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

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Hits 1 to 20 of 395

_id 7670
authors Sawicki, Bogumil
year 1995
title Ray Tracing – New Chances, Possibilities and Limitations in AutoCAD
source CAD Space [Proceedings of the III International Conference Computer in Architectural Design] Bialystock 27-29 April 1995, pp. 121-136
summary Realistic image synthesis is nowadays widely used in engineering applications. Some of these applications, such as architectural, interior, lighting and industrial design demand accurate visualization of non-existent scenes as they would look to us, when built in reality. This can only be archived by using physically based models of light interaction with surfaces, and simulating propagation of light through an environment. Ray tracing is one of the most powerful techniques used in computer graphics, which can produce such very realistic images. Ray tracing algorithm follows the paths of light rays backwards from observer into the scene. It is very time consuming process and as such one could not be developed until proper computers appeared, In recent years the technological improvements in computer industry brought more powerful machines with bigger storage capacities and better graphic devices. Owing to increasing these hardware capabilities successful implementation of ray tracing in different CAD software became possible also on PC machines. Ray tracing in AutoCAD r.12 - the most popular CAD package in the world - is the best of that example. AccuRender and AutoVision are an AutoCAD Development System (ADS) applications that use ray tracing to create photorealistic images from 3D AutoCAD models. These ,internal"' applications let users generate synthetic images of threedimensional models and scenes entirely within AutoCAD space and show effects directly on main AutoCAD screen. Ray tracing algorithm accurately calculates and displays shadows, transparency, diffusion, reflection, and refraction from surface qualities of user-defined materials. The accurate modelling of light lets produce sophisticated effects and high-quality images, which these ray tracers always generates at 24-bit pixel depth,"providing 16,7 million colours. That results can be quite impressive for some architects and are almost acceptable for others but that coloured virtual world, which is presented by ray tracing in AutoCAD space in such convincing way, is still not exactly the same as the real world. Main limitations of realism are due to the nature of ray tracing method Classical ray tracing technique takes into account the effects of light reflection from neighbouring surfaces but, leaves out of account the ambient and global illumination arising out of complex interreflections in an environment. So models generated by ray tracing belong to an "ideal" world where real materials and environment can't find their right place. We complain about that fact and say that ray tracing shows us "too specular world", but (...) (...) there is anything better on the horizon? It should be concluded, that typical abilities of today's graphics software and hardware are far from exploited. As was observed in literature there have been various works carried along with the explicit intention of overcoming all these ray tracing limitations, These researches seem to be very promising and let us hope that their results will be seen in CAD applications soon. As it happens with modelling, perhaps the answer will come from a variety of techniques that can be combined together with ray tracing depending on the case we are dealing with. Therefore from the point of view of an architects that try to keep alive some interest on the nature of materials and their interaction with form, "ray tracing" seems to be right path of research and development that we can still a long way follow, From the point of view of the school, a critical assimilation of "ray tracing" processes is required and one that might help to determinate exactly their distortions and to indicate the correct way of its development and right place in CAAD education. I trust that ray tracing will become standard not only in AutoCAD but in all architectural space modelling CAD applications and will be established as a powerful and real tool for experimental researches in architectural design process. Will be the technological progress so significant in the nearest future as it is anticipated?
series plCAD
last changed 2000/01/24 10:08

_id c642
authors Andersen, T. and Carlsen, N.V.
year 1995
title Software design of maintainable knowledge-based systems for building design
source Automation in Construction 4 (2) (1995) pp. 101-110
summary Identifying and establishing a basic structure for knowledge representation is one of the keys to successful design of knowledge-based computer systems. In Building Design and Construction, this initial knowledge structure can be achieved by utilizing a query driven approach to software engineering. As (user) queries reflect the user's demand for in/output, it is natural to link the overall user dialogue with key elements in the knowledge base direct connections between user screen and objects in the knowledge base support prototyping and testing the application during development. However, the price for pursuing this approach in its pure form can be high, as needs for later maintenance and augmentation of the system can be very hard to fulfill. To overcome these problems, a strict user interlace, software separation strategy must be. introduced at early stages of software design. and implemented as a global control module as independent of the knowledge processing as possible.
keywords Knowledge-based; Query driven: Software design; User interlace: Separation; Maintainable systems
series journal paper
more http://www.elsevier.com/locate/autcon
last changed 2003/06/02 09:35

_id b914
authors Asanowicz, Aleksander and Asanowicz, Katarzyna
year 1995
title Designing, CAD and CAD
source CAD Space [Proceedings of the III International Conference Computer in Architectural Design] Bialystock 27-29 April 1995, pp. 181-192
summary The general aim of our discussion is to analyze what has been changed in design process according to introducing the computers technology. For the better understanding of the design process evolution, we should precisely define start point - the traditional design process.Let's treat it as an iteration game between a designer and user. If we assume that the designing base is a reductive strategy, we can define six stages of it: 1.) To define a need; 2.) To formulate a task; 3.) To synthesize a design proposals; 4.) To analyze and optimize; 5.) To make a presentation. // The last stage - the presentation of designing proposals is the main factor of using computers in design process and creating definition of CAD as Computer Aided Drafting. According to this interpretation CAD has included four groups of activities: A.) Geometrical modelling; B.) Analysis; C.) Revision and estimation of design proposals; D.) Technical drawing preparing. // Unfortunately it has no connections with another meaning of CAD - Computer Aided Design because concerns every stage of design process except of creation of architectural form. On the other hand, computer enables us to improve the design process by permanent perception of designing forms and dynamic control over the transforming structure. Nowadays thanks to full-function sketching workstation and software like Fractal Design Painter a computer can be useful from the moment when the first line is drawing. It is possible, that the new generation of CAD software - CAD with Personality which connects computer models with picture transformation will enable CAD to be Computer Aided Design.
series plCAD
email
last changed 2000/01/24 10:08

_id 4931
authors Breen, Jack
year 1996
title Learning from the (In)Visible City
doi https://doi.org/10.52842/conf.ecaade.1996.065
source Education for Practice [14th eCAADe Conference Proceedings / ISBN 0-9523687-2-2] Lund (Sweden) 12-14 September 1996, pp. 65-78
summary This paper focuses on results and findings of an educational project, in which the participating students had to develop a design strategy for an urban plan by using and combining endoscopic and computational design visualisation techniques. This educational experiment attempted to create a link between the Media research programme titled 'Dynamic Perspective' and an educational exercise in design composition. It was conceived as a pilot study, aimed at the investigation of emerging applications and possible combinations of different imaging techniques which might be of benefit in architectural and urban design education and potentially for the (future) design practice. The aim of this study was also to explore the relationship between spatial perception and design simulation. The point of departure for the student exercise was an urban masterplan which the Dynamic Perspective research team prepared for the workshop 'the (in)visible city' as part of the 1995 European Architectural Endoscopy Association Conference in Vienna, Austria. The students taking part in the exercise were asked to develop, discuss and evaluate proposals for a given part of this masterplan by creating images through different model configurations using optical and computer aided visualisation techniques besides more traditional design media.The results of this project indicate that an active and combined use of visualisation media at a design level, may facilitate communication and lead to a greater understanding of design choices, thus creating insights and contributing to design decision-making both for the designers and for the other participants in the design process.
series eCAADe
email
more http://www.bk.tudelft.nl/Media/
last changed 2022/06/07 07:54

_id 7555
authors Brown, F., Cooper, G., Ford, S., Aouad, G., Brandon, P., Child, T., Kirkham, J., Oxman, R. and Young, B.
year 1995
title An integrated approach to CAD: modelling concepts in building design and construction
source Design Studies 16 (3) (1995) pp. 327-347
summary The ICON project is concerned with the creation of a generic information structure for the construction industry. A central feature of the information model is the use of object-oriented modelling techniques to allow information to be viewed from different 'perspectives' and at different levels of abstraction, according to the requirements of the user. This paper discusses the object modelling of concepts and information in the design area. Drawing on knowledge elicited from protocol analysis of the design activity, a series of interrelated object models has been developed, reflecting different perspectives and abstraction levels within the design domain. Three of these models (spatial design, physical design and structural design) are presented and their implications for the communication and sharing of information discussed.
series journal paper
last changed 2003/05/15 21:45

_id 940c
authors Brown, F.E. (et. al.)
year 1995
title An integrated approach to CAD: modelling concepts in building design and construction
source Design Studies, vol. 16
summary The ICON project is concerned with the creation of a generic information structure for the construction industry. A central feature of the information model is the use of object-oriented modelling techniques to allow information to be viewed from different `perspectives' and at different levels of abstraction, according to the requirements of the user. This paper discusses the object modelling of concepts and information in the design area. Drawing on knowledge elicited from protocol analysis of the design activity, a series of interrelated object models has been developed, reflecting different perspectives and abstraction levels within the design domain. Three of these models (spatial design, physical design and structural design) are presented and their implications for the communication and sharing of information discussed.
series journal paper
last changed 2003/04/23 15:50

_id ff05
authors Butelski, Kazimierz
year 1995
title A Brief Note on Virtual Space
source CAD Space [Proceedings of the III International Conference Computer in Architectural Design] Bialystock 27-29 April 1995, pp. 83-92
summary In its efforts to represent space, and then create architecture on the basis of this representation, humanity has taken three major steps. STEP 1. Representation of space in the form of a drawing or model; representations compared to the mental vision and then redrawn or remodelled, until the vision takes the shape of a finished building. This technology of design" followed different conventions, depending on the epoch. In the Middle Ages the method of approximation by triangles was introduced. The Renaissance used Projection, Elevation and Cross-Section. In order to construct a building, a flat, abstract representation is used, supplemented by a model showing spatial relations and a verbal description, impossible to convey graphically. STEP 2. Methods as in Step 1, but, beginning in the 1970s, with the use of computers, which allows also for the gradual integration of these methods in one program. Theoretically speaking, all necessary data can be now recorded, visualized, animated, etc., on a PC class computer. The design-aid software is based on the method of creating a 3D model of the whole building, and then generating the rest (projections, cross-sections) from it. STEP 3. The above step have - brought us to near- perfection in photorealistic representation of space, which remains, however only a 2D abstraction from 3D space. The next step, which is now taking place before (and in?) our very eyes, is to use systems which bring us directly into 3D space.
series plCAD
last changed 2000/01/24 10:08

_id 05f7
authors Carrara, G., Confessore, G., Fioravanti, A. and Novembri, G.
year 1995
title Multimedia and Knowledge-Based Computer-Aided Architectural Design
doi https://doi.org/10.52842/conf.ecaade.1995.323
source Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 323-330
summary It appears by now fairly accepted to many researchers in the field of the Computer Aided Architectural Design that the way to realize support tools for these aims is by means of the realization of Knowledge Based Assistants. This kind of computer programs, based on the knowledge engineering, finds their power and efficaciousness by their knowledge base. Nowadays this kind of tools is leaving the research world and it appears evident that the common graphic interfaces and the modalities of dialogue between the architect and the computer, are inadequate to support the exchange of information that the use of these tools requires. The use of the knowledge bases furthermore, presupposes that the conceptual model of the building realized by others, must be made entirely understandable to the architect. The CAAD Laboratory has carried out a system software prototype based on Knowledge Engineering in the field of hospital buildings. In order to overcome the limit of software systems based on usual Knowledge Engineering, by improving architect-computer interaction, at CAAD Lab it is refining building model introducing into the knowledge base two complementary each other methodologies: the conceptual clustering and multimedia technics. This research will make it possible for architects navigate consciously through the domain of the knowledge base already implemented.

series eCAADe
more http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_39.htm
last changed 2022/06/07 07:55

_id a84e
authors De Grassi, Mario and Giretti, Alberto
year 1995
title Applying Formal Methods to Multimedia Design Aid
doi https://doi.org/10.52842/conf.ecaade.1995.283
source Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 283-296
summary In the last decade we assisted at an evolution of computer aided design systems from drafting, calculation and simulation utilities toward systems able to support the conceptual phase of the design process. Systems supporting conceptual design use knowledge about the design domain and assume a will defined model of the design activity. Their computational framework is usually built by means of a set of representational schemata which lack a formal semantics. This aspect causes a limitation on the applicability of their computational framework to different domains. In this paper we propose a formal knowledge representation language, that has been defined in order to represent the structural relationships of domain knowledge. On the basis of language structure we propose a number of inferences tailored to case-based conceptual design aiding. Finally we apply the representational framework to the implementation of a computational architecture for conceptual design aiding that integrates multimedia representation of design cases with symbolic information processing. The architecture combines a knowledge representation server and a multimedia server. The knowledge representation server processes both domain knowledge and design experiences according to the Case Based Reasoning paradigm. The multimedia server produces the required case representation.

series eCAADe
more http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_34.htm
last changed 2022/06/07 07:55

_id cbe2
authors Fenves, S., Rivard, H., Gomez, N. and Chiou S.
year 1995
title Conceptual Structural Design in SEED
source Journal of Architectural Engineering -- December 1995 -- Volume 1, Issue 4, pp. 179-186
summary Although there are many computer-based tools for analyzing structures whose geometry, topology, and member properties have already been determined, there are very few general-purpose tools to assiststructural designers in synthesizing structural configurations to be subsequently sized, analyzed, and detailed. The comceptual-structural-design submodule of the Software Environment to Support the EarlyPhases in Building Design (SEED-Config) is intended to fill this void. The process starts with a geometric model of the building's massing, a set of functional requirements to be satisfied, and a toolkit oftechnologies capable of generating potential structural system and subsystem alternatives. Structural alternatives can be rapidly generated under designer control to the level of detail desired and evaluated against arange of criteria. Provisions are made to store design cases as well as to retrieve and adapt these to meet new requirements.
series journal paper
last changed 2003/05/15 21:45

_id c681
authors Gero, J.S. and Kazakov, V.
year 1995
title Evolving building blocks for design using genetic engineering: A formal approach
source J.S. Gero and F. Sudweeks (eds), Advances in Formal Design Methods for CAD , IFIP-University of Sydney, Sydney, pp. 29-48
summary This paper presents a formal approach to the evolution of a representation for use in a design process. The approach adopted is based on concepts associated with genetic engineering. An initial set of genes representing elementary building blocks is evolved into a set of complex genes representing targeted building blocks. These targeted building blocks have been evolved because they are more likely to produce designs which exhibit desired characteristics than the commencing elementary building blocks. The targeted building blocks can then be used in a design process. The paper presents a formal evolutionary model of design representations based on genetic algorithms and uses pattern recognition techniques to execute aspects of the genetic engineering. The paper describes how the state space of possible designs changes over time and illustrates the model with an example from the domain of two-dimensional layouts. It concludes with a discussion of style in design.
series other
email
last changed 2003/04/06 07:29

_id b5d9
authors González, Guillermo and Gutiérrez, Liliana
year 1999
title El TDE-AC: tecnología digital y estrategia pedagógica (The Tde-ac: Digital Technology and Pedagogical Strategy)
source III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 269-271
summary In 1995 the programming of a specialized, expert graphic software CA-TSD, began. The TSD acronym designates a graphic language derived from the theory of spatial delimitation, it systematizes all possibilities of selection and combination of flat and volumetric figures. It establishes necessary and sufficient morphic and tactic dimensions to account for all possible relationships of selection and combination. TSD proposes a syntactic reading of those formal, pure design operations underlying traditional representations. Tracings and complex configurations described by tree-hierarchical structures of simple configurations allow for a coherent syntactic analysis of the design structure of any object this will allow the construction of a pure design formula for the conscious and unconscious prefiguration operations of an artist or style in this presentation, we will use our proprietary CA-TSD software that will allow for fast verification of what's stated, including architecture and graphic design examples.
series SIGRADI
email
last changed 2016/03/10 09:52

_id 4248
authors Kalay, Y.E. and Skibniewski, M.J.
year 1995
title Automation in Construction: Fulfilling the promise
source Automation in Construction 4 (1) (1995) pp. 1-3
summary Three years ago, Elsevier Science B.V. has embarked on one of the most important endeavors for the A/E/C community, worldwide. With the help of three dedicated individuals, it has inaugurated a new refereed journal devoted to discussing, critically examining and disseminating the latest developments affecting the processes that lead to the design, construction and use of buildings and other facilities. Unlike other jour-nals in this field, Automation in Construction has been dedicated to exploring the processes and tools used by the A/E/C community, rather than its products. It has been dedicated to issues concerning the A/ E / C community specifically, and to methods, practices and tools that make use of computers in particular, thereby filling a void which existed, until its inauguration, within the A/E/C community's publications.
series journal paper
email
more http://www.elsevier.com/locate/autcon
last changed 2003/06/02 09:30

_id 640d
authors Koszewski, Krysztof
year 1995
title Communication of Ideas in Architecture Versus Computer Techniques
source CAD Space [Proceedings of the III International Conference Computer in Architectural Design] Bialystock 27-29 April 1995, pp. 171-180
summary Computer as a tool in architects' work is an obvious thing for near all of us. Recent two - three years have shown that probably the most revolutionary feature of computers is their immense possibility of usage in today's communication techniques, the continuous flow of information. This fact makes us to think about computer techniques as an useful tool not only in designing, but also in extensive presenting of ideas - like communication between architects and all the others involved in the designing and building process. Presenting ideas requires prior process of gathering data and storing it in computers' memory. Incredible progress in ways of organizing information leads also to the idea of developing a sketch of a standard of the amount and structure of information gathered to make it an universal set of parameters describing the design - a multi - functional database. The first part (presenting ideas) is more to be used in Poland by now. Architects should appreciate benefits of an impressive presentation and they already started to. The universal database for use by everyone, or rather a file of the project, which presentation is a part of, is rather a theory by now. But exploring it’s potential and a real need to create one - is essential.
series plCAD
email
last changed 2003/05/17 10:01

_id c7e9
authors Maver, T.W.
year 2002
title Predicting the Past, Remembering the Future
source SIGraDi 2002 - [Proceedings of the 6th Iberoamerican Congress of Digital Graphics] Caracas (Venezuela) 27-29 november 2002, pp. 2-3
summary Charlas Magistrales 2There never has been such an exciting moment in time in the extraordinary 30 year history of our subject area, as NOW,when the philosophical theoretical and practical issues of virtuality are taking centre stage.The PastThere have, of course, been other defining moments during these exciting 30 years:• the first algorithms for generating building layouts (circa 1965).• the first use of Computer graphics for building appraisal (circa 1966).• the first integrated package for building performance appraisal (circa 1972).• the first computer generated perspective drawings (circa 1973).• the first robust drafting systems (circa 1975).• the first dynamic energy models (circa 1982).• the first photorealistic colour imaging (circa 1986).• the first animations (circa 1988)• the first multimedia systems (circa 1995), and• the first convincing demonstrations of virtual reality (circa 1996).Whereas the CAAD community has been hugely inventive in the development of ICT applications to building design, it hasbeen woefully remiss in its attempts to evaluate the contribution of those developments to the quality of the built environmentor to the efficiency of the design process. In the absence of any real evidence, one can only conjecture regarding the realbenefits which fall, it is suggested, under the following headings:• Verisimilitude: The extraordinary quality of still and animated images of the formal qualities of the interiors and exteriorsof individual buildings and of whole neighborhoods must surely give great comfort to practitioners and their clients thatwhat is intended, formally, is what will be delivered, i.e. WYSIWYG - what you see is what you get.• Sustainability: The power of «first-principle» models of the dynamic energetic behaviour of buildings in response tochanging diurnal and seasonal conditions has the potential to save millions of dollars and dramatically to reduce thedamaging environmental pollution created by badly designed and managed buildings.• Productivity: CAD is now a multi-billion dollar business which offers design decision support systems which operate,effectively, across continents, time-zones, professions and companies.• Communication: Multi-media technology - cheap to deliver but high in value - is changing the way in which we canexplain and understand the past and, envisage and anticipate the future; virtual past and virtual future!MacromyopiaThe late John Lansdown offered the view, in his wonderfully prophetic way, that ...”the future will be just like the past, onlymore so...”So what can we expect the extraordinary trajectory of our subject area to be?To have any chance of being accurate we have to have an understanding of the phenomenon of macromyopia: thephenomenon exhibitted by society of greatly exaggerating the immediate short-term impact of new technologies (particularlythe information technologies) but, more importantly, seriously underestimating their sustained long-term impacts - socially,economically and intellectually . Examples of flawed predictions regarding the the future application of information technologiesinclude:• The British Government in 1880 declined to support the idea of a national telephonic system, backed by the argumentthat there were sufficient small boys in the countryside to run with messages.• Alexander Bell was modest enough to say that: «I am not boasting or exaggerating but I believe, one day, there will bea telephone in every American city».• Tom Watson, in 1943 said: «I think there is a world market for about 5 computers».• In 1977, Ken Olssop of Digital said: «There is no reason for any individuals to have a computer in their home».The FutureJust as the ascent of woman/man-kind can be attributed to her/his capacity to discover amplifiers of the modest humancapability, so we shall discover how best to exploit our most important amplifier - that of the intellect. The more we know themore we can figure; the more we can figure the more we understand; the more we understand the more we can appraise;the more we can appraise the more we can decide; the more we can decide the more we can act; the more we can act themore we can shape; and the more we can shape, the better the chance that we can leave for future generations a trulysustainable built environment which is fit-for-purpose, cost-beneficial, environmentally friendly and culturally significactCentral to this aspiration will be our understanding of the relationship between real and virtual worlds and how to moveeffortlessly between them. We need to be able to design, from within the virtual world, environments which may be real ormay remain virtual or, perhaps, be part real and part virtual.What is certain is that the next 30 years will be every bit as exciting and challenging as the first 30 years.
series SIGRADI
email
last changed 2016/03/10 09:55

_id 4b78
authors Piccolotto, Moreno and Rio, Olga
year 1995
title Structural Design Education with Computers
doi https://doi.org/10.52842/conf.acadia.1995.285
source Computing in Design - Enabling, Capturing and Sharing Ideas [ACADIA Conference Proceedings / ISBN 1-880250-04-7] University of Washington (Seattle, Washington / USA) October 19-22, 1995, pp. 285-298
summary In this paper, we discuss the importance of computer based simulation tools for the education of architects and civil engineers. We present our efforts to develop a program for the simulation of structures (CASDET). CASDET forms a microworld for planar structures. The program enables students to compose structures and to experiment interactively the effects of different geometry and load configurations. It tries to identify the proposed structure and controls its stability. Upon request of the student, it also processes displacements, internal forces (moments, shear forces etc.) and reaction forces on supports. The students can then visualise the desired information by interacting directly with the structure or member(s) of interest (see fig.1). We present different methods, with which students can visualise the results of their actions and discuss their implications in the educational context.
keywords Structural Design Education, Microworlds, Learning Environment, CAI
series ACADIA
email
last changed 2022/06/07 08:00

_id c28b
authors Rostanski, Krzysztof and Bugno, Agnieszka
year 1995
title Greenery Designing in CAD Programs
source CAD Space [Proceedings of the III International Conference Computer in Architectural Design] Bialystock 27-29 April 1995, pp. 15-23
summary In this article we want to present our experiences with greenery designing and possibilities of presentation such designs using CAD programs. Architectural design is more than only building - we always try to show how it is connected with surrounding. Greenery is one of the most important element of space, it creates environment, CAD programs gives us a lot of possibilities for presentations of architectural designs, but they are very limited in as to showing greenery. The very useful thing in computer aided landscaping is the plant specifier and the simulator of plants growth, You can estimate number of trees used for design and shades of tree crowns and quickly correct the plan to avoid effect of shading the windows or other places. CAD programs of the international range are not very adequate to plants selection, because the plants in database are not suitable for polish climate. For example, LANDCADD"s Plant Specifier contain information about more than 1000 plants of different climate zones from all over the world (trees, shrubs and flowers.), but in Poland we use commonly about 1500 of only trees and shrubs, the number of flowers is even bigger, so this specifier seems to be completely inadequate to our country. As to visual presentations of plants in design they are to simple to express the diversity of plant species and their shapes. There are no possibilities for common computers to process such great number of data to create natural outlook of designed trees.
series plCAD
last changed 2000/01/24 10:08

_id 07da
authors Wohlers, T.
year 1995
title 3D Digitizers for Engineering
source Computer Graphics World, (March 1995), p. 112-115
summary 3D digitizing systems permit you to create a digital model from a physical part. The process is appealing because it can be difficult to create models of complex objects using computer tools without the aid of a 3D input device. Recreating an existing part from scratch, even with a computer, is like copying a printed page by retyping it. Although 3D digitizers are not as straightforward as a photocopy machine, the intent is the same. You can render and print a digitized model to communicate shape information, extract dimensions from it to show size information, and use the 3D database to manufacture a replica using rapid prototyping (RP) and CNC machines. You can also include the 3D model in multimedia or animation software as a learning or assembly aid. The challenge of the digitization process in manufacturing is to capture adequate detail and resolution. Adding a digitized model to a Hollywood film is often much easier than reverse engineering a part for prototyping or manufacturing. The only criteria for a movie or TV commercial is whether or not it looks good. No one from the audience measures the object to see if it meets a given tolerance. In manufacturing, RP and CNC machines require clean, complete, and accurate information. If areas on the model are incomplete or missing, it may be difficult or impossible to build the part. If edges, grooves, and features of the part are not fine and crisp, the results may be less than satisfactory. Most 3D digitizing systems are best at digitizing organic shapes such as free-form sculpted surfaces. When you see an advertisement or a catalog from companies offering digitized models, often you see objects such as human anatomy, animals, bones, skeletons, and so on. You may also see cars, trucks, motorcycles and airplanes, although they can be more difficult to digitize. Highly engineered parts, such as enclosures for electronic devices are usually the most difficult for 3D digitizers. That's why these systems aren't used widely for the reverse engineering of precision mechanical parts.
series journal paper
last changed 2003/04/23 15:50

_id e75d
authors Achten, H., Dijkstra, J., Oxman, R. and Bax, Th.
year 1995
title Knowledge-Based Systems Programming for Knowledge Intensive Teaching
doi https://doi.org/10.52842/conf.ecaade.1995.139
source Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 139-148
summary Typological design implies extensive knowledge of building types in order to design a building belonging to a building type. It facilitates the design process, which can be considered us a sequence of decisions. The paper gives an outline of a new approach in a course teaching typological knowledge through the medium of Knowledge-Based Systems programming. It demonstrates how Knowledge-Based Systems offer an appropriate structure for analysing the knowledge required to implement typological design. The class consists of third-year undergraduate students with no extensive previous programming experience. The implementation language is AutoLISP which operates in the AutoCAD environment. The building type used in the course is the office building. in order to become acquainted with both building type and programming in AutoLISP, information and instructions have been gathered and prestructured, including a worked out analysis and AutoLISP code. Office plans are generated through use of the Knowledge-Based System. They are encoded in the form of frames. At the end of the course the students will have learned the basics of Knowledge-Based Systems, have been introduced to programming these systems, have analysed and reflected upon the design process, and gained insight into a specific building type.
series eCAADe
email
more http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_18.htm
last changed 2022/06/07 07:54

_id 0c8e
authors Ager, Mark Thomas and Sinclair, Brian R.
year 1995
title StereoCAD: Three Dimensional Representation
source Sixth International Conference on Computer-Aided Architectural Design Futures [ISBN 9971-62-423-0] Singapore, 24-26 September 1995, pp. 343-355
summary Concepts of stereoscopic vision have been around for more than two thousand years. Despite this long history, its application to the field to architecture and design seems relatively unexplored. Synthesis of two technologies, the stereoscope and the computer, was the focus of the present study. The goal of the research was to determine if computer-generated stereoscopic pairs hold value for architectural design. Using readily available computer technology (Apple Macintosh) the research team modelled and rendered an existing project to verify the degree of correlation between the physical construct, the computer 3D model and resultant correlation between the physical construct, the computer 3D model and resultant rendered stereo-paired representation. The experiments performed in this study have shown that producing stereo-paired images that highly correlate to reality is possible using technology that is readily available in the marketplace. Both the technology required to produce (i.e., personal computer and modelling/rendering software) and view (i.e., modified stereoscope) the images is unimposing. Both devices can easily fit in a studio or a boardroom and together can be utilized effectively to permit designers, clients and end-users to experience proposed spaces and projects. Furthermore, these technologies are familiar (clients and end-users have already experienced them in other applications and settings) and assume a fraction of the cost of more dynamic, immersive virtual reality systems. Working from this base, limitations of the process as well as future applications of computer-generated stereoscopic images are identified.
keywords Stereovision, Representation, Computers, Architects, Design
series CAAD Futures
last changed 2003/11/21 15:15

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