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

_id	bf5f
authors	Chen, Xiangping
year	1995
title	Representation, Evaluation and Edition of Feature-based and Constraint- based Design
source	Purdue University
summary	This thesis investigates a general and systematic approach to feature-based and constraint-based design. We combine feature-based design and constraint-based design by globally decomposing a design into a sequence of feature attachments and locally defining and positioning each feature by constraints. Analogous to the concept of high-level programming languages, we formalize a layered design model that eliminates the dependency of a design representation on a solid modeler. With this design model, design intent, such as feature descriptions and constraints, is stored in an unevaluated, modeler-independent design representation while the geometry to which it corresponds is stored in an evaluated, modeler-dependent design representation. The separation essentially relies on a naming and matching schema that converts between a geometric reference and a generic name, and a design compiler that automatically instantiates the unevaluated design representation to an evaluated design representation with respect to a solid modeler. The geometric references for defining feature attributes and constraints are recorded with their generic names in the unevaluated design representation. We propose several techniques for naming geometric entities unambiguously. The design compilation or instantiation involves remapping a generic name back to a geometric reference in the selected geometric modeler, solving constraints and implementing feature operations or attachments. Instead of developing a constraint solver for this design compiler, we use an independent and general solver. Feature attachment operations are different from classical Boolean operations in solid modeling. However, we provide a semantics for them that is based on existing operations in solid modeling. The layered design model allows users to edit archived conceptual designs to derive new designs quickly. We investigate the coordination of later features in the unevaluated and modeler-independent representation when a feature is edited and provide a method for editing feature-based and constraint-based design. We also discuss how to extend this work to a commercial feature-based and constraint-based CAD system.
series	thesis:PhD
last changed	2003/02/12 22:37

_id	64bf
authors	Chuah, M.C., Roth, S.F., Mattis, J., and Kolojejchick, J.A.
year	1995
title	SDM: Selective Dynamic Manipulation of Visualizations
source	Proceedings of UIST‘95, ACM Symposium on User Interface Software and Technology, Pittsburg. 61-70
summary	In this paper we present a new set of interactive techniques for 2D and 3D visualizations. This set of techniques is called SDM (Selective Dynamic Manipulation). Selective, indicating our goal for providing a high degree of user control in selecting an object set, in selecting interactive techniques and the properties they affect, and in the degree to which a user action affects the visualization. Dynamic, indicating that the interactions all occur in real-time and that interactive animation is used to provide better contextual information to users in response to an action or operation. Manipulation, indicating the types of interactions we provide, where users can directly move objects and transform their appearance to perform different tasks. While many other approaches only provide interactive techniques in isolation, SDM supports a suite of techniques which users can combine to solve a wide variety of problems.
series	other
last changed	2003/04/23 15:14

_id	80df
authors	Cook, Alan R.
year	1995
title	Stereopsis in the Design and Presentation of Architectural Works
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. 113-137
doi	https://doi.org/10.52842/conf.acadia.1995.113
summary	This article presumes the primacy of spatial cognition in evaluating architectural designs and begins by describing key concepts involved in the perception of spatial form, focussing on parallax and stereoscopy. The ultimate emphasis is directed at presenting techniques which employ computers with modest hardware specifications and a basic three-dimensional modeling software application to produce sophisticated imaging tools. It is argued that these techniques are comparable to high end computer graphic products in their potentials for carrying information and in some ways are superior in their speed of generation and economies of dissemination. A camera analogy is considered in relation to controlling image variables. The ability to imply a temporal dimension is explored. An abbreviated summary of pertinent binocular techniques for viewing stereograms precedes a rationalization and initiation for using the cross-convergence technique. Ways to generate and view stereograms and other multiscopic views using 3-D computer models are described. Illustrations from sample projects show various levels of stereogram rendering including the theoretically 4-D wireframe stereogram. The translated perspective array autostereogram is presented as an economical and easily reproducible alternative to holography as well as being a substitute for stop action animation.
series	ACADIA
email
last changed	2022/06/07 07:56

_id	2036
authors	Dzeng, R.J.
year	1995
title	Caseplan: A Case-based Planer and Scheduler for Construction Using Product Modeling
source	University of Michigan
summary	Construction planning and scheduling are important to contractors for estimating the cost and duration of a project they are to bid on and construct. Many projects specify incentive and disincentive clauses for completing projects early and late. The timely completion and success of a project rely on good planning and scheduling. Contractors who repeatedly build the same kind of facilities acquire experience in scheduling the needed construction work. When parts of a facility's design are copied from one project to the next, the previously developed schedules could possibly be reused to schedule future work. This dissertation presents a construction planner and scheduler, named CasePlan, that automates the planning and scheduling process through the use of experience encoded in cases. CasePlan enables a contractor to specify a facility design using a product model, describe the relationships between product components and parts of a schedule (e.g., activity subnetworks, construction crews), and store this information as a case. As a decision support tool, CasePlan enables the contractor to search for cases whose facility designs are similar to that of a new project. The similarity assessment is based on the relative importance values that the contractor assigns to the components and their attributes in the product model. As an automation tool, CasePlan creates the schedule of a new project by reusing parts of the schedules whose associated designs are most similar to that project's design. The result is a schedule in which construction alternatives are chosen from those used in previous cases based on the new project scheduling constraints. The contractor / system-user can interact with CasePlan during its operation or modify the resulting schedule to add detail needed for executing the schedule in the field. Two types of construction projects have been studied for the development of CasePlan. One is the Kit-of-Parts post offices, in which designs are made by reusing design modules defined as Parts. The other is the boiler erection for fossil-fueled power plants, in which the design process is standardized and component configurations are similar across designs. These projects were chosen because their schedules are similar within each project type, which suggested that practitioners had a high incentive and were likely to reuse schedules. CasePlan's similarity assessment for boiler erection projects was validated using a survey. CasePlan's schedules and usability was subjectively evaluated also by the interviewed professionals.
series	thesis:PhD
email
last changed	2003/02/12 22:37

_id	ddssup9609
id	ddssup9609
authors	Hall, A.C.
year	1996
title	Assessing the Role of Computer Visualisation in Planning Control: a recent case study
source	Timmermans, Harry (Ed.), Third Design and Decision Support Systems in Architecture and Urban Planning - Part two: Urban Planning Proceedings (Spa, Belgium), August 18-21, 1996
summary	In papers to previous DDSS Conferences, and elsewhere, the author has developed an argument concerning the use of computer visualisation in the planning process. In essence, it proposes that: • visualisation can enable lay persons to play a more effective role and this can result in different and more effective decisions; • the level of realism employed should result from the basic requirements necessary to resolve the issue minimising the cost of production of the images. These points have been tested in repeated examples. The latest one concerns a new site that Anglia Polytechnic University has established in the centre of Chelmsford, UK. A computer model of the new campus showing both the existing and proposed buildings was commissioned from the author by the University for a visit by HM the Queen in June 1995. This model was subsequently adapted for use in the process of obtaining planning consent and the marketing of floorspace for the next building to be constructed. For this purpose, a higher level of realism was requested. The experience of achieving it confirmed the results of the previous research indicating the strong link between realism and cost. It also contributed new insights into the varying expectations of different professionals concerning the role of such a visualisation. The requirement of the architect for demonstrating all aspects of the design required a high level of realism than that required for planning and marketing purposes and was considerably more expensive. The low cost of use for planning purposes should be stressed but surprisingly, the lower level of realism implied may be easier for the lay person than the professional to accept.
series	DDSS
last changed	2003/08/07 16:36

_id	3d4a
authors	Kasprisin, Ronald J.
year	1995
title	Visual Thinking For Architects And Designers: Visualizing Context In Design
source	Van Nostrand Reinhold
summary	Here at last is a book that will help architects and designers avoid the pitfall of creating buildings that battle aesthetically with everything within a three-block radius. In Visual Thinking for Architects and Designers, Ron Kasprisin and James Pettinari unveil a solution to designing for the complex urban landscape: visual thinking. A concept twenty-five years in the making, this integrative approach will help harried professionals prevent environmental disasters. The authors present three-dimensional drawing (visual thinking) as a communication and decision-making tool to be used during the design and planning process. Because architects, landscape architects, and urban designers often work independently, on different scales, and at different interludes, no one can truly envision the completed project. Visual thinking is a way of getting input from every member of the team. Here, you'll learn how to use graphics, whether hand-drawn or computer-generated, as a language to express complex systems, interrelationships, and environments. Using over 300 high quality drawings that are connected at many different scales; from aerial perspectives of entire regions to individual rooms and buildings-this groundbreaking book lays out an urban design process and methodology in a sequential and easily understood manner. The book is illustrated by the authors; own work, which has been recognized in national design competitions, and by the AIA, APA, and NEA. The authors masterfully cover the use of drawing to analyze and create spaces, drawing technique, and communicating complex information to the public. Case studies convincingly illustrate the authors; approach.
series	other
last changed	2003/04/23 15:14

_id	ab3c
authors	Kramer, G.
year	1996
title	Mapping a Single Data Stream to Multiple Auditory Variables: A Subjective Approach to Creating a Compelling Design
source	Proceedings of the Third International Conferenceon Auditory Display, Santa FO Institute
summary	Representing a single data variable changing in time via sonification, or using that data to control a sound in some way appears to be a simple problem but actually involves a significant degree of subjectivity. This paper is a response to my own focus on specific sonification tasks (Kramer 1990, 1993) (Fitch & Kramer, 1994), on broad theoretical concerns in auditory display (Kramer 1994a, 1994b, 1995), and on the representation of high-dimensional data sets (Kramer 1991a & Kramer & Ellison, 1991b). The design focus of this paper is partly a response to the others who, like myself, have primarily employed single fundamental acoustic variables such as pitch or loudness to represent single data streams. These simple representations have framed three challenges: Behavioral and Cognitive Science-Can sonifications created with complex sounds changing simultaneously in several dimensions facilitate the formation of a stronger internal auditory image, or audiation, than would be produced by simpler sonifications? Human Factors and Applications-Would such a stronger internal image of the data prove to be more useful from the standpoint of conveying information? Technology and Design-How might these richer displays be constructed? This final question serves as a starting point for this paper. After years of cautious sonification research I wanted to explore the creation of more interesting and compelling representations.
series	other
last changed	2003/04/23 15:50

_id	02f7
authors	Liebich, Thomas and Kim, Inhan
year	1995
title	ID'EST: An Integrated Modelling Framework for Management of Architectural Data
source	Sixth International Conference on Computer-Aided Architectural Design Futures [ISBN 9971-62-423-0] Singapore, 24-26 September 1995, pp. 377-387
summary	An Integrated Design Environment, IDE, facilitates cooperation between different disciplines. The paper investigates the data modelling framework, distinguishes between homogeneous and heterogeneous model worlds, discusses the formal mapping mechanisms available to establish a heterogeneous model world, and introduces a way to incorporate CAD systems into IDE A prototype IDE has been developed to prove these methods. The ID'EST prototype comprises its own core data model, different schemas to cope with several design views, and interfaces to incorporate external CAD systems. A prototype architectural data model has been defined, that includes core data models and aspect models for enclosure system and spatial system. Conventional CAD systems can be integrated into ID'EST, if they are able to map data from the aspect models into their own data structure, and vice versa, on a high semantic level. The inherent methods of classifying data in CAD, layers, macros and attached attributes, have been used to retrieve product data from CAD data files. The usability of conventional CAD systems as data instantiation tools for IDE has been proved and a path has been shown, by which existing tools can be integrated into new technology solutions.
keywords	Product Modelling, Formal Mapping Specification, Computer-Aided Design
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	2768
authors	Maciel, P.W.C. and Shirley, P.
year	1995
title	Visual navigation of large environments using textured clusters
source	Proceedings 1995 Symposium on Interactive 3D Graphics, pp. 95-102, June 1995
summary	A visual navigation system is described which uses texture mapped primitives to represent clusters of objects to maintain high and approximately constant frame rates. In cases where there are more unoccluded primitives inside the view- ing frustum than can be drawn in real-time on the workstation, this system ensures that each visible object, or a cluster that includes it, is drawn in each frame. The system supports the we of traditional "level-of-detail" representations for individual objects, and supports the automatic genera- tion of a certain type of level-of-detail for objects and clusters of objects. The concept of choosing a representation from among those associated with an object that accounts for the direction from which the object is viewed is also supported. The level-of-detail concept is extended to the whole model and the entire scene is stored as a hierarchy of levels-of-detail that is traversed top-down to iind a good representation for a given viewpoint. This system does not assume that visibility information can be extracted from the model and is thus especially suited for outdoor environments.
series	other
last changed	2003/04/23 15:50

_id	ohno02_paper_eaea2007
id	ohno02_paper_eaea2007
authors	Ohno, Ryuzo; Jaeho Ryu
year	2008
title	Development of a Portable Virtual-Reality System for Disaster Education
source	Proceedings of the 8th European Architectural Endoscopy Association Conference
summary	Given that the probability of a catastrophic earthquake occurring is quite high in Japan compared to other countries; major cities like Tokyo operate many disaster-education facilities for informing citizens about earthquake preparedness. Since an earthquake occurs suddenly with almost no time to react, daily preparation plays a greater role in reducing damage than for other types of disasters. In fact, statistics from the Kobe earthquake in 1995 show the largest cause of injury to have been falling furniture, something that could have been prevented with proper precautionary measures.
keywords	virtual reality, disaster, earthquake, education
series	EAEA
email
more	http://info.tuwien.ac.at/eaea
last changed	2008/04/29 20:46

_id	6fc9
authors	Ponomareva, E., Litvinova A., and Kozakova, R.
year	1995
title	Multimedia and Special Architectural Disciplines
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. 169-176
doi	https://doi.org/10.52842/conf.ecaade.1995.169
summary	A person is a wonderful creature. His high organization helps him not only to see and to hear the world around him, but to feel and understand, to condole and pity. A person is a sacramental creature too. His complex organization helps him to see day as light and darkness, as delivery and death, as delight and grief. Every human reaction has biological, physiological and sensitive components. That is why environment is able to call up physical an emotional associations. A human being can "see" sound and "hear" colours. All history of human culture shows that the art can affect man in different ways: unconscious effects, spontaneous associations, general symbolic or specific conventional meanings. That is why architecture can not only protect (a safeguarded aspect), but give knowledge ( an informational aspect) and set up mood (an emotional aspect). And that is why we speak about ambiguity of sense and about multiartistic works. Such as Skriabin's symphony 'Prometheus'. Two scores - musical and colouristic - are connected in this masterpiece. Let us look through two architectural disciplines—from this point of view. The programmes of these disciplines are examples of such embedment. Any architectural discipline demands computer graphics. Any architectural discipline demands multimedia aided teaching, because multimedia in computer designing is a result of human being's complexity and ambivalence.
series	eCAADe
more	http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_22.htm
last changed	2022/06/07 08:00

_id	5af8
authors	Rosenfeld, Y.
year	1995
title	Automation of existing cranes: from concept to prototype
source	Automation in Construction 4 (2) (1995) pp. 125-138
summary	This paper describes the conversion of an existing full-scale 5-ton payload crane into a semi-automatic "Handling Robot". By its size, degrees of freedom, and mode of operation this crane resembles typical construction cranes, which can be enhanced in the same manner. The new control system allows operation of the crane in either a manual or a semi-automatic mode, and it can be taught to memorize up to 50 different benchmarks, i.e. particular points at the construction site, as well as safe routes among them. The major components of the system include: a programmable controller, three speed regulators, three encoders, several limit switches, a wireless remote control set, and a user-friendly MMI (Man-Machine-Interface). Most of the components can be installed externally in the vicinity of the crane's joints and inside the cabin, with minimal intervention in the original wiring. Following the physical retrofitting of the crane, a series of tests examined performance, accuracy, repeatability, and safety aspects. They demonstrated a 15-50% shortening of typical work cycles, high accuracy and repeatability, and a generally safer operation due to pre-tested paths and smoother movements with less sway and swing of the load.
keywords	Construction Automation; Construction Cranes; Robotics; Machine Control
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 14:35

_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	4688
authors	Woodbury, Robert and Chang, Teng-Wen
year	1995
title	Building Enclosures using SEED-Config
source	Sixth International Conference on Computer-Aided Architectural Design Futures [ISBN 9971-62-423-0] Singapore, 24-26 September 1995, pp. 49-54
summary	We describe enclosure design for SEED-Config using an example from "Architectural Details for Insulated Buildings" (Brand 90). We develop enclosures for insulated buildings in terms of the functional units that specify them, the technologies that implement them and the design units that describe them. Brand gives details in eight series (A-H); in each series he describes a specific detailing system. We base our exposition on series A to E: these share the property of the wall fitting partially under the roof and floor slabs. In series F and G the wall stands clear of the slabs and this would require a different approach to detailing from a very high level. Series H is a compendium of special cases that we do not discuss here at all. We conclude with a discussion of what our enclosure design example implies for the representation and computational engine of SEED-Config. We chose insulated enclosures as our example for a specific reason: Brandís treatment of them is proximate to the fundamental approach we take in SEED. Brand wrote in clear, rule-like terms that progress from the abstract to the specific. He explicitly links each part of every detail to the function it fulfills.
keywords	Generative Systems, Building Enclosures, CAD, SEED, Representation, Search
series	CAAD Futures
email
last changed	2003/05/16 20:58

_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

_id	0bbb
authors	Alshawi, Mustafa
year	1995
title	Dynamic Generation of Design Plans at the Brief Stage
source	Sixth International Conference on Computer-Aided Architectural Design Futures [ISBN 9971-62-423-0] Singapore, 24-26 September 1995, pp. 219-228
summary	The traditional approach to design and construction suffers from many limitations. As the technology becomes more available to the average users, the need for an effective and efficient solution has never been greater. This paper introduces an alternative approach to the life cycle of construction projects "application controlled process". Based on this approach, a framework for an Integrated Construction Environment (ICE) has been developed and implemented in a prototype demonstrator "SPACE" (Simultaneous Prototyping for An integrated Construction Environment). This paper is only concerns with those parts of the ICE which are relevant to the dynamic generation of design drawings. The NIRMANI system aims at generating a schematic design by retrieving previous design solutions that match the problem specification from a multimedia case library. While the Bay Design Systems aims at re-adjusting the produced design solution to minimise construction problems.
keywords	Integrated Environments, Case-Based Design, Project Life Cycle, Integrated Construction Environment
series	CAAD Futures
email
last changed	2003/11/21 15:15

_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
source	Education for Practice [14th eCAADe Conference Proceedings / ISBN 0-9523687-2-2] Lund (Sweden) 12-14 September 1996, pp. 65-78
doi	https://doi.org/10.52842/conf.ecaade.1996.065
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

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