Cumincad : CUMINCAD Papers : Search Results

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

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_id	ga0132
id	ga0132
authors	Abe, Yoshiyuki
year	2001
title	Beyond the math visualization - Geometrica and Stochastica
source	International Conference on Generative Art
summary	Mathematically controlled imaging process provides attractive results because of its infinite scaling capabilities with some other elements that contribute to the visualization. Its global/local and precise manipulation of parameters holds potential for realizing an unpredictable horizon of imagery. When it meets the artist's taste, this method could be a strong enough system of creation, and I have been producing images using the surfaces of hyperbolic paraboloid. On the other hand, a method absolutely free from the geometric parameter manipulation is possible with a stochastic process [1]. Like the technique of pendulum in photography, while its production rate of acceptable result is very low, its potential of generating a strong visual message is also very attractive. It is possible to set stochastic elements at any stage of the process, and conditional probability on those elements, or the hierarchy of probability management characterizes the probability distribution. Math space has no light. No gravity. No color on the math surfaces. And the math equation providesonly the boundary in 3D or higher mathematical dimensions. The fact means that artists can keep artistic reality with their unique tastes in colors on the surface and light sources, and this is the most important element of the math based imaging. Being able to give artists' own choice of colors and that the artist may take only right ones from the results of a stochastic process guarantee the motif and aesthetics of artist could be reflected onto the work.
series	other
email
more	http://www.generativeart.com/
last changed	2003/11/21 15:15

_id	a808
authors	Cheng, M.-Y. Liang, Y., Wey, C,-M. and Chen, J.-C.
year	2001
title	Technological enhancement and creation of a computer-aided construction system for the shotcreting robot
source	Automation in Construction 10 (4) (2001) pp. 517-526
summary	This paper addresses the technological enhancement of the shotcreting robot. The shotcreting robot has an arm with six degrees of freedoms, which is remotely controlled by an operator. Due to current utilization drawbacks, an improvement plan has been developed in two stages. First, the control system of the semi-automated robot was improved by reducing the number of joysticks from six to two, incorporating a real-time computer simulation model enhanced to identify model feasibility. Second, the robot was enhanced from semi-automated to fully automated. Thus, an automated profile measuring instrument is used to measure the excavated surface and a simulation model calculates the nozzle path for shotcreting. The automated shotcreting robot was completed by integrated the graphical model with the robot control system.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	0761
authors	Cheng, Min-Yuan and Chang, Guey-Lin
year	2001
title	Automating utility route design and planning through GIS
source	Automation in Construction 10 (4) (2001) pp. 507-516
summary	In trench construction, one of the tasks for engineers is to select a suitable route to minimize construction cost and obstructions. This paper discusses the development of a Geographic Information Systems (GIS)-based system to automate the process of routing and design of an underground power supply system. In the system, surface and underground utilities are represented in several coverages. Using network analysis, the system determines the optimal paths for routing the utilities. Through database queries and spatial operations, the construction conflict points between the basic coverages and the selected route are not only identified, but a reallocation schedule is also determined.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	ga0109
id	ga0109
authors	Lewis, Chak Chan
year	2001
title	Defects Defined by Form Making Method for Improving Generative Design System
source	International Conference on Generative Art
summary	Evolutionary-based Generative Design System (GDS) is generally designed for industrial designers during the early stage of conceptual design. Although “additive” Rapid Prototyping (RP) methods are commonly applied for the physical realization, grown Surfaces Object (SO) created from these GDS still has room to be considered to a combined workable volume,especially for the more complex design. The inarticulate processes from GDS to Generative Production System (GPS) are linking up with different aspects and contexts as well as the conventional Computer-Aided Design (CAD)/RP integration, which has been conducted for along time. There are design constraints existing between 3D SO in industry design representation and feasible 3D production solution. Perception to object designing with knowledge is limited at SO forming by incomplete interpretations. Meanwhile, it is difficult to discern the problemsof incomplete object generation as hidden illegal design occurred from time to time because of the design constraints, despite the completion of the design representation. It has led to some of the invalidity of surface feature at the end. The reconstruction of the RP process ofthe SO pre-processing procedure can help to clarify these defects with thickness requirement in generative production. The aim of this paper is to verify an effective generative design strategy as a possibility ofimplementing method(s) or tool. They will be built within a surface-oriented GDS by mapping a valid object directly accepted by any RP system without any influence on generative object creating. Through the involvement of Form Making processes of RP from selected instants with their solid phenomena, evidences are used for defending this viewpoint.Throughout the process, generative design method and CAD method have been utilized for the creation of virtual form. The 3D printer and Fused Deposition Modeling (FDM) technology with “trial and error” method were employed in the RP processes.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	cf2011_p115
id	cf2011_p115
authors	Pohl, Ingrid; Hirschberg Urs
year	2011
title	Sensitive Voxel - A reactive tangible surface
source	Computer Aided Architectural Design Futures 2011 [Proceedings of the 14th International Conference on Computer Aided Architectural Design Futures / ISBN 9782874561429] Liege (Belgium) 4-8 July 2011, pp. 525-538.
summary	Haptic and tactile sensations, the active or passive exploration of our built surroundings through our sense of touch, give us a direct feeling and detailed information of space, a sense of architecture (Pallasmaa 2005). This paper presents the prototype of a reactive surface system, which focuses its output on the sense of touch. It explains how touch sensations influence the perception of architecture and discusses potential applications that might arise from such systems in the future. A growing number of projects demonstrate the strong impact of interaction design on the human senses and perception. They offer new ways of sensing and experiencing architectural space. But the majority of these interaction concepts focus on visual and auditory output-effects. The sense of touch is typically used as an input generator, but neglected as as a potential receiver of stimuli. With all the possibilities of sensors and micro-devices available nowadays, there is no longer a technical reason for this. It is possible to explore a much wider range of sense responding projects, to broaden the horizon of sensitive interaction concepts (Bullivant 2006). What if the surfaces of our surroundings can actively change the way it feels to touch them? What if things like walls and furniture get the ability to interactively respond to our touch? What new dimensions of communication and esthetic experience will open up when we conceive of tangibility in this bi-directional way? This paper presents a prototype system aimed at exploring these very questions. The prototype consists of a grid of tangible embedded cells, each one combining three kinds of actuators to produce divergent touch stimuli. All cells can be individually controlled from an interactive computer program. By providing a layering of different combinations and impulse intensities, the grid structure enables altering patterns of actuation. Thus it can be employed to explore a sort of individual touch aesthetic, for which - in order to differentiate it from established types of aesthetic experiences - we have created the term 'Euhaptics' (from the Greek ŒµœÖ = good and Œ¨œÄœÑœâ = touch, finger). The possibility to mix a wide range of actuators leads to blending options of touch stimuli. The sense of touch has an expanded perception- spectrum, which can be exploited by this technically embedded superposition. The juxtaposed arrangement of identical multilayered cell-units offers blending and pattern effects of different touch-stimuli. It reveals an augmented form of interaction with surfaces and interactive material structures. The combination of impulses does not need to be fixed a priori; it can be adjusted during the process of use. Thus the sensation of touch can be made personally unique in its qualities. The application on architectural shapes and surfaces allows the user to feel the sensations in a holistic manner ‚Äì potentially on the entire body. Hence the various dimensions of touch phenomena on the skin can be explored through empirical investigations by the prototype construction. The prototype system presented in the paper is limited in size and resolution, but its functionality suggests various directions of further development. In architectural applications, this new form of overlay may lead to create augmented environments that let inhabitants experience multimodal touch sensations. By interactively controlling the sensual patterns, such environments could get a unique ‚Äútouch‚Äù for every person that inhabit them. But there may be further applications that go beyond the interactive configuration of comfort, possibly opening up new forms of communication for handicapped people or applications in medical and therapeutic fields (Grunwald 2001). The well-known influence of touch- sensations on human psychological processes and moreover their bodily implications suggest that there is a wide scope of beneficial utilisations yet to be investigated.
keywords	Sensitive Voxel- A reactive tangible surface
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	34d2
authors	Rottensteiner, Franz
year	2001
title	Semi-automatic extraction of buildings based on hybrid adjustment using 3D surface models and management of building data in a TIS
source	Vienna University of Technology
summary	A new method for semi-automatic building extraction together with a concept for storing building models alongside with terrain data in a topographical information system (TIS) is presented. A user interface based on Constructive Solid Geometry is combined with an internal data structure completely based on boundary representation. Each building can be de-composed into a set of simple primitives which are reconstructed individually. After selecting a primitive from a data base of common building shapes, the primitive parameters can be modified by interactive measurement in digital images in order to provide approximate values for automatic fine measurement. In all phases, the properties of the boundary models are directly connected to parameter estimation: the parameters of the building primitives are determined in a hybrid adjustment of camera co-ordinates and fictitious observations of points being situated on building faces. Automatic fine measurement is an application of a general framework for object surface reconstruction using hierarchical feature based object space matching. The integration of object space into the matching process is achieved by the new modeling technique. The management of both building and terrain data in a TIS is based on a unique principle. Meta data are managed in a relational data base, whereas the actual data are treated as binary large objects. The new method is evaluated in a test project (image scale: 1:4500, 70 % overlap, 50 % side lap). The automatic tool gives results with an accuracy of +-2-5 cm in planimetric position and +-5-10 cm in height.
keywords	Building Extraction; Semi-automatic building extraction; Object modelling; 3D City models; Data acquisition; Spatial Information Systems; Image matching; Photogrammetry
series	thesis:PhD
email
more	http://www.ipf.tuwien.ac.at/fr/buildings/diss/node5.html
last changed	2003/02/12 22:37

_id	ga0128
id	ga0128
authors	Singh, S.K., Vatsa, M.and Singh, R.
year	2001
title	Face Recognizing Robot
source	International Conference on Generative Art
summary	In the biological evolution process, logical thinking has been the last to evolve, and lies at the surface of our consciousness, its means and methodologies available for introspection. On the other hand, the intelligence required to interpret sensory signals and activate motor commands is so well known biologically that it is buried in the subconscious and is entirely inaccessible at the conscious level. The variation in human intelligence is usually measured by the ability to process logical information, whereas the other forms of intelligence needed in daily life are not normallyassociated with the word intelligence. In the recent years man wants to develop a machine having its own intelligence. He wants to make machine, to which he can treat as a real servant. In this paper a simulated robotic system is described, which can be used as a criminal-detecting robot. In this project, an attempt will be made to design a Robot and it’s software, which will have an optimal solution of conditions (for which the Robot is to be designed i.e. security). It will not only reduce the cost (the cost spend insecurity of VIP’s is very high) but also will increase the security strength and stop the criminal activities. It will take snaps of the people and match from its database to check for criminals. Thus, such operations with minimum errors will cause the better security. Computer vision concerned with the sensing of vision data and its interpretation by a computer. Detecting faces in images with complex backgrounds is a difficult task. The approach presented in this paper, which obtains state of the art results, is based on a new neural network model. To detect a face in an image means to find its position in the image plane (x, y) and its size or scale (z). An image of a face can be considered as a set of features such as eyes, mouth, and nose with constrained positions and size within an oval: an explicit model can be used. The think and adjust himself in any condition, can take the optimal and possible decision. The Robot can perform only those tasks and take decisions, which are specified in its programming code.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	3e6a
authors	Wittkopf, Stephen
year	2001
title	I-Light, a webbased learning system for architectural lighting design
source	TU Darmstadt
summary	With the rising meaning of architectural lighting also the requirement at appropriate light planning rises. The possibilities of digital instruments were realized by several lamp manufacturers, which use 3D-CAD to present visualizations and use the Internet for their distribution. However in the field of universities it is important to offer instruments and methods with which the interaction of light and architecture can be learned descriptive, comprehensibly and interactively. Introductory in a theoretical section the bases of light planning and learn-educational concepts are pointed out. Parallel the state of the art in the areas of computer-aided learning and the light simulation is presented and evaluated regarding the learn-educational suitability. Thereupon an action requirement is formulated, which designates a new integration of the individual areas. It flows into the development of an interactive Web-based training system for the design with light - I-Light - whose concept and implementation in the following sections is described. In an application of examples the author points out finally, how this innovative connection of the Internet, 3D-CAD and simulation supports a better understanding of the medium light in the architecture perception. A new virtual light laboratory forms the core of this training system, in which architectural planning examples can be represented three-dimensional and changed interactively. A developed semantic scene model ensures for the fact that lighting, materials and delimitation surfaces are varied didactically appropriately and compared, so that visual effects and important interrelation can be assumed and checked. The author orients itself at the methodology by simulation and merges 3D-CAD and light simulation programs into the training system. The calculated photo-realistic picture is regarded not - as otherwise usual - as presentation material, but as interactive tools. Since 3D-CAD and light simulation programs presuppose much application knowledge, the author does not pursue to confront the user with these complex programs. He developed a new system with a Web-based graphic surface, that enables 3D-scenes to be loaded, be changed and stored easily (front-end). Furthermore it enables the remote control to an automatic, photo-realistic simulation on push of a button on an external high end render machine, that is connected via Internet, where at least all files are externally stored. For the operation of the front-end is only an average PC with a standard Webbrowser necessary. For the receiving station the author develops a new interface, which extends a standard Web server by the new possibility of storing and executing lighting simulations (back-end). The system presented by the author differs in the didactical concept and in the technical implementation from the solutions existing so far in similar areas. The interactive virtual light laboratories of the architectural planning examples represent a new beginning of Web-based learning environments. To the selected tools (HTML, Java, VRML, Web server, Lightscape) there yet exist no matured alternatives.
series	thesis:PhD
email
more	http://elib.tu-darmstadt.de/diss/000131/
last changed	2003/02/12 22:37

_id	9ab2
authors	Yun, Yong Gib
year	2001
title	Structural Composite Members in Architecture Fabricated by CAD/CAE/CAM Technology
source	Harvard University
summary	The doctoral research in this dissertation is aimed at exploring new materials and innovative methods for fabricating complex-shaped buildings, which have surfaced as a prevailing trend in architecture today. Over the past few years, the field of architecture has witnessed revolutionary changes in design. The recent completion of Frank O. Gehry's new Guggenheim Museum in Bilbao, Spain, brought unprecedented attention to complex-shaped, non-conventional designs and its influence on the global architectural trend has been immense. In following these latest trends, the author was drawn to the issues concerning construction materials and methods that are being currently adopted in realizing these complicated designs. It is perhaps inevitable that the traditional steel construction methods, suitable for use in the conventional linear shapes, face tremendous challenges and limitations in building such complex-shaped designs. In the author's opinion, the next step to go from here is to seek joint efforts between the architectural field and the engineering field to search for a new methodology which will best serve the contemporary design style. This research first focused on examining the problems that traditional methods pose for the new complex-shaped buildings. Paying attention to Gehry's recent projects, the author was able to identify major difficulties in association with representing and constructing these complicated shapes, mainly in terms of the relationship between the primary structure and the envelope surface. The second part of the research moved on to proposing a new alternative to the traditional methods, by utilizing polymer composite materials (PCM) as construction material and employing advanced Computer-Aided Design (CAD)/Computer Aided Engineering (CAE)/Computer-Aided Manufacturing (CAM) technologies. More specifically, the author has attempted to present effective theories in support of the two following ideas: (1) circular tubes made of PCM are the most promising alternative to regular steel members, especially steel tubes, to follow the envelope surface of the complex shaped building. (2) state-of-the-art CAD/CAE/CAM technologies are the most essential tools to achieve the geometrical and functional quality of the proposed new material. In the second phase, the primary focus of the quantitative approach was on fabricating an experimental model (1:1 scale prototype) called “ a unit of boundary structures”, the basic unit of structure system that wraps a complex-shaped building's entire territory . (Abstract shortened by UMI.)
series	thesis:PhD
last changed	2003/02/12 22:37

_id	7897
authors	Achten, Henri and De Vries, Bauke
year	2001
title	Multiple Sketch Users in DDDoolz
source	Stellingwerff, Martijn and Verbeke, Johan (Eds.), ACCOLADE - Architecture, Collaboration, Design. Delft University Press (DUP Science) / ISBN 90-407-2216-1 / The Netherlands, pp. 153-162 [Book ordering info: m.c.stellingwerff@bk.tudelft.nl]
summary	This paper presents DDDoolz, a desktop-VR three-dimensional voxel sketchtool. DDDoolz is developed in the Design Systems Group to explore the use of Virtual Reality technology in the early design stage. The aim is to offer a sketch-like environment in VR with an unobtrusive interface. The paper presents DDDoolz, how it is used in education and with partners in architectural practice, and some future developments. As an extension to current functionality, the possibility of multiple users at the same time will be developed in the system for the {ACCOLADE} workshop.
series	other
email
last changed	2001/09/14 21:30

_id	db60
authors	Af Klercker, J., Achten, H. and Verbeke, J.
year	2001
title	AVOCAAD - A First Step Towards Distance Learning?
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 269-274
doi	https://doi.org/10.52842/conf.ecaade.2001.269
summary	In the industrial world knowledge is developed very fast. As most countries are depending on employees with a high level of knowledge and skills the term ”Life Long Learning” has been formulated and the concept is more and more accepted. Institutions of higher education are more and more involved in creating supplementary education more independent of time and place. Distance learning was originally carried out by ordinary mail, which was slow but might then have been the only solution for people in remote places. With the Internet and e-mail the distance-learning concept has got a far better tool, for instance better interaction facilities. Architects and engineers in practise are deeply involved in solving the problems of the present projects. Education which is independent of time and place must be of great interest to both parties. The AVOCAAD project has created an education model for students to meet the possibilities of CAAD. The education model can be used in a curriculum at a school as well as for distance learning. Among the possible experiences from it, the one concerning distance learning might be the most important future application of the system in architectural education. This paper sketches the pedagogical background and gives examples from other areas of knowledge, where distance learning is already in use. We will put the question how the AVOCAAD concept meets the experiences from distance learning.
keywords	Distance Learning, Pedagogic, CAAD, E-Learning, AVOCAAD
series	eCAADe
email
last changed	2022/06/07 07:54

_id	bb5f
authors	Ahmad Rafi, M.E. and Mohd Fazidin, J.
year	2001
title	Creating a City Administration System (CAS) using Virtual Reality in an Immersive Collaborative Environment (ICE)
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 449-453
doi	https://doi.org/10.52842/conf.ecaade.2001.449
summary	Current problems in administration of a city are found to be decentralized and noninteractive for an effective city management. This usually will result in inconsistencies of decision-making, inefficient services and slow response to a particular action. City administration often spends more money, time and human resource because of these problems. This research demonstrates our research and development of creating a City Administration System (CAS) to solve the problems stated above. The task of the system is to use information, multimedia and graphical technologies to form a database in which the city administrators can monitor, understand and manage an entire city from a central location. The key technology behind the success of the overall system uses virtual reality and immersive collaborative environment (ICE). This system employs emerging computer based real-time interactive technologies that are expected to ensure effective decisionmaking process, improved communication, and collaboration, error reduction, (Rafi and Karboulonis, 2000) between multi disciplinary users and approaches. This multi perspective approach allows planners, engineers, urban designers, architects, local authorities, environmentalists and general public to search, understand, process and anticipate the impact of a particular situation in the new city. It is hoped that the CAS will benefit city administrators to give them a tool that gives them the ability to understand, plan, and manage the business of running the city.
keywords	City Administration System (CAS), Virtual Reality, Immersive Collaborative Environment (ICE), Database
series	eCAADe
email
last changed	2022/06/07 07:54

_id	4b30
authors	Ahmad Rafi, M.E. and Mohd Fazidin, J.
year	2001
title	ARMY WAR GAME SIMULATION (AWAS) system - Utilising architectural knowledge in virtual environments
source	CAADRIA 2001 [Proceedings of the Sixth Conference on Computer Aided Architectural Design Research in Asia / ISBN 1-86487-096-6] Sydney 19-21 April 2001, pp. 435-438
doi	https://doi.org/10.52842/conf.caadria.2001.435
summary	This research briefly examines the importance of collaborative design in developing a multi-user, multi-tiered, networked and real-time information base system. Aspects such as navigation, interaction, communication, movements (objects or virtual camera), control, level of details, spatial design and virtual spaces will be explained to show their importance in the development of virtual world. This paper will further explore the aspects of collaborative design in the context of Army War Game Simulation System (AWAS). A generic collaborative design-based framework will be demonstrated to simulate the overall operations of a war in command-control structure of the force.
series	CAADRIA
email
last changed	2022/06/07 07:54

_id	12e3
authors	Ahmad Rafi, M.E., Che Zulkhairi, A. and Karboulonis, P.
year	2002
title	Interactive Storytelling and Its Role in the Design Process
source	CAADRIA 2002 [Proceedings of the 7th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 983-2473-42-X] Cyberjaya (Malaysia) 18–20 April 2002, pp. 151-158
doi	https://doi.org/10.52842/conf.caadria.2002.151
summary	Projects of ever increasing complexity and size have incited the need for new and robust design methodologies and tools in an effort to manage complexity, lower costs, ascertain quality and reduce risk. Technology convergence through the growing availability of networked computers, rapid progress in Computer Aided Design (CAD) and information management have encouraged the undertaking of even more complex designs that demand high degrees of interaction, collaboration and the efficient sharing and dissemination of information. It is suggested that interactive storytelling and interactive design (Rafi and Karboulonis, 2001) techniques that use non-linear information mapping systems can be deployed to assist users as they navigate information that is structured to address localized needs as they arise. The design process is a collaborative effort that encompasses diverse knowledge disciplines and demands the management and utilization of available resources to satisfy the needs of a single or set of goals. It is thought that building industry specialists should work close together in an organised manner to solve design problems as they emerge and find alternatives when designs fall short. The design process involves the processing of dynamic and complex information, that can be anything from the amount of soil required to level lands - to the needs of specific lightings systems in operation theatres. Other important factors that affect the design process are related to costs and deadlines. This paper will demonstrate some of our early findings in several experiments to establish nonlinear storytelling. It will conclude with a recommendation for a plausible design of such a system based on experimental work that is currently being conducted and is reaching its final stages. The paper will lay the foundations of a possible path to implementation based on the concept of multi-path animation that is appropriate for structuring the design process as used in the building industry.
series	CAADRIA
email
last changed	2022/06/07 07:54

_id	c39a
authors	Ahumada Gallardo, N., López Morales, B., Mora Olate, M.L. and Muñoz, V.C.
year	2001
title	MARCO ANTONIO DE LA PARRA COMO NARRADOR Y ENSAYISTA. MONOGRAFIA MULTIMEDIAL (Marco Antonio de la Parra as Narrator and Writer. Monography in Multimedia)
source	SIGraDi biobio2001 - [Proceedings of the 5th Iberoamerican Congress of Digital Graphics / ISBN 956-7813-12-4] Concepcion (Chile) 21-23 november 2001, pp. 268-270
summary	The analysis of Marco Antonio de la Parra’s novels and essays from the discourse perspective, is the contents of an interdisciplinary work for modernizing and improving communicative possibilities of universitary thesis through multimedia. For the multimedia design, the main and most recent digital creating software for the graphic treatment of texts and images were analised, then the navigation system and screens were designed, difining backgrounds, texts, audio and video, besides buttons and hits. Results permit: 1. To present the contents in an easy access and transportation support, reducing production costs. 2. The offering of three communication supports: written text, audio and video. 3. Ostensibly improves universitary thesis and seminars quality.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	af65
authors	Akleman, E., Chen, J. and Sirinivasan, V.
year	2001
title	An Interactive Shape Modeling System for Robust Design of Functional 3D Shapes
source	Reinventing the Discourse - How Digital Tools Help Bridge and Transform Research, Education and Practice in Architecture [Proceedings of the Twenty First Annual Conference of the Association for Computer-Aided Design in Architecture / ISBN 1-880250-10-1] Buffalo (New York) 11-14 October 2001, pp. 248-257
doi	https://doi.org/10.52842/conf.acadia.2001.248
summary	In Architecture, it is essential to design functional and topologically complicated 3D shapes (i.e. shapes with many holes, columns and handles). In this paper, we present a robust and interactive system for the design of functional and topologically complicated 3D shapes. Users of our system can easily change topology (i.e. they can create and delete holes and handles, connect and disconnect surfaces). Our system also provide smoothing operations (subdivision schemes) to create smooth surfaces. Moreover, the system provides automatic texture mapping during topology and smoothing operations. We also present new design approaches with the new modeling system. The new design approaches include blending surfaces, construction of crusts and opening holes on these crusts.
keywords	Modeling, Shape Design, Sculpting, Computer Aided Geometric Design
series	ACADIA
email
last changed	2022/06/07 07:54

_id	avocaad_2001_18
id	avocaad_2001_18
authors	Aleksander Asanowicz
year	2001
title	The End of Methodology - Towards New Integration
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	The present paper is devoted to the deliberation on the genesis and development of designing from the point of view of the potential use of computers in the process. Moreover, it also presents the great hopes which were connected with the use of the systematic designing methods in the 1960’s, as well as the great disappointment resulting from the lack of concrete results. At this time a great deal of attention was paid to the process of design as a branch of a wider process of problem-solving. Many people believed that the intuitive methods of design traditionally used by architects were incapable of dealing with the complexity of the problems to be solved. Therefore, the basic problem was the definition of a vertical structure of the designing process, which would make it possible to optimise each process of architectural design. The studies of design methodology directed at the codification of the norms of actions have not brought about any solutions which could be commonly accepted, as the efforts to present the designing process as a formally logical one and one that is not internally “uncontrary” from the mathematical point of view, were doomed to fail. Moreover, the difficulties connected with the use of the computer in designing were caused by the lack of a graphic interface, which is so very characteristic of an architect’s workshop. In result, the methodology ceased to be the main area of the architect’s interest and efforts were focused on facilitating the method of the designer’s communication with the computer. New tools were created, which enabled both the automatic generation of diversity and the creation of forms on the basis of genetic algorithms, as well as the presentation of the obtained results in the form of rendering, animation and VRML. This was the end of the general methodology of designing and the beginning of a number of methods solving the partial problems of computer-supported design. The present situation can be described with the words of Ian Stewart as a “chaotic run in all directions”. An immediate need for new integration is felt. Cyber-real space could be a solution to the problem. C-R-S is not a virtual reality understood as an unreal world. Whilst VR could be indeed treated as a sort of an illusion, C-R-S is a much more realistic being, defining the area in which the creative activities are taking place. The architect gains the possibility of having a direct contact with the form he or she is creating. Direct design enables one to creatively use the computer technology in the designing process. The intelligent system of recognising speech, integrated with the system of virtual reality, will allow to create an environment for the designer – computer communication which will be most natural to the person. The elimination of this obstacle will facilitate the integration of the new methods into one designing environment. The theoretical assumptions of such an environment are described in the present paper.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	avocaad_2001_13
id	avocaad_2001_13
authors	Alexander Koutamanis
year	2001
title	Modeling irregular and complex forms
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	Computational technologies provide arguably the first real opportunity architectural design has had for a comprehensive description of built form. With the advent of affordable computer-aided design systems (including drafting, modeling, visualization and simulation tools), architects believe they can be in full control of geometric aspects and, through these, of a wide spectrum of other aspects that are implicit or explicit in the geometric representation. This belief is based primarily on the efficiency and effectiveness of computer systems, ranging from the richness and adaptability of geometric primitives to the utility of geometric representations in simulations of climatic aspects. Such capabilities support attempts to design and construct more irregular or otherwise complex forms. These fall under two main categories: (1) parsing of irregularity into elementary components, and (2) correlation of the form of a building with complex geometric structures.The first category takes advantage of the compactness and flexibility of computational representations in order to analyse the form of a design into basic elements, usually elementary geometric primitives. These are either arranged into simple, unconstrained configurations or related to each other by relationships that define e.g. parametric relative positioning or Boolean combinations. In both cases the result is a reduction of local complexity and an increase of implicit or explicit relationships, including the possibility of hierarchical structures.The second category attempts to correlate built form with constraints that derive usually from construction but can also be morphological. The correlation determines the applicability of complex geometric structures (minimally ruled surfaces) to the description of a design. The product of this application is generally variable in quality, depending upon the designer's grounding in geometry and his ability to integrate constraints from different aspects in the definition of the design's geometry.Both categories represent a potential leap forward but are also equally hampered by the rigidity of the implementation mechanisms upon which they rely heavily. The paper proposes an approach to making these mechanisms subordinate to the cognitive and technical aspects of architectural thinking through fuzzy modeling. This way of modeling involves a combination of (a) canonical forms, (b) tolerances around canonical forms and positions, (c) minimal and maximal values, (d) fuzzy boundaries, and (e) plastic interaction between elements based on the dual principles of local intelligence and autonomy. Fuzzy models come therefore closer to the intuitive manners of sketching, while facilitating transition to precise and complex forms. The paper presents two applications of fuzzy modeling. The first concerns the generation of schematic building layouts, including adaptive control of programmatic requirements. The second is a system for designing stairs that can adapt themselves to changes in their immediate environment through a fuzzy definition of geometric and topological parametrization.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	avocaad_2001_05
id	avocaad_2001_05
authors	Alexander Koutamanis
year	2001
title	Analysis and the descriptive approach
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	The rise of consciousness concerning the quality of working and living conditions has been a permanent though frequently underplayed theme in architecture and building since the reconstruction period. It has led to an explosive growth of programmatic requirements on building behaviour and performance, thus also stimulating the development of design analysis. The first stage of development was characterized by the evolution of prescriptive systems. These reversed the structure of pre-existing proscriptive systems into sequences of known steps that should be taken in order to achieve adequate results. Prescriptive systems complemented rather than replaced proscriptive ones, thereby creating an uncertain mixture of orthodoxy and orthopraxy that failed to provide design guidance for improving design performance and quality.The second stage in the development of design analysis focuses on descriptive methods and techniques for analyzing and supporting evaluation. Technologies such as simulation and scientific visualization are employed so as to produce detailed, accurate and reliable projections of building behaviour and performance. These projections can be correlated into a comprehensive and coherent description of a building using representations of form as information carriers. In these representations feedback and interaction assume a visual character that fits both design attitudes and lay perception of the built environment, but on the basis of a quantitative background that justifies, verifies and refines design actions. Descriptive analysis is currently the most promising direction for confronting and resolving design complexity. It provides the designer with useful insights into the causes and effects of various design problems but frequently comes short of providing clear design guidance for two main reasons: (1) it adds substantial amounts of information to the already unmanageable loads the designer must handle, and (2) it may provide incoherent cues for the further development of a design. Consequently the descriptive approach to analysis is always in danger of been supplanted by abstract decision making.One way of providing the desired design guidance is to complement the connection of descriptive analyses to representations of form (and from there to synthesis) with two interface components. The first is a memory component, implemented as case-bases of precedent designs. These designs encapsulate integrated design information that can be matched to the design in hand in terms of form, function and performance. Comparison between precedents with a known performance and a new design facilitate identification of design aspects that need be improved, as well as of wider formal and functional consequences. The second component is an adaptive generative system capable of guiding exploration of these aspects, both in the precedents and the new design. The aim of this system is to provide feedback from analysis to synthesis. By exploring the scope of the analysis and the applicability of the conclusions to more designs, the designer generates a coherent and consistent collection of partial solutions that explore a relevant solution space. Development of the first component, the design case-bases, is no trivial task. Transformability in the representation of cases and flexible classification in a database are critical to the identification and treatment of a design aspect. Nevertheless, the state of the art in case-based reasoning and the extensive corpus of analysed designs provide the essential building blocks. The second component, the adaptive generative system, poses more questions. Existing generative techniques do not possess the necessary richness or multidimensionality. Moreover, it is imperative that the designer plays a more active role in the control of the process than merely tweaking local variables. At the same time, the system should prevent that redesigning degenerates into a blind trial-and-error enumeration of possibilities. Guided empirical design research arguably provides the means for the evolutionary development of the second component.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	1f37
authors	Alpha, Lee W.K. and Iki, Kazuhisa
year	2001
title	Moving Architecture and Transiting Landscape. Interactive Rendering System for Animated Assessment
source	Proceedings of the Ninth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-7023-6] Eindhoven, 8-11 July 2001, pp. 739-752
summary	In this paper, an Interactive Rendering System for Animated Assessment (IRSA2) is proposed. Using IRSA2, different to the usual process that the respondents are allowed only to select alternatives designed by planners, they are allowed to participate in the design process and create alternatives as proposals in a web-based collaborative environment. This gives roads to an autonomous process in landscape planning and design. The system efficiency was verified by a case study of its use in a wind farm project in Japan.
keywords	Collaborative Design, Utilization Of Internet, Overall Design Strategy,
series	CAAD Futures
email
last changed	2006/11/07 07:22

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