Lines, Geometric Relations
series	eCAADe
email
more	http://info.tuwien.ac.at/ecaade/proc/kolarev/kolarev.htm
last changed	2022/06/07 07:50

_id	ga0026
id	ga0026
authors	Ransen, Owen F.
year	2000
title	Possible Futures in Computer Art Generation
source	International Conference on Generative Art
summary	Years of trying to create an "Image Idea Generator" program have convinced me that the perfect solution would be to have an artificial artistic person, a design slave. This paper describes how I came to that conclusion, realistic alternatives, and briefly, how it could possibly happen. 1. The history of Repligator and Gliftic 1.1 Repligator In 1996 I had the idea of creating an “image idea generator”. I wanted something which would create images out of nothing, but guided by the user. The biggest conceptual problem I had was “out of nothing”. What does that mean? So I put aside that problem and forced the user to give the program a starting image. This program eventually turned into Repligator, commercially described as an “easy to use graphical effects program”, but actually, to my mind, an Image Idea Generator. The first release came out in October 1997. In December 1998 I described Repligator V4 [1] and how I thought it could be developed away from simply being an effects program. In July 1999 Repligator V4 won the Shareware Industry Awards Foundation prize for "Best Graphics Program of 1999". Prize winners are never told why they won, but I am sure that it was because of two things: 1) Easy of use 2) Ease of experimentation "Ease of experimentation" means that Repligator does in fact come up with new graphics ideas. Once you have input your original image you can generate new versions of that image simply by pushing a single key. Repligator is currently at version 6, but, apart from adding many new effects and a few new features, is basically the same program as version 4. Following on from the ideas in [1] I started to develop Gliftic, which is closer to my original thoughts of an image idea generator which "starts from nothing". The Gliftic model of images was that they are composed of three components: 1. Layout or form, for example the outline of a mandala is a form. 2. Color scheme, for example colors selected from autumn leaves from an oak tree. 3. Interpretation, for example Van Gogh would paint a mandala with oak tree colors in a different way to Andy Warhol. There is a Van Gogh interpretation and an Andy Warhol interpretation. Further I wanted to be able to genetically breed images, for example crossing two layouts to produce a child layout. And the same with interpretations and color schemes. If I could achieve this then the program would be very powerful. 1.2 Getting to Gliftic Programming has an amazing way of crystalising ideas. If you want to put an idea into practice via a computer program you really have to understand the idea not only globally, but just as importantly, in detail. You have to make hard design decisions, there can be no vagueness, and so implementing what I had decribed above turned out to be a considerable challenge. I soon found out that the hardest thing to do would be the breeding of forms. What are the "genes" of a form? What are the genes of a circle, say, and how do they compare to the genes of the outline of the UK? I wanted the genotype representation (inside the computer program's data) to be directly linked to the phenotype representation (on the computer screen). This seemed to be the best way of making sure that bred-forms would bare some visual relationship to their parents. I also wanted symmetry to be preserved. For example if two symmetrical objects were bred then their children should be symmetrical. I decided to represent shapes as simply closed polygonal shapes, and the "genes" of these shapes were simply the list of points defining the polygon. Thus a circle would have to be represented by a regular polygon of, say, 100 sides. The outline of the UK could easily be represented as a list of points every 10 Kilometers along the coast line. Now for the important question: what do you get when you cross a circle with the outline of the UK? I tried various ways of combining the "genes" (i.e. coordinates) of the shapes, but none of them really ended up producing interesting shapes. And of the methods I used, many of them, applied over several "generations" simply resulted in amorphous blobs, with no distinct family characteristics. Or rather maybe I should say that no single method of breeding shapes gave decent results for all types of images. Figure 1 shows an example of breeding a mandala with 6 regular polygons: Figure 1 Mandala bred with array of regular polygons I did not try out all my ideas, and maybe in the future I will return to the problem, but it was clear to me that it is a non-trivial problem. And if the breeding of shapes is a non-trivial problem, then what about the breeding of interpretations? I abandoned the genetic (breeding) model of generating designs but retained the idea of the three components (form, color scheme, interpretation). 1.3 Gliftic today Gliftic Version 1.0 was released in May 2000. It allows the user to change a form, a color scheme and an interpretation. The user can experiment with combining different components together and can thus home in on an personally pleasing image. Just as in Repligator, pushing the F7 key make the program choose all the options. Unlike Repligator however the user can also easily experiment with the form (only) by pushing F4, the color scheme (only) by pushing F5 and the interpretation (only) by pushing F6. Figures 2, 3 and 4 show some example images created by Gliftic. Figure 2 Mandala interpreted with arabesques Figure 3 Trellis interpreted with "graphic ivy" Figure 4 Regular dots interpreted as "sparks" 1.4 Forms in Gliftic V1 Forms are simply collections of graphics primitives (points, lines, ellipses and polygons). The program generates these collections according to the user's instructions. Currently the forms are: Mandala, Regular Polygon, Random Dots, Random Sticks, Random Shapes, Grid Of Polygons, Trellis, Flying Leap, Sticks And Waves, Spoked Wheel, Biological Growth, Chequer Squares, Regular Dots, Single Line, Paisley, Random Circles, Chevrons. 1.5 Color Schemes in Gliftic V1 When combining a form with an interpretation (described later) the program needs to know what colors it can use. The range of colors is called a color scheme. Gliftic has three color scheme types: 1. Random colors: Colors for the various parts of the image are chosen purely at random. 2. Hue Saturation Value (HSV) colors: The user can choose the main hue (e.g. red or yellow), the saturation (purity) of the color scheme and the value (brightness/darkness) . The user also has to choose how much variation is allowed in the color scheme. A wide variation allows the various colors of the final image to depart a long way from the HSV settings. A smaller variation results in the final image using almost a single color. 3. Colors chosen from an image: The user can choose an image (for example a JPG file of a famous painting, or a digital photograph he took while on holiday in Greece) and Gliftic will select colors from that image. Only colors from the selected image will appear in the output image. 1.6 Interpretations in Gliftic V1 Interpretation in Gliftic is best decribed with a few examples. A pure geometric line could be interpreted as: 1) the branch of a tree 2) a long thin arabesque 3) a sequence of disks 4) a chain, 5) a row of diamonds. An pure geometric ellipse could be interpreted as 1) a lake, 2) a planet, 3) an eye. Gliftic V1 has the following interpretations: Standard, Circles, Flying Leap, Graphic Ivy, Diamond Bar, Sparkz, Ess Disk, Ribbons, George Haite, Arabesque, ZigZag. 1.7 Applications of Gliftic Currently Gliftic is mostly used for creating WEB graphics, often backgrounds as it has an option to enable "tiling" of the generated images. There is also a possibility that it will be used in the custom textile business sometime within the next year or two. The real application of Gliftic is that of generating new graphics ideas, and I suspect that, like Repligator, many users will only understand this later. 2. The future of Gliftic, 3 possibilties Completing Gliftic V1 gave me the experience to understand what problems and opportunities there will be in future development of the program. Here I divide my many ideas into three oversimplified possibilities, and the real result may be a mix of two or all three of them. 2.1 Continue the current development "linearly" Gliftic could grow simply by the addition of more forms and interpretations. In fact I am sure that initially it will grow like this. However this limits the possibilities to what is inside the program itself. These limits can be mitigated by allowing the user to add forms (as vector files). The user can already add color schemes (as images). The biggest problem with leaving the program in its current state is that there is no easy way to add interpretations. 2.2 Allow the artist to program Gliftic It would be interesting to add a language to Gliftic which allows the user to program his own form generators and interpreters. In this way Gliftic becomes a "platform" for the development of dynamic graphics styles by the artist. The advantage of not having to deal with the complexities of Windows programming could attract the more adventurous artists and designers. The choice of programming language of course needs to take into account the fact that the "programmer" is probably not be an expert computer scientist. I have seen how LISP (an not exactly easy artificial intelligence language) has become very popular among non programming users of AutoCAD. If, to complete a job which you do manually and repeatedly, you can write a LISP macro of only 5 lines, then you may be tempted to learn enough LISP to write those 5 lines. Imagine also the ability to publish (and/or sell) "style generators". An artist could develop a particular interpretation function, it creates images of a given character which others find appealing. The interpretation (which runs inside Gliftic as a routine) could be offered to interior designers (for example) to unify carpets, wallpaper, furniture coverings for single projects. As Adrian Ward [3] says on his WEB site: "Programming is no less an artform than painting is a technical process." Learning a computer language to create a single image is overkill and impractical. Learning a computer language to create your own artistic style which generates an infinite series of images in that style may well be attractive. 2.3 Add an artificial conciousness to Gliftic This is a wild science fiction idea which comes into my head regularly. Gliftic manages to surprise the users with the images it makes, but, currently, is limited by what gets programmed into it or by pure chance. How about adding a real artifical conciousness to the program? Creating an intelligent artificial designer? According to Igor Aleksander [1] conciousness is required for programs (computers) to really become usefully intelligent. Aleksander thinks that "the line has been drawn under the philosophical discussion of conciousness, and the way is open to sound scientific investigation". Without going into the details, and with great over-simplification, there are roughly two sorts of artificial intelligence: 1) Programmed intelligence, where, to all intents and purposes, the programmer is the "intelligence". The program may perform well (but often, in practice, doesn't) and any learning which is done is simply statistical and pre-programmed. There is no way that this type of program could become concious. 2) Neural network intelligence, where the programs are based roughly on a simple model of the brain, and the network learns how to do specific tasks. It is this sort of program which, according to Aleksander, could, in the future, become concious, and thus usefully intelligent. What could the advantages of an artificial artist be? 1) There would be no need for programming. Presumbably the human artist would dialog with the artificial artist, directing its development. 2) The artificial artist could be used as an apprentice, doing the "drudge" work of art, which needs intelligence, but is, anyway, monotonous for the human artist. 3) The human artist imagines "concepts", the artificial artist makes them concrete. 4) An concious artificial artist may come up with ideas of its own. Is this science fiction? Arthur C. Clarke's 1st Law: "If a famous scientist says that something can be done, then he is in all probability correct. If a famous scientist says that something cannot be done, then he is in all probability wrong". Arthur C Clarke's 2nd Law: "Only by trying to go beyond the current limits can you find out what the real limits are." One of Bertrand Russell's 10 commandments: "Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric" 3. References 1. "From Ramon Llull to Image Idea Generation". Ransen, Owen. Proceedings of the 1998 Milan First International Conference on Generative Art. 2. "How To Build A Mind" Aleksander, Igor. Wiedenfeld and Nicolson, 1999 3. "How I Drew One of My Pictures: or, The Authorship of Generative Art" by Adrian Ward and Geof Cox. Proceedings of the 1999 Milan 2nd International Conference on Generative Art.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	4e85
authors	Datta, S., Chang, T.W. and Woodbury, R.F.
year	1997
title	Describing Temple Cellas Using Seed-Config
doi	https://doi.org/10.52842/conf.caadria.1997.367
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. 367-376
summary	We focus on portions of the constructive geometry of early Hindu temple cellas from western India, the use of massing technologies in SEED-Config, a rule based generative modeller and the spaces of cella designs engendered by such descriptions. We introduce the basic cella form and present two technology sets in detail, Anga and Sikhara, based on canonical geometric relations in two dimensions and demonstrate the use of these relations in three dimensions. Finally, we propose research directions and draw lessons from our experience in the writing of domain specific descriptions.
series	CAADRIA
email
last changed	2022/06/07 07:55

_id	3e89
authors	Pridmore, T.P., Cooper, D. and Taylor, N.
year	1997
title	Estimating camera orientation from vanishing point location during sewer surveys
source	Automation in Construction 5 (5) (1997) pp. 407-419
summary	A method is presented by which camera orientation relative to the pipe axis may be recovered from a single frame of a survey video of a small-bore brick sewer. If it can be fully recovered, the pipe axis provides part of a frame of reference within which 3D descriptions of sewer shape may be expressed. The concept of the vanishing point is introduced and it is shown that the vanishing point position supplies information about the relative orientations of the camera and pipe axes. A method for the automatic detection of vanishing points is presented and used to analyse the camera motion underlying a number of sewer survey videos. The technique might form an active part of a more comprehensive image understanding system recovering pipe shape from survey videos and/or be used as an experimental tool during the design of such a system.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:23

_id	cabb
authors	Broughton, T., Tan, A. and Coates, P.S.
year	1997
title	The Use of Genetic Programming In Exploring 3D Design Worlds - A Report of Two Projects by Msc Students at CECA UEL
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 885-915
summary	Genetic algorithms are used to evolve rule systems for a generative process, in one case a shape grammar,which uses the "Dawkins Biomorph" paradigm of user driven choices to perform artificial selection, in the other a CA/Lindenmeyer system using the Hausdorff dimension of the resultant configuration to drive natural selection. (1) Using Genetic Programming in an interactive 3D shape grammar. A report of a generative system combining genetic programming (GP) and 3D shape grammars. The reasoning that backs up the basis for this work depends on the interpretation of design as search In this system, a 3D form is a computer program made up of functions (transformations) & terminals (building blocks). Each program evaluates into a structure. Hence, in this instance a program is synonymous with form. Building blocks of form are platonic solids (box, cylinder, etc.). A Variety of combinations of the simple affine transformations of translation, scaling, rotation together with Boolean operations of union, subtraction and intersection performed on the building blocks generate different configurations of 3D forms. Using to the methodology of genetic programming, an initial population of such programs are randomly generated,subjected to a test for fitness (the eyeball test). Individual programs that have passed the test are selected to be parents for reproducing the next generation of programs via the process of recombination. (2) Using a GA to evolve rule sets to achieve a goal configuration. The aim of these experiments was to build a framework in which a structure's form could be defined by a set of instructions encoded into its genetic make-up. This was achieved by combining a generative rule system commonly used to model biological growth with a genetic algorithm simulating the evolutionary process of selection to evolve an adaptive rule system capable of replicating any preselected 3D shape. The generative modelling technique used is a string rewriting Lindenmayer system the genes of the emergent structures are the production rules of the L-system, and the spatial representation of the structures uses the geometry of iso-spatial dense-packed spheres
series	CAAD Futures
email
last changed	2003/11/21 15:16

_id	d869
authors	Chu, C.-C., Dani, T.H. and Gadh, R.
year	1997
title	Multi-sensory user interface for a virtual-reality-based computer-aided design system
source	Computer-Aided Design, Vol. 29 (10) (1997) pp. 709-725
summary	The generation of geometric shapes called `geometric concept designs' via the multi-sensory user interface of a virtual reality (VR) based system motivates the currentresearch. In this new VR-based system, geometric designs can be more effectively inputted into the computer in a physically intuitive way. The interaction mechanism issimilar to the way in which industrial designers sit and discuss concept design shapes across a table from each other, prior to making a final decision about the productdetails. By using different sensory modalities, such as voice, hand motions and gestures, product designers can convey design ideas through the VR-basedcomputer-aided design (CAD) system. In this scenario, the multi-sensory interface between human and computer plays a central role with respect to usability, usefulnessand accuracy. The current paper focuses on determining the requirements for the multi-sensory user interface and assessing the applications of different input and outputmechanisms in the virtual environment (VE). In order to evaluate this multi-sensory user interface, this paper formulates the typical activities in product shape design intoa set of requirements for the VR-CAD system. On the basis of these requirements, we interviewed typical CAD users about the effectiveness of using different sensoryinput and output interaction mechanisms such as visual, auditory and tactile. According to the results of these investigations, a nodal network of design activity thatdefines the multi-sensory user interface of the VR-CAD system is determined in the current research. The VR-CAD system is still being developed. However, voicecommand input, hand motion input, three-dimensional visual output and auditory output have been successfully integrated into the current system. Moreover, severalmechanical parts have been successfully created through the VR interface. Once designers use the VR-CAD system that we are currently developing, the interfacerequirements determined in the current paper may be verified or refined. The objectives of the current research are to expand the frontiers of product design and establisha new paradigm for the VR-based conceptual shape design system.
keywords	Virtual Reality, Multi-Sensory User Interface, Conceptual Shape Design, Sensory Interaction Mechanism
series	journal paper
last changed	2003/05/15 21:33

_id	40d7
authors	Dalyrmple, Michael and Gerzso, Michael
year	1998
title	Executable Drawings: The Computation of Digital Architecture
doi	https://doi.org/10.52842/conf.acadia.1998.172
source	Digital Design Studios: Do Computers Make a Difference? [ACADIA Conference Proceedings / ISBN 1-880250-07-1] Québec City (Canada) October 22-25, 1998, pp. 172-187
summary	Architectural designs are principally represented by drawings. Usually, each drawing corresponds to one design or aspects of one design. On the other hand, one executable drawing corresponds to a set of designs. These drawings are the same as conventional drawings except that they have computer code or programs embedded in them. A specific design is the result of the computer executing the code in a drawing for a particular set of parameter values. If the parameters are changed, a new design or design variation is produced. With executable drawings, a CAD system is also a program editor. A designer not only designs by drawing but also programming. It fuses two activities: the first, drawing, is basic in architectural practice; and the second, progamming, or specifying the relation of outputs from inputs, is basic in computer system development. A consequence of executable drawings is that architectural form is represented by graphical entities (lines or shapes) as well as computer code or programs. This type of architecture we call digital architecture. Two simple examples are presented: first, the design of a building in terms of an executable drawing of the architects, Sangallo the Younger and Michelangelo, and second, a description of an object oriented implementation of a preliminary prototype of an executable drawing system written in 1997 which computes a simple office layout.
series	ACADIA
email
last changed	2022/06/07 07:55

_id	6594
authors	Emdanat, Samir S and Vakalo, Emmanuel G.
year	1997
title	SHAPE GRAMMARS: AN ASSESSMENT OF THEIR UTILITY IN ARCHITECTURE
doi	https://doi.org/10.52842/conf.caadria.1997.313
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. 313-321
summary	Shape grammars are generative formalisms that allow spatial computations to be carried out on shapes. This paper examines the assumptions, methodologies, and formalisms underlying shape grammar research in relation to architectural form and its making. The paper first establishes the criteria for evaluating the adequacy of a given generative system. Then, it applies them to the evaluation of the shape grammar formalism. Issues of the representation of style and language, procedural and declarative knowledge representation, as well as, the specificity and generalizability of the formalism will be addressed. The paper argues that, in its present state, shape grammar leaves a great deal to be desired in terms of its descriptive power and generalizability. The paper concludes by exploring some of the desired characteristics for languages of architectural form.
series	CAADRIA
type	normal paper
last changed	2022/06/07 07:55

_id	6707
authors	Jakimowicz, A., Barrallo, J. and Guedes, E.M.
year	1997
title	Spatial Computer Abstraction: From Intuition to Genetic Algorithms
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 917-926
summary	Many of the emblematic buildings constructed at present shows many formal and technological innovations that have not been satisfactorily resolved by the existing CAAD software. Frank 0. Gehry's Guggenheim Museum in Bilbao is a good example of architecture whose shapes and design are very advanced from the concepts and tools used by CAAD. The search for new creative resources, from the educational and professional point of view, must be a priority. This will be the only way to get that CAAD contributes essentially in the process of architectural innovation, instead of merely being a reproduction tool. From this viewpoint the computer exploration of the three dimensional form is presented in here. The concept of abstract art, that has been successfully applied to painting and sculpture in this century is used as a way to experiment, design and create architecture. This paper juxtaposes three approaches, three different ways of understanding the abstract character, with the purpose to create new objects and environments, which are exclusively characteristic for computer space. This juxtaposition shows how creative and innovative activities in the field of CAAD can be developed using different intellectual bases: intuition, mathematical formulas and genetic algorithms.
series	CAAD Futures
email
last changed	1999/04/06 09:19

_id	a017
authors	Krawczyk, Robert J.
year	1997
title	Programs as Pencils: Investigating Form Generation
doi	https://doi.org/10.52842/conf.acadia.1997.095
source	Design and Representation [ACADIA ‘97 Conference Proceedings / ISBN 1-880250-06-3] Cincinatti, Ohio (USA) 3-5 October 1997, pp. 95-109
summary	This paper reviews two projects undertaken in a CAD programming course that demonstrate to the students how programs could be developed to investigate possible architectural forms. The projects highlight a very sequential approach to form investigation in using both common geometries and the introduction of randomness to control design rules. This approach stressed the development of rules and evaluating their results as a method to determine the next step to investigate. Equal importance was placed on the anticipated, as well as, the unexpected.
series	ACADIA
email
last changed	2022/06/07 07:51

_id	8b35
authors	Maher, M.L., Simoff, S.J. and Mitchell, J.
year	1997
title	Formalising building requirements using an Activity/Space Model
source	Automation in Construction 6 (2) (1997) pp. 77-95
summary	The specification of the spatial requirements for a building is the basis for the architectural design of the building. The specification usually takes the form of an extensive text-based document, a briefing database for large projects, or informal discussion between the architect and the client for a small project. The specification of a building is still a hand-crafted presentation of information that is neither carried forward to the next stage of the life cycle of the building, nor formalised so that it can be effectively used for another project. This paper presents a model, specifically developed to capture the idiosyncrasies of specifying buildings, that has the potential to provide the basis for specifying buildings more generally and could provide the basis for facilitating the generation of new designs or the reuse of existing designs. The model makes explicit the representation of activities, spaces and their relationships. The continued development of the Activity/Space (A/S) Model not only provides a formal representation of requirements, but could provide a standard for product modelling of buildings.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	efa4
authors	Pellitteri, G.
year	1997
title	A tool for a first analysis of architectural facades
source	Automation in Construction 5 (5) (1997) pp. 379-391
summary	This work presents a tool for analysing the figurative structure of architectural façades. The procedure begins by singling out the elementary shapes which make up the façade image; it detects and identifies them as "area objects", even if present in combination in virtual or mental form and groups them into classes of equal objects. A second step is the analysis of the inner structure of the classes: equidistant, arithmetical and geometrical sequences, or alternate distances are distinguished.The procedure ends by singling out the symmetries which structure the façade image and displaying them, pointing out their implied hierarchy through a thickness differentiation.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:23

_id	e941
authors	Sariyildiz, Sevil, Durmisevic, Sanja and Ploco, Jasmina
year	1997
title	Pattern Grammar within the Language of Architecture
source	AVOCAAD First International Conference [AVOCAAD Conference Proceedings / ISBN 90-76101-01-09] Brussels (Belgium) 10-12 April 1997, pp. 299-311
summary	Technology plays an important role in the design and designing process, influencing the architectural expressions and giving an impulse to new developments of architectural language. It has been allways the stimulating push for the generation of new concepts, spaces and technics in architectural design. Especially the developments, in the field of material technology and construction industry. Lately, Information and Communication Technology (ICT) pledge to have an important impact on designing practice as well as a part of the technological developments. In order to widen the application of CAAD in designers realm, it is necessary to interpose new design tools and methods. This means introducing CAAD more as a "designing tool" and making its employment feasible from the very first stages of design process - during the conceptual phase. Pattern Grammars, which we will introduce in this paper is such a method that provides support to designers, architects and urban planners. These patterns, based on complex 3D spatial geometrical polyhedra and polytopes, when generated, have form and structure at the same time. Parallel with geometry creation, aspects such as accessibility, functionality and integrity of a building should be taken in consideration as well. Working with pattern grammar within CAAD environment, enables faster generating of concepts and examination of spatial qualities, offering at the same time higher standards of design flexibility and enormous variety. It also introduces new design approaches to stimulate the innovative ideas concerning the design. This, altogether, represents an added value of CAAD.
keywords	CAAD Tools, Pattern Grammar, Substitution Method
series	AVOCAAD
last changed	2005/09/09 10:48

_id	6f61
authors	Turkiyyah, G.M., Storti, D.W., Ganter, M., Hao, C. and Vimawala, M.
year	1997
title	An accelerated triangulation method for computing the skeletons of free-form solid models
source	Computer-Aided Design, Vol. 29 (1) (1997) pp. 5-19
summary	Shape skeletons are powerful geometric abstractions that provide useful intermediate representations for a number of geometric operations on solid models includingfeature recognition, shape decomposition, finite element mesh generation, and shape design. As a result there has been significant interest in the development of effectivemethods for skeleton generation of general free-form solids. In this paper we describe a method that combines Delaunay triangulation with local numerical optimizationschemes for the generation of accurate skeletons of 3D implicit solid models. The proposed method accelerates the slow convergence of Voronoi diagrams to theskeleton, which, without optimization, would require impractically large sample point sets and resulting messhes to attain acceptable accuracy. The Delaunaytriangulation forms the basis for generating the topological structure of the skeleton. The optimization step of the process generates the geometry of the skeleton patchesby moving the vertices of Delaunay tetrahedra and relocating their centres to form maximally inscribed spheres. The computational advantage of the optimization schemeis that it involves the solution of one small optimization problem per tetrahedron and its complexity is therefore only linear (O(n)) in the number of points used for theskeleton approximation. We demonstrate the effectiveness of the method on a number of representative solid models.
keywords	Skeleton Generation, Medial Axis, Delaunay Triangulation, Surface Curvature, Implicit Solid Models
series	journal paper
last changed	2003/05/15 21:33

_id	caadria2006_633
id	caadria2006_633
authors	WAN-YU LIU
year	2006
title	THE EMERGING DIGITAL STYLE: Attention shift in architectural style recognition
doi	https://doi.org/10.52842/conf.caadria.2006.x.g4f
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 633-635
summary	“Style” has long been an important index to observe the design thinking of designers in architecture. Gombrich (1968) defined style as a particular selection from the alternatives when doing things; Ackerman (1963) considered that a distiguishable ensemble of certain characteristics we call a style; Schapiro (1961) pointed out that style is constant forms, and sometimes the constant elements, qualities and expression; Kirsch (1998), Cha and Gero (1999) thought of style as a form element and shape pattern. As Simon and others referred to, style emerged from the process of problem solving, Chan (1994, 2001) ever devised a serious of experiments to set up the operational definitions of style, further five factors that relate to generating styles. Owing to that the greater part of sketches and drawings in the design process couldn’t be replaced by computer-aided design systems (Eisentraut, 1997), designers must shift between different problem-solving methods while facing different design problems. The purpose in this research is to discuss the influences of computer usage on style generation and style recognition: The employment of certain procedural factors that occurred in the design processes that using conventional media is different from the ones that using computer media? Do personal styles emerge while designers shifting between different media in the design processes? Does any unusual phenomenon emerge while accustomed CAD-systems designers recognizing a style?
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	ce11
authors	Bradford, J., Wong, W.S. and Tang, H.F.
year	1997
title	Bridging Virtual Reality to Internet for Architecture
doi	https://doi.org/10.52842/conf.ecaade.1997.x.m9r
source	Challenges of the Future [15th eCAADe Conference Proceedings / ISBN 0-9523687-3-0] Vienna (Austria) 17-20 September 1997
summary	This paper presents a virtual reality interface tool which allows a user to perform the following action : 1.Import design from other CAD tools. 2.Assemble an architecture structure from a library of pre-built blocks and geometry primitives dynamically created by user. 3.Export the design interactively in VRML format back to the library for Internet browsing. The geometry primitives include polygon, sphere, cone, cylinder and cube. The pre-built blocks consist of fundamental architecture models which have been categorized with architectural related style, physical properties and environmental attributes. Upon a user’s request, the tool or the composer, has the ability to communicate with the library which indeed is a back-end distributed client-server database engine. The user may specify any combination of properties and attributes in the composer which will instantly bring up all matching 3-dimensional objects through the database engine. The database is designed in relational model and comes from the work of another research group.
keywords	Virtual Reality, Architecture Models, Relational Database, Client-Server
series	eCAADe
email
more	http://info.tuwien.ac.at/ecaade/proc/bradford/bradford.htm
last changed	2022/06/07 07:50

_id	0bc0
authors	Kellett, R., Brown, G.Z., Dietrich, K., Girling, C., Duncan, J., Larsen, K. and Hendrickson, E.
year	1997
title	THE ELEMENTS OF DESIGN INFORMATION FOR PARTICIPATION IN NEIGHBORHOOD-SCALE PLANNING
doi	https://doi.org/10.52842/conf.acadia.1997.295
source	Design and Representation [ACADIA ‘97 Conference Proceedings / ISBN 1-880250-06-3] Cincinatti, Ohio (USA) 3-5 October 1997, pp. 295-304
summary	Neighborhood scale planning and design in many communities has been evolving from a rule-based process of prescriptive codes and regulation toward a principle- and performance-based process of negotiated priorities and agreements. Much of this negotiation takes place in highly focused and interactive workshop or 'charrette' settings, the best of which are characterized by a fluid and lively exchange of ideas, images and agendas among a diverse mix of citizens, land owners, developers, consultants and public officials. Crucial to the quality and effectiveness of the exchange are techniques and tools that facilitate a greater degree of understanding, communication and collaboration among these participants. Digital media have a significant and strategic role to play toward this end. Of particular value are representational strategies that help disentangle issues, clarify alternatives and evaluate consequences of very complex and often emotional issues of land use, planning and design. This paper reports on the ELEMENTS OF NEIGHBORHOOD, a prototype 'electronic notebook' (relational database) tool developed to bring design information and example 'to the table' of a public workshop. Elements are examples of the building blocks of neighborhood (open spaces, housing, commercial, industrial, civic and network land uses) derived from built examples, and illustrated with graphic, narrative and numeric representations relevant to planning, design, energy, environmental and economic performance. Quantitative data associated with the elements can be linked to Geographic Information based maps and spreadsheet based-evaluation models.
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:52

_id	460e
authors	Dannettel, Mark E
year	1997
title	Interactive Multimedia Design: Operational Structures and Intuitive Environments for CD-ROM
doi	https://doi.org/10.52842/conf.caadria.1997.415
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. 415-427
summary	This paper presents practical design concepts for the production of CD-ROMs or on-line media projects which are intended for scholastic and professional use. It is based on the experience and knowledge which has been gained while developing a multimedia package here at the Department of Architecture at CUHK. The package deals exclusively with the technical issue of vertical transportation in buildings, and is intended to be used as a design tool in professional offices, as well as in classroom settings. The required research and production for the development of the structures, formats, and interfaces of this project, along with the consequential evaluation and revision of this work, has led to a greater understanding of appropriate applications for interactive interactive multimedia designs. Specially, the paper addresses the fundamental issues of ‘user-format’, and a distinction is made between applications which operate as ‘tools’ and those which operate as ‘resources’. Descriptions are provided for both types of operational formats, and suggestions are made as to how one might decided which format would be appropriate for a specific project. Briefly, resource produces imply that a user actively pursues information in a relatively static environment, while tool procedures imply that a user works jointly with the software to process information and arrive at a unique output. This distinction between the two formats is mostly grounded in the design of the structure and user-interface, and thus the point is made that the material content of the application does not necessarily imply a mandatory use of either format. In light of this observation that an application’s format relies on the appropriateness of operational procedures, rather than on its material content, further discussions of the implications of such procedures (using a ‘resource’ vs. using a ‘tool’) are provided.
series	CAADRIA
email
last changed	2022/06/07 07:55

_id	2d60
authors	Schwenck, M. and Sariyildiz, S.
year	1997
title	An Integrated Software Environment for the Architectural Design Process
source	Proceedings of the International Conference on Applications of Computer Science and Mathematics in Architecture and Building Science (IKM 1997), Weimar, Germany
summary	Many software systems are in common use in the field of architectural design. On the other hand, we consider a complete automation of architectural design as an unlikely proposition and undesirable for the architect. Therefore, the general objective is to support the designer during the whole process of architectural design in order to increase the efficiency and to improve the quality of the results. So far there are different tools providing such functionality. Nevertheless, there are no appropriate tools for many of the sub-processes. Furthermore, the current state of available design software is characterised by a lack of integration of different tools. In this paper we will provide a survey on a project dealing with the solution of both problems. First we will give a general description of the support that software can provide to architects during the design process. We conclude that many different tools are needed which have to be integrated in an open, modular, distributed, user friendly and efficient environment. We will explain the necessity of integration and cover integration technologies. Besides the aspect of integration we also deal with the development of tools which can operate in the integrated design environment. We suggest a strategy where the tool functions are specified on the basis of a transformation from hierarchical process descriptions of architectural design into a hierarchy of tool descriptions.
series	other
last changed	2003/04/23 15:50

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