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

PDF papers
References

Hits 1 to 20 of 508

_id 349e
authors Durmisevic, Sanja
year 2002
title Perception Aspects in Underground Spaces using Intelligent Knowledge Modeling
source Delft University of Technology
summary The intensification, combination and transformation are main strategies for future spatial development of the Netherlands, which are stated in the Fifth Bill regarding Spatial Planning. These strategies indicate that in the future, space should be utilized in a more compact and more efficient way requiring, at the same time, re-evaluation of the existing built environment and finding ways to improve it. In this context, the concept of multiple space usage is accentuated, which would focus on intensive 4-dimensional spatial exploration. The underground space is acknowledged as an important part of multiple space usage. In the document 'Spatial Exploration 2000', the underground space is recognized by policy makers as an important new 'frontier' that could provide significant contribution to future spatial requirements.In a relatively short period, the underground space became an important research area. Although among specialists there is appreciation of what underground space could provide for densely populated urban areas, there are still reserved feelings by the public, which mostly relate to the poor quality of these spaces. Many realized underground projects, namely subways, resulted in poor user satisfaction. Today, there is still a significant knowledge gap related to perception of underground space. There is also a lack of detailed documentation on actual applications of the theories, followed by research results and applied techniques. This is the case in different areas of architectural design, but for underground spaces perhaps most evident due to their infancv role in general architectural practice. In order to create better designs, diverse aspects, which are very often of qualitative nature, should be considered in perspective with the final goal to improve quality and image of underground space. In the architectural design process, one has to establish certain relations among design information in advance, to make design backed by sound rationale. The main difficulty at this point is that such relationships may not be determined due to various reasons. One example may be the vagueness of the architectural design data due to linguistic qualities in them. Another, may be vaguely defined design qualities. In this work, the problem was not only the initial fuzziness of the information but also the desired relevancy determination among all pieces of information given. Presently, to determine the existence of such relevancy is more or less a matter of architectural subjective judgement rather than systematic, non-subjective decision-making based on an existing design. This implies that the invocation of certain tools dealing with fuzzy information is essential for enhanced design decisions. Efficient methods and tools to deal with qualitative, soft data are scarce, especially in the architectural domain. Traditionally well established methods, such as statistical analysis, have been used mainly for data analysis focused on similar types to the present research. These methods mainly fall into a category of pattern recognition. Statistical regression methods are the most common approaches towards this goal. One essential drawback of this method is the inability of dealing efficiently with non-linear data. With statistical analysis, the linear relationships are established by regression analysis where dealing with non-linearity is mostly evaded. Concerning the presence of multi-dimensional data sets, it is evident that the assumption of linear relationships among all pieces of information would be a gross approximation, which one has no basis to assume. A starting point in this research was that there maybe both linearity and non-linearity present in the data and therefore the appropriate methods should be used in order to deal with that non-linearity. Therefore, some other commensurate methods were adopted for knowledge modeling. In that respect, soft computing techniques proved to match the quality of the multi-dimensional data-set subject to analysis, which is deemed to be 'soft'. There is yet another reason why soft-computing techniques were applied, which is related to the automation of knowledge modeling. In this respect, traditional models such as Decision Support Systems and Expert Systems have drawbacks. One important drawback is that the development of these systems is a time-consuming process. The programming part, in which various deliberations are required to form a consistent if-then rule knowledge based system, is also a time-consuming activity. For these reasons, the methods and tools from other disciplines, which also deal with soft data, should be integrated into architectural design. With fuzzy logic, the imprecision of data can be dealt with in a similar way to how humans do it. Artificial neural networks are deemed to some extent to model the human brain, and simulate its functions in the form of parallel information processing. They are considered important components of Artificial Intelligence (Al). With neural networks, it is possible to learn from examples, or more precisely to learn from input-output data samples. The combination of the neural and fuzzy approach proved to be a powerful combination for dealing with qualitative data. The problem of automated knowledge modeling is efficiently solved by employment of machine learning techniques. Here, the expertise of prof. dr. Ozer Ciftcioglu in the field of soft computing was crucial for tool development. By combining knowledge from two different disciplines a unique tool could be developed that would enable intelligent modeling of soft data needed for support of the building design process. In this respect, this research is a starting point in that direction. It is multidisciplinary and on the cutting edge between the field of Architecture and the field of Artificial Intelligence. From the architectural viewpoint, the perception of space is considered through relationship between a human being and a built environment. Techniques from the field of Artificial Intelligence are employed to model that relationship. Such an efficient combination of two disciplines makes it possible to extend our knowledge boundaries in the field of architecture and improve design quality. With additional techniques, meta know/edge, or in other words "knowledge about knowledge", can be created. Such techniques involve sensitivity analysis, which determines the amount of dependency of the output of a model (comfort and public safety) on the information fed into the model (input). Another technique is functional relationship modeling between aspects, which is derivation of dependency of a design parameter as a function of user's perceptions. With this technique, it is possible to determine functional relationships between dependent and independent variables. This thesis is a contribution to better understanding of users' perception of underground space, through the prism of public safety and comfort, which was achieved by means of intelligent knowledge modeling. In this respect, this thesis demonstrated an application of ICT (Information and Communication Technology) as a partner in the building design process by employing advanced modeling techniques. The method explained throughout this work is very generic and is possible to apply to not only different areas of architectural design, but also to other domains that involve qualitative data.
keywords Underground Space; Perception; Soft Computing
series thesis:PhD
email s.durmisevic@wannadoo.nl
last changed 2003/02/12 21:37

_id 077a
authors Boucard, D., Huot, S., Colin, Ch., Hégron, G. and Siret, D.
year 2002
title An Image-based and Knowledge-based System for Efficient Architectural and Urban Modeling
source Thresholds - Design, Research, Education and Practice, in the Space Between the Physical and the Virtual [Proceedings of the 2002 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-11-X] Pomona (California) 24-27 October 2002, pp. 229-238
summary In this paper, we present two user-centered systems aiming at making easier the modeling ofarchitectural and urban scenes by using two different but complementary approaches. The first oneMArINa, an image-based modeler, allows the user to reconstruct urban scenes from one or moregraphical documents. This method focuses more on reconstructing models and is more dedicated tothe production of 3D sketches. The second modeler, MArCo is a knowledge-based modelercontaining the know-from and know-how on classical architecture. It allows the user to modelclassical architectural scenes verifying automatically all the domain rules. Finally, we show howMArINa and MArCo can cooperate providing the user a tool combining efficiently their respectivecapabilities.
series ACADIA
email Didier.Boucard@emn.fr
last changed 2003/11/21 14:16

_id caadria2006_613
id caadria2006_613
authors JAEHO RYU, NAOKI HASHIMOTO, MAKOTO SATO, MASASHI SOEDA, RYUZO OHNO
year 2006
title A GAME ENGINE BASED ARCHITECTURAL SIMULATOR ON MULTI-PROJECTOR DISPLAYS
source CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 613-615
summary To make whole one image on screens that is generated by many computers and synchronization among computers, there is a need for a network software environment for multi-projector display system. Although the development costs increase for parallel programming for multi-projector display system, there is a possibility that the program cannot be executed at an enough speed since the network bandwidth might become a bottleneck. There are some software environments for that kind of multi-projector display system like Chromium that is latest version of WireGL (Humphreys, 2001&2002). WireGL is a kind of Client-Server Model, which one rendering server sends the data of rendering to many computers. While it can use the application without modification of source, it requires heavy network traffics. The other type of operating software is VR Juggler (Cruz-Neira, 2002), and CAVE Library that is a kind of Master-Slave Model. In the Master-Slave Model, every computer has same application programs to render the image that only keep the synchronization of rendering and events. But, these programs require a specialized skill and knowledge to modify the source of program for the certain rendering PC-Cluster system.
series CAADRIA
email jaehoryu@hi.pi.titech.ac.jp, naoki@hi.pi.titech.ac.jp, msato@pi.titech.ac.jp, rohno@n.cc.titech.ac.jp, msoeda@n.cc.titech.ac.jp
last changed 2006/04/17 16:48

_id ddssar0217
id ddssar0217
authors Kacher, S., Bignon, J.C., Halin, G. and Duffing, G.
year 2002
title The Content-Based Image Retrieval as an Assistance Tool to the Architectural Design
source Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings Avegoor, the Netherlands), 2002
summary The architectural design requires a research of ideas and a documentation to help the designer in its creation work. It is a domain where the use of pictures (drawing, photography,…) is essential, because the information transmitted by photographic images are often more easily to understand than the one transmitted by texts. The goal of this work is to show the help that can bring the research of pictures indexed by visuals criteria, as colour, texture and shape, in the architectural design domain. If weaccept the principle that " an image is better than 10000 words ", we can make the hypothesis that an image research indexed by visual criteria can bring a supplementary help to the designer when he tries to resolve design problems. We tested a research tool resting on image indexation with graphic attributes. Two types of corpora have been used. The first one contains images illustrating building products and the second one shows buildings or parts of buildings, which illustrate the wood architecture domain. The objective of this experiment is to evaluate the relevance of this type of image indexing according to identified users needs. We try to determine which type of visual criteria is the most appropriate to help the designer in the various phases of the design process.
series DDSS
last changed 2003/08/07 14:36

_id 24d4
authors Gaete, Marcela and Pardow, Irene
year 2002
title Diseño de Interfase - Metodología de acercamiento a la construcción de entornos virtuales [Interphase Design - Methodology of Approach to the building of Virtual Environments]
source SIGraDi 2002 - [Proceedings of the 6th Iberoamerican Congress of Digital Graphics] Caracas (Venezuela) 27-29 november 2002, pp. 175-179
summary The project we are presenting is based on our professional experience in virtual interface design of multimedia, in CD-ROM and Web format, which has been developed in our design workshops. Our project methodology has one common basis: The metaphorical and conceptual argument for the creation of virtual environments is supported by the observation of the physical environment of human beings and the objects that surround them.The research we have carried out is aimed at establishing a project methodology for interface design based on the hypothesis that observation and knowledge of the relationship between man and environment (architectural and urban), man and object (literacy and symbolic representation) is the basis for the design of recognizable virtual environments. These are functional, representative and efficient elements for the achievement of communicative objectives of such virtual environments. The project reference that supports our research is the outcome of academic and professional project analysis. These projectswill support the demonstration of the suggested methodology which, in the course of the presentation, will be applied to a project to be developed and whose metaphorical basis is the city of Valparaiso.The objective is to use the urban environment as a metaphorical argument for the design of a virtual environment for the Cultural and Historical Registry of Literature, Plastic Arts and Chilean Architecture where Valparaiso has served as reference, source of inspiration and object of study. Together with the methodological project, we will present the instruments that have been created for reference analyis with the purpose of interface design and in order to facilitate a mechanism to evaluate interface design projects.
series SIGRADI
email marcela.gaete@uniacc.cl, ipardow@uniacc.cl
last changed 2016/03/10 08:52

_id 9f9c
authors Hu, Xiaochun
year 2002
title An Information-based Framework for Composites Design
source Drexel University
summary The heterogeneity of composites determines that composite materials can be engineered to better satisfy a specific design requirement. The main problems that have hindered the application of composites are the need for the material and manufacturing design to be conducted simultaneously, the involvement of a large number of design factors, the difficulty in the characterization of composites, and the inherent repetition of the design process. Considering these problems, this thesis presents an information-based framework for composites design. This research consists of four main aspects: (1) The development of a heterogeneous CAD modeling algorithm and an integrated CAD/CAE method, and their application in a unit cell-based characterization of composite materials with a complex fiber form; (2)The development of a unit cell database for improving the material and manufacturing process design, which covers the design of its database model and the access strategies based on the logic architecture of unit cells and the relationships among elements of unit cells and with the environments; (3)The design of an Information-Based Design Support System (IBDSS) to support the composites design by using the unit cell database, in which the blackboard framework is adopted for the system to organize various computer techniques for different design stages, and to support the design iterating to satisfactory ones incrementally and efficiently, and the data structure of the blackboard, the algorithm to control design iterations, and design procedures for every stage are studied; and (4) The introduction of a ranking-based unit cell evaluation methodology and effective ranking factors for facilitating and improving the composite design process. The approach improves the efficiency of composites design by automating design iterations, supporting composite characterization, alleviating the cost of composite material and manufacturing method design, and assisting in tailored material selection. Case studies are presented to show how the IBDSS is applied to support composites design.
keywords Mechanical Engineering
series thesis:PhD
email xiaochun.hu@drexel.edu
last changed 2003/02/12 21:37

_id 192eaea2001
id 192eaea2001
authors Kardos, Peter
year 2002
title Perceptual Evaluation of the Spatial Manifestations of Urban Structures
source Environmental Simulation - New Impulses in Planning Processes [Proceedings of the 5th European Architectural Endoscopy Association Conference / ISBN 3-922602-85-1]
summary The objective of this contribution is to bring to the attention of the community of experts in the field of architectural simulation the interdependence of the spatial manifestations of material components of urban environments and the phenomena of visual perception and imagination which we practically employ in education, professional design and which we also try to use in our contact with the clients. The way towards finding new qualities of urban environments should be dominated by our efforts to understand and perceive the urban structure as a real space-time manifestation, which is being mediated to the user also as a sensually experienced image (scene). Its atmosphere and informative content give impulses for an individualized reaction from various aspects. The content of the experience is multileveled and the sensorial effects of its iconic components can be precisely verified by means of simulation processes in temporal sequences. Taking these aspects as basis, we are developing methods, which would by taking determined conditions into consideration, broaden the spectrum of research, verification, or evaluation of the real spatial manifestations and interactive actions in situ as well as their possible anticipation and performance in laboratory conditions. Perceptual simulation is, together with the significance of experiencing and evaluating the urban environment in the eye-level horizon, a starting point of spatial model simulation methods as a supportive experimental creative and verification tool. The new information technologies and the creative technical cooperation of analog and digital iconic simulation systems create unconventional possibilities for exact recording of information and impulses for the complicated transformational process engaging more actively the community in their participation. Practice in teaching architectural design has verified
series EAEA
email kardos@fa.stuba.sk
more http://info.tuwien.ac.at/eaea
last changed 2005/09/09 08:43

_id 76d6
authors Kós, José Ripper
year 2002
title The Digital Historical Researcher
source Connecting the Real and the Virtual - design e-ducation [20th eCAADe Conference Proceedi_gs / ISBN 0-9541183-0-8] Warsaw (Poland) 18-20 September 2002, pp. 502-510
summary Abstract. 3D modeling is many times applied as a tool to represent historical buildings or urban settings. Most of the time, however, its importance in the research process is minimized. Few researchers credit it as an instrument to discover and understand a historical process. The objective of this paper is to present 3D modeling as an important part of an architectural or urban historical research process. This argument is presented through 3D modeling previous experiences related to historical research, the concept of ‘ur-history’, conceived by Walter Benjamin during his major research project about the history of XIX Century Paris and also our research group examination of the growth of a South American city and the design development of a Modern Architecture icon in that city. In both cases historical research was based primarily in the modeling process, which synthesizes all data collected from plans, archive images and documents, books and analyses of existing artifacts.
series eCAADe
email josekos@ufrj.br
last changed 2002/09/09 17:19

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

_id b6f7
authors Morozumi, M., Sueshige, Y., Uchiyama, T. and Inoue, S.
year 2002
title Linked QTVR System for SimulatingCitizens’ Strolling Around Activities
source Thresholds - Design, Research, Education and Practice, in the Space Between the Physical and the Virtual [Proceedings of the 2002 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-11-X] Pomona (California) 24-27 October 2002, pp. 217-227
summary This paper discusses a city model using the linked QTVR (cylinder-VR) technique to study relationshipsbetween people’s behavior while strolling around downtown shopping districts, and visual stimuli in eachpart of the district. At the beginning of the study, because a large city model was required, a majorobstacle was the necessity of taking a large number of photographic images of the area, especiallyimages with wide vertical view angles. The objectives of this paper are to: (a) discuss the major featuresof the simulation system and its uses for the study, (b) discuss a refined method of producing acylindrical image of QTVR allowing the operator to look up almost 56 degrees, and (c) evaluate theperformance of the developed system through experiment by 30 university students who know thedistrict well.
series ACADIA
email moro@arch.kumamoto-u.ac.jp
last changed 2002/10/26 23:25

_id e721
authors Nitsche, Michael and Roudavski, Stanislav
year 2002
title Building Cuthbert Hall Virtual College as a Dramatically Engaging Environment
source PDC 02 - Proceedings of Participatory Design conference, T. Binder, J. Gregory, I. Wagner (eds.), Malmö. Sweden, 23-25 June 2002 [ISBN 0-9667818-2-1]
summary This paper outlines the interdisciplinary nature, collaborative work patterns and role of aesthetics in the Cuthbert Hall Virtual College research project at the Cambridge University Moving Image Studio (CUMIS) and the Centre for Applied Research in Education Technology (CARET). The project identifies key properties of dramatically engaging real-time three-dimensional virtual environments (RT 3D VE) and how the holistic experiential phenomenon of place is organised and mediated through spatial narrative patterns. Interdisciplinary by nature, the project requires a collaborative approach between science, engineering, media and architecture, and the results are revealing for all these areas. The Cuthbert Hall project invites discussion of the importance in the creation and use of RT 3D VE's - under single and multi-user conditions - of articulate aesthetics (the quality of architectural, visual and audio design; the production and incorporation of dramatic properties) and of the conditions required for collaborative, communicative use of the environment. The full theoretical and technical discussions as well as the evaluation results are outside the scope of this submission.
keywords Real-time virtual environment, Computer Game, Place, Mediation, Expressive space
series other
email stanislav.roudavski@cumis.cam.ac.uk
last changed 2003/02/09 15:03

_id b2f6
authors Schira, Gretchen
year 2002
title Analysis of Digital Image Properties and Human Preference
source Thresholds - Design, Research, Education and Practice, in the Space Between the Physical and the Virtual [Proceedings of the 2002 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-11-X] Pomona (California) 24-27 October 2002, pp. 413-422
summary The three studies summarized in this paper present evidence that aesthetic preference for visualsurface texture is closely correlated with spatial frequency and orientation. The stimuli used were digitalversions of real environments, in the sense that they originated in photographs of real surfaces.Correlations are significant, and robust, and they were not effected by identifiability of the images.Theoretically, this points to the possibility that aesthetic preferences for objects in the builtenvironment—‘virtual’ and ‘real’—are not exclusively devoted to culture, memory and association, aspost-modern discourse would dictate. Although more work needs to be done, it nevertheless points tothe potential that preference for digital/virtual as well as real architectural environments be consideredthe visual stimuli to which human beings are neurologically tuned. Digital technology provides themeans to implement such research, and computer simulations of ‘real’ environments will be the firstapplication. With an ability to adapt aesthetically to the changing human condition, the importantquestions are how should one adapt such surfaces and under what criteria or under what influence arethe adaptations made?
series ACADIA
email g.schira@bk.tudelft.nl
last changed 2003/05/16 17:23

_id ecaade03_373_117_wittkopf
id ecaade03_373_117_wittkopf
authors Wittkopf, Stephen K. and Foo, E-Jin
year 2003
title Discussing Image-Based Modeling Technology for 3D Digital Archival of Physical Architecture Models
source Digital Design [21th eCAADe Conference Proceedings / ISBN 0-9541183-1-6] Graz (Austria) 17-20 September 2003, pp. 373-380
summary Besides drawings, physical models are important forms of representation commonly used for architectural design. They can serve as a useful resource for teaching and research, provided there is a proper archiving system that allows easy retrieval. Architectural models in 3D digital format seem to be able to overcome the limitation of physical constraints – they can be easily accessed anytime and anywhere over the Internet. The most common way of 3D model documentation is through geometric-based 3D CAD software. Image-based modeling (IM) allows the 3D digital model to be created from photographic images. Debevec (1998) investigated the hybrid geometry- and image-based approach whilst Tsou (2002) and Hawkins (2001) focused on the application of IM for GIS and digitizing cultural artifacts respectively. This paper aims to compare physical models and their IM counterparts in terms of communication of vital architectural information. Experiments were conducted to evaluate the extent the IM model resembled the physical predecessor in terms of its geometry and visual appearance qualities/faithfulness. A survey was subsequently carried out to compare their performance in terms of the communication of vital architectural information about building designs to the observers. The tabulated results were then examined to help understand the opportunities and weakness of IM for 3D archival of physical architecture models
keywords Image-based modeling, architecture model, digital archiving, design resource
series eCAADe
email akiskw@nus.edu.sg
more http://www.arch.nus.edu.sg/akiskw
last changed 2003/09/18 07:13

_id sigradi2003_094
id sigradi2003_094
authors Bessone, M., Mantovani, G. and Schanz, J.
year 2003
title Multimedia y diseño arquitectónico diferente (Multimedia and different architectural design)
source SIGraDi 2003 - [Proceedings of the 7th Iberoamerican Congress of Digital Graphics] Rosario Argentina 5-7 november 2003
summary Hearing and touch may be incorporated into visual representation systems that historically covered creative process, now helped by multimedia. During 2002-2003 we developed an experimental design studio that challenged participants to design architecture from words (using their spelling, pronunciation, location, etc.) and through an inquiry based on the "concept of inwardness". Evoking a word from the association of images and texts as well as seizing its potential tactile and hearing dimensions completed what was a very interactive design process. Such process was utilized to generate images and ideas geared to design/make an "installation" to be displayed at art events.
keywords Architecture, Design, Word, Image, Sound
series SIGRADI
email mbessone@fadu.unl.edu.ar
last changed 2016/03/10 08:47

_id 0653
authors Czerner, Jürgen and Gatermann, Harald
year 2002
title Modeling and Rendering Virtual Architecture by Using Fisheye-Panorama-Based Images and Lightings in HDR-Quality
source SIGraDi 2002 - [Proceedings of the 6th Iberoamerican Congress of Digital Graphics] Caracas (Venezuela) 27-29 november 2002, pp. 172-174
summary We use digitally made spherical panoramas as background for vr visualisation in architectural sceneries instead of stitched photographs (fisheye-based or serical-mirror-based). For this reason we had the idea to develop the first fisheye-based digitalscanning panorama-camera together with the manufacturer Spheron. The ultimate step in reaching optimal quality not only as a background but also as a source of lighting the background-image is taken as a HDR-image. The high-dynamic-range-technology was developed by the Californian scientist Paul Devebec. High dynamic photographs contain a broader range of information between the very bright zones down to the very dark zones - a lot more than “normal” photographs (digital and analogue), which are named LDR (low dynamic range in comparison to HDR). Some software-products in the field of cad-visualisation in virtual and augmented reality already enable the use of HDR-images and open a new field of controlling daylight and artificial light simulations with photographed backgrounds instaed of synthetic ones. The combination of digitally produced (scanned) spericalimages together with the use of HDR open a wide range of new implementation in the field of architecture, especially in combining synthetic elements in existing buildings, e.g. new interior elements in an existing historical museum).
series SIGRADI
email fb1@fh-bochum.de
last changed 2016/03/10 08:50

_id a207
authors Czerner, Jürgen and Gatermann, Harald
year 2002
title Modeling and rendering virtual architecture by using fisheye-panorama-based images and lightings in HDR-quality
source Connecting the Real and the Virtual - design e-ducation [20th eCAADe Conference Proceedings / ISBN 0-9541183-0-8] Warsaw (Poland) 18-20 September 2002, pp. 569-571
summary We use digitally made spherical panoramas as background for vr-visualisation in architectural sceneries instead of stitched photographs (fisheye-based or serical-mirrorbased). For this reason we had the idea to develop the first fisheye-based digital-scanning panorama-camera together with the manufacturer Spheron. The ultimate step in reaching optimal quality not only as a background but also as a source of lighting the background-image is taken as a HDR-image. The high-dynamic- range-technology was developed by the Californian scientist Paul Devebec. High dynamic photographs contain a broader range of information between the very bright zones down to the very dark zones - a lot more than “normal” photographs (digital and analogue), which are named LDR (low dynamic range in comparison to HDR). Some software-products in the field of cad-visualisation in virtual and augmented reality already enable the use of HDR-images and open a new field of controlling daylight and artificial light simulations with photographed backgrounds instaed of synthetic ones. The combination of digitally produced (scanned) sperical images together with the use of HDR open a wide range of new implementation in the field of architecture, especially in combining synthetic elements in existing buildings, e.g. new interior elements in an existing historical museum).
series eCAADe
email fb1@fh-bochum.de
last changed 2002/09/09 17:19

_id ddssar0219
id ddssar0219
authors Koutamanis, Alexander
year 2002
title Verbal Retrieval of Pictorial Information
source Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings Avegoor, the Netherlands), 2002
summary The proliferation of on-line image databases and the utility of these images have triggered the development of content-based techniques for indexing and retrieval. Most techniques are characterized by a verbal interpretation of visual patterns for query formulation. The paper describes the integration of such verbal terms for architectural pictorial information in AZILE, a natural language interface that operates through a dialogue with the user. In this dialogue the user expresses queries as normal everydayutterances. These are parsed and matched to a thesaurus of architectural terms and concepts. The meaning and associations of these terms result into a preliminary fuzzy classification of available pictorialinformation. The purpose of AZILE is three-fold. Firstly, it serves as an incremental refinement of the query. Secondly, it facilitates direct retrieval of suitable information in a browsing fashion. Thirdly, itsupports machine learning by automatically indexing of the images with the terms identified in the user’s utterances.
series DDSS
last changed 2003/08/07 14:36

_id 24eaea2001
id 24eaea2001
authors Ohno, R., Katayama, M., Komatsuzaki, T. and Soeda, M.
year 2002
title Development of a Visual Simulation System Synchronized with Walking Motion - An application for a study of distance perception
source Environmental Simulation - New Impulses in Planning Processes [Proceedings of the 5th European Architectural Endoscopy Association Conference / ISBN 3-922602-85-1]
summary Conventional visual simulators allow observers to move in the simulated space by using a mouse or a joy-stick without the kinesthetic feeling of motion. However, the link between visual image and body motion is important to perceive the environment, especially when people are walking. In this paper, a visual simulation system was designed to synchronize the subject's walking motion on a treadmill with the video image shown on a HMD. In order to detect the walking motion, sensors were attached to both subject’s ankles. According to the detected motion, the treadmill rotates and a CCD camera moves in a model space. Because of the sensors’ low sensitivity and the time lag between the detected motion and treadmill rotation, the subjects couldn’t walk smoothly. Therefore, the walking speed which synchronizes with the video image was kept constant for each subject and the experimenter started up and stopped the simulator. The validity of this simulation system was examined by comparing the accuracy of distance estimation using the new simulator with that using the conventional system without walking motion. The “distance reproduction” method was applied to measure the perceived distance: subjects walked 25 meter in a real setting without being told the distance, and were asked to move the same distance in different conditions. Since the distance estimation became accurate in the condition with the walking motion, the validity of this simulator was secured. The following experiment was intended to investigate the influence of physical environmental features on perceived distance by using the simulation system. We operated some features using a scale model of a route and examined their influences. Subjects were asked to "walk" through a path consisted of two spaces with different physical features, and to respond by showing the proportion of the length of those two spaces. The result revealed that the distance of a narrower and lower ceiling path where people perceive clearer line perspective and faster optical flow tends to be perceived longer.
series EAEA
email rohno@n.cc.titech.ac.jp
more http://info.tuwien.ac.at/eaea
last changed 2005/09/09 08:43

_id 060b
authors Af Klercker, J.
year 1997
title A National Strategy for CAAD and IT-Implementation in the Construction Industry the Construction Industry
source Challenges of the Future [15th eCAADe Conference Proceedings / ISBN 0-9523687-3-0] Vienna (Austria) 17-20 September 1997
summary The objective of this paper is to present a strategy for implementation of CAD and IT in the construction and building management#1 industry in Sweden. The interest is in how to make the best use of the limited resources in a small country or region, cooperating internationally and at the same time avoiding to be totally dominated by the great international actors in the market of information technology.

In Sweden representatives from the construction and building management industry have put forward a research and development program called: "IT-Bygg#2 2002 - Implementation". It aims at making IT the vehicle for decreasing the building costs and at the same time getting better quality and efficiency out of the industry.

The presented strategy is based on a seminar with some of the most experienced researchers, developers and practitioners of CAD in Sweden. The activities were recorded and annotated, analyzed and put together afterwards.

The proposal in brief is that object oriented distributed CAD is to be used in the long perspective. It will need to be based on international standards such as STEP and it will take at least another 5 years to get established.

Meanwhile something temporary has to be used. Pragmatically a "de facto standard" on formats has to be accepted and implemented. To support new users of IT all software in use in the country will be analyzed, described and published for a national platform for IT-communication within the construction industry.

Finally the question is discussed "How can architect schools then contribute to IT being implemented within the housing sector at a regional or national level?" Some ideas are presented: Creating the good example, better support for the customer, sharing the holistic concept of the project with all actors, taking part in an integrated education process and international collaboration like AVOCAAD and ECAADE.

 

keywords CAAD, IT, Implementation, Education, Collaboration
series eCAADe
type normal paper
email jonas.af_klercker@caad.lth.se
more http://info.tuwien.ac.at/ecaade/proc/afklerck/afklerck.htm
last changed 2007/01/21 13:05

_id 9c41
authors Ahmad Rafi, M.E., Chee W.K., Mai, N., Ken, T.-K. N. and Sharifah Nur, A.S.A. (Eds.)
year 2002
title CAADRIA 2002 [Conference Proceedings]
source 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, 370 p.
summary Evolution of trends in the realm of computer aided architectural design (CAAD) has seen the convergence of technologies – complementing traditional tools with emerging sciences like Information Technology (IT) and multimedia applications. This appliqué of technologies has not just expanded the scope and enhanced the realm of CAAD research and practice, but is also breaking new frontiers. This creative nexus will be realised at the 7th International Conference on Computer Aided Architectural Design Research In Asia (CAADRIA 2002) to be held at the Faculty of Creative Multimedia, Multimedia University, Malaysia, between 18th-20th April, 2002. CAADRIA 2002’s theme, "Redefining Content", seeks to recognise and infuse these emerging components in the field of architecture and design with a holistic approach towards online, digital and interactive systems. The 41 papers compiled were selected through a blind review process conducted by an international review panel. To reflect the multi-disciplinary nature of this year's conference, the chapters are arranged topically to facilitate the in-depth study of key components. The component sessions include: // Web Design, Database and Networks // CAD, Modelling and Tools // Collaborative Design, Creative Design and Case Reasoning // Simulation and Prototyping // Virtual Environment and Knowledge Management // Design Education, Teaching and Learning /// We believe that this specialised approach will provide a deeper and more illuminating feel of the various components and their critical convergence in the field of architecture and design.
series CAADRIA
email ahmadrafi.eshaq@mmu.edu.my
more www.caadria.org
last changed 2002/04/25 17:26

For more results click below:

this is page 0show page 1show page 2show page 3show page 4show page 5... show page 25HOMELOGIN (you are user _anon_768249 from group guest) CUMINCAD Papers Powered by SciX Open Publishing Services 1.002