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Hits 41 to 60 of 225

_id 69f5
authors Chan, C., Maves, J. and Cruz-Neira, C.
year 1999
title An Electronic Library for Teaching Architectural History
source CAADRIA '99 [Proceedings of The Fourth Conference on Computer Aided Architectural Design Research in Asia / ISBN 7-5439-1233-3] Shanghai (China) 5-7 May 1999, pp. 335-344
summary This research project developed an electronic library of significant buildings chosen to represent seven selected periods of Western architectural history: Egyptian (Mortuary temple of Queen Hatshepsut), Greek (Parthenon), Roman (Pantheon), Romanesque (Speyer Cathedral), Gothic (Notre Dame Cathedral), Renaissance (Tempietto), and Modern (Des Moines Art Center). All buildings were reconstructed in their original or intended forms based on plans, drawings, photographs, and historical texts. Two products were generated by this project: (1) materials to be displayed on the World Wide Web, including rendered still images for perception, movies for a visual guide, and Virtual Reality Modeling Language (VRML) models for user navigation; and (2) virtual reality (VR) models to be displayed in the C2 (an improved version of the Cave Automatic Virtual Environment or CAVE facility). The benefits of these VR models displayed on the Web and in the C2 are their easy accessibility at any time from various geographic locations and the immersive experience that enhances viewersÌ understanding of the effects of spatial proportions on form and of colors on materials.
series CAADRIA
last changed 2000/01/13 11:23

_id caadria2005_b_4c_b
id caadria2005_b_4c_b
authors Chang, Ting-Yuan
year 2005
title Shift the Style: Supporting Product Design through Evolving Styles
source CAADRIA 2005 [Proceedings of the 10th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] New Delhi (India) 28-30 April 2005, vol. 2, pp. 240-245
summary How can we provide computational supports for product designers to actively utilize existing styles as driving force to achieve new designs? For a new style that can take the advantage from existing styles, we surveyed Case-Based Design and Case-Based Reasoning systems for product design and found discouraging results. We employ Learning Classifier Systems, a machine-learning paradigm, to perform automatic style classification. These classified styles are used to evolve new styles of designs.
series CAADRIA
last changed 2005/04/30 01:30

_id cf2017_084
id cf2017_084
authors Chen, Kian Wee; Janssen, Patrick; Norford, Leslie
year 2017
title Automatic Generation of Semantic 3D City Models from Conceptual Massing Models
source Gülen Çagdas, Mine Özkar, Leman F. Gül and Ethem Gürer (Eds.) Future Trajectories of Computation in Design [17th International Conference, CAAD Futures 2017, Proceedings / ISBN 978-975-561-482-3] Istanbul, Turkey, July 12-14, 2017, pp. 84-100.
summary We present a workflow to automatically generate semantic 3D city models from conceptual massing models. In the workflow, the massing design is exported as a Collada file. The auto-conversion method, implemented as a Python library, identifies city objects by analysing the relationships between the geometries in the Collada file. For example, if the analysis shows that a closed poly surface satisfies certain geometrical relationships, it is automatically converted to a building. The advantage of this workflow is that no extra modelling effort is required, provided the designers are consistent in the geometrical relationships while modelling their massing design. We will demonstrate the feasibility of the workflow using three examples of increasing complexity. With the success of the demonstrations, we envision the utoconversion of massing models into semantic models will facilitate the sharing of city models between domain-specific experts and enhance communications in the urban design process.
keywords Interoperability, GIS, City Information Modelling, Conceptual Urban Design, Collaborative Urban Design Process
series CAAD Futures
last changed 2017/12/01 13:37

_id cf2017_051
id cf2017_051
authors Chen, Kian Wee; Janssen, Patrick; Norford, Leslie
year 2017
title Automatic Parameterisation of Semantic 3D City Models for Urban Design Optimisation
source Gülen Çagdas, Mine Özkar, Leman F. Gül and Ethem Gürer (Eds.) Future Trajectories of Computation in Design [17th International Conference, CAAD Futures 2017, Proceedings / ISBN 978-975-561-482-3] Istanbul, Turkey, July 12-14, 2017, pp. 51-65.
summary We present an auto-parameterisation tool, implemented in Python, that takes in a semantic model, in CityGML format, and outputs a parametric model. The parametric model is then used for design optimisation of solar availability and urban ventilation potential. We demonstrate the tool by parameterising a CityGML model regarding building height, orientation and position and then integrate the parametric model into an optimisation process. For example, the tool parameterises the orientation of a design by assigning each building an orientation parameter. The parameter takes in a normalised value from an optimisation algorithm, maps the normalised value to a rotation value and rotates the buildings. The solar and ventilation performances of the rotated design is then evaluated. Based on the evaluation results, the optimisation algorithm then searches through the parameter values to achieve the optimal performances. The demonstrations show that the tool eliminates the need to set up a parametric model manually, thus making optimisation more accessible to designers.
keywords City Information Modelling, Conceptual Urban Design, Parametric Modelling, Performance-Based Urban Design
series CAAD Futures
last changed 2017/12/01 13:37

_id ee24
authors Chien, S.-F., Magd, D., Snyder, J. and Tsa, W.-J.
year 1998
title SG-Clips: A System to Support the Automatic Generation of Designs From Grammars
source CAADRIA ‘98 [Proceedings of The Third Conference on Computer Aided Architectural Design Research in Asia / ISBN 4-907662-009] Osaka (Japan) 22-24 April 1998, pp. 445-454
summary SG-CLIPS is a computer tool that supports the automatic generation of designs from a predefined set of grammar rules that encapsulate the composition principles of a certain style of design. It is an open system that accepts any grammar conforming to the conventions described in this paper. We demonstrate the system through an example and discuss the relation to shape grammars and limitations.
keywords Generative Systems, Shape Grammars, Rule-based Design Tools, CLIPS
series CAADRIA
last changed 1998/12/02 13:09

_id 8860
authors Choi, B.K., Barash, M.M. and Anderson, D.C.
year 1984
title Automatic Recognition of Machined Surfaces from a 3D Solid Model
source computer Aided Design. March, 1984. vol. 16: pp. 81-86 : ill. includes bibliography
summary It has been proposed that a direct link between CAD and CAM be provided through a computer-automated process planning system. Described in this paper are algorithmic procedures to identify machined surfaces (i.e., machining requirements) for a workpiece directly from its 3D geometric description. A machined surface is a portion of workpiece that can be generated by a certain mode of metal removal operation. Machined surfaces are algorithmically recognized from a 3D boundary file, and then their 2 1/2D descriptions are obtained in a data structure (format) suitable for an automated process planning system. A simplified boundary file data structure is introduced in order to explain the machined surface recognition procedures
keywords A machined surface type is defined as a pattern of faces, and a syntactic pattern recognition method is used to find the machined surface from the boundary file
series CADline
last changed 2003/06/02 11:58

_id 6966
authors Chuah, M.C., Roth, S.F., Kolojejchick, J., Mattis, J. and Juarez, O.
year 1995
title SageBook: Searching data-graphics by content
source Proceedings of CHI , ACM Press
summary Currently, there are many hypertext-like tools and database retrieval systems that use keyword search as a means of navigation. While useful for certain tasks, keyword search is insufficient for browsing databases of data-graphics. SageBook is a system that searches among existing data-graphics, so that they can be reused with new data. In order to fulfill the needs of retrieval and reuse, it provides: 1) a direct manipulation, graphical query interface; 2) a content description language that can express important relationships for retrieving data-graphics; 3) automatic description of stored data-graphics based on their content; 4) search techniques sensitive to the structure and similarity among data-graphics; 5) manual and automatic adaptation tools for altering data-graphics so that they can be reused with new data.
series other
last changed 2003/04/23 13:50

_id 2e43
authors Cipriani, Roberto and Decri, Anna
year 1986
title Approaching CAAD at Facolta' Di Architettura, Genova
source Teaching and Research Experience with CAAD [4th eCAADe Conference Proceedings] Rome (Italy) 11-13 September 1986, pp. 213-222
summary This paper describes a few aspects of the current research and teachings in the field of CAAD in the School of Architecture at the University of Genoa. In particular it analyses the capacity of a small system, which a single professional can afford and which provides a simple approach for the teaching of automatic drawing. This analysis has not yet been completed because it is a part of a thesis which is currently being written.
series eCAADe
last changed 1998/08/18 08:14

_id ga0123
id ga0123
authors Coates P., Appels, T. Simon, C. and Derix, C.
year 2001
title Current work at CECA
source International Conference on Generative Art
summary The centre for environment computing and architecture continues to experiment with new ways to form, and this paper presents three recent projects from the MSc programme. The three projects all share underlying assumptions about the use of generative algorithms to constructform, using fractal decomposition, lindenmayer systems and the marching cubes algorithm respectively to construct three dimensional "architectural" objects. The data needed to drive the morphology however ranges from formal proportional systems and Genetic L systems programming through swarming systems to perceptive self organising neural nets. In all cases, the projects pose the question what is architectural form. While after Stanford Anderson (Anderson 66) we know it is simplistic to say that it is an automatic outcome of a proper definition of the brief, it is also difficult to accept that the form of a building is an entirely abstract geometrical object existing without recourse to social or contextual justification. In anattempt to resolve these issues we have turned to the study of systems and general system theory as a way of understanding the mechanics of emergence and morphogenesis generally, and the
series other
last changed 2003/08/07 15:25

_id adcd
authors Cohen, Paol R. and Feigenbaum, Edward A. (editors)
year 1982
title The Handbook of Artificial Intelligence
source xviii, 639 p. Stanford, California: HeurisTech Press, 1982. vol. 3: See The Handbook of Artificial intelligence edited by Avron, Barr and Feigenbaum, Edward. Includes bibliography p. 565-586 and cumulative indexes
summary Part of three volumes, this volume contains chapters on models of cognition, automatic deduction, vision, learning and planning
keywords AI, deduction, learning, cognition, planning
series CADline
last changed 2003/06/02 11:58

_id 77bc
authors Cohen, S., Elber, G. and Bar-Yehuda, R.
year 1997
title Matching of freeform curves
source Computer-Aided Design, Vol. 29 (5) (1997) pp. 369-378
summary Freeform parametric curves are extensively employed in various fields such as computer graphics, computer vision, robotics, and geometric modeling. While manyapplications exploit and combine univariate freeform entities into more complex forms such as sculptured surfaces, the problem of a fair or even optimal relativeparameterization of freeforms, under some norm, has been rarely considered. In this work, we present a scheme that closely approximates the optimal relativematching between two or even n given freeform curves, under a user's prescribed norm that is based on differential properties of the curves. This matching iscomputed as a reparameterization of n - 1 of the curves that can be applied explicitly using composition. The proposed matching algorithm is completely automaticand has been successfully employed in different applications with several demonstrated herein: metamorphosis of freeform curves with feature preservations, keyframe interpolation for animation, self-intersection free ruled surface construction, and automatic matching of rail curves of blending surfaces.
keywords Dynamic Programming, Tangent/Gauss Map, Feature Recognition, Fairness
series journal paper
last changed 2003/05/15 19:33

_id 154d
authors Colajanni, B., Pellitteri, G. and Concialdi, S.
year 2002
title Intelligent Structures for Collaborating with the Architect
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. 360-364
summary The number of different designers with different competencies collaborating in a building project is today conspicuous. An undesired consequence is the possible rise of conflicts between decisions taken independently by more than one specialist on the same building object. The early detection of such conflicts is then one of the most important features in collaborative design. Moreover, of great interest would be the possibility not only of automatic detection but also of solution proposal of at least the most manageable of those conflicts. In this perspective smart models of building components could be very useful. This is possible giving the building elements, represented as objects, the specific intelligence. A simple example of this possibility is given in this paper. In a precedent work we proposed a way of managing elementary spatial conflicts between building components tending to occupy the same spaces. The automatic detection derived from the previous declaration of two levels of constraints (soft constraint and hard constraints) in such way that a violation of them could be immediately signaled to the actor wanting to take the decision triggering the conflict. In this paper the topic is the consequences of the rise of a spatial conflict (occupation of the same space) between a column of a spatial frame of columns and beams, and another building object of any sort subject to a soft or hard constraint. The procedure identifies the minimum displacement of the two objects, propagates the column displacement to the other structural elements connected to it and checks the feasibility of the new configuration of the structural schema both with regard to the possible rise of new conflicts and with the compliance to previous structural criteria.
series eCAADe
last changed 2002/09/09 17:19

_id ga0121
id ga0121
authors Collins, N. M.
year 2001
title Further Automatic Breakbeat Cutting Methods
source International Conference on Generative Art
summary Following the invention of an automatic breakbeat cutting algorithm in the style of early 90s jungle, further experiments are described. These are namely, the use of more advanced techniques to control choices in the original algorithm, and new algorithms for cutting including methods based on campanology and recursion. Automatic breakbeat cutting can reduce the effort of working by hand in a sequencer with MIDI triggering of a sampler. Furthermore, the parameterisation of the process concedes newtechniques that can be awkward to implement with a sequencer, for example, cutting in septuplet demisemiquavers. To improve the original algorithm, states, whether offsets, cut sizes or repetition counts, canbe governed by Charles Ames' method of statistical feedback. Weight distributions can be changed during a phrase to give more control of cut sequence structure. These processes are investigated in the light of the output pacing and variation of cut sequences. Campanology, or change ringing, is based on a small subset of a permutation group consistingof permutations that can only swap adjacent elements in distinct pairs. When acting upon offsets into the source a fluid series of undulating cuts can be produced. Recursive cutting is an analytical test of second order cutting. It takes a base sequence of [cut length, offset] pairs and further cuts them up, producing variations on a given cut sequence. The Warp Cutter is inspired by the thought of constant stutters and rolls. Probabilities control the likelihood of simple blocks, even rolls or geometric accelerating rolls, usually at very fast repetition rates. All methods have been implemented as SuperCollider patches and classes, and publiclyreleased to accompany this paper in the BBCut Library.
series other
last changed 2003/08/07 15:25

_id caadria2017_042
id caadria2017_042
authors Coorey, Ben and Coorey, Anycie
year 2017
title Generating Urban Form
source P. Janssen, P. Loh, A. Raonic, M. A. Schnabel (eds.), Protocols, Flows, and Glitches - Proceedings of the 22nd CAADRIA Conference, Xi'an Jiaotong-Liverpool University, Suzhou, China, 5-8 April 2017, pp. 261-269
summary Modern design of urban forms is venturing towards performative, site-specific architecture that are formed according to the attributes of its urban context. Parametric modelling techniques offer designers the ability to embed generative mechanisms into the design process to allow performance based design. This paper focuses on the development of a synthesis model that generates an Urban Form schema using computational design principles. The design system illustrates a rule-based systematic approach to urban form generation and is a precursor to the automatic exploration of urban forms based on design analytics and evaluation of urban metrics. The role of the architect begins to shift from the designer of objects to the designer of processes with urban planning following a trajectory of data-generated and contextual specific design.
keywords Parametric Modelling; Urban Modelling; Scripting; Urban Analysis
series CAADRIA
last changed 2017/05/09 08:05

_id e201
authors Coulon, Carl-Helmut
year 1995
title Automatic Indexing, Retrieval and Reuse of Topologies in Architectural Layouts
source Sixth International Conference on Computer-Aided Architectural Design Futures [ISBN 9971-62-423-0] Singapore, 24-26 September 1995, pp. 577-586
summary Former layouts contain much of the know-how of architects. A generic and automatic way to formalize this know-how in order to use it by a computer would save a lot of effort and money. However, there seems to be no such way. The only access to the know-how are the layouts themselves. Developing a generic software tool to reuse former layouts you cannot consider every part of the architectural domain or things like personal style. Tools used today only consider small parts of the architectural domain. Any personal style is ignored. Isnít it possible to build a basic tool which is adjusted by the content of the former layouts, but maybe extended inclemently by modeling as much of the domain as desirable? This paper will describe a reuse tool to perform this task focusing on topological and geometrical binary relations.
keywords Case-Based Reasoning, Graph Matching, Structural Comparison, Topology
series CAAD Futures
last changed 1999/08/03 15:16

_id de43
authors Counsell, J.
year 2000
title The management and visualisation of 3-dimensional models using a spatial database
source CIDAC, Volume 2 Issue 4 November 2000, pp. 225-235
summary Each year, computer-aided architectural design (CAAD) systems in common use are enhanced and gain facilities that ease 3-dimensional (3D) modelling. Consequently, large complex datasets are increasinly common during the creation and management of 3D models of buildings and urban areas. Uses for such models range from the automatic generation of drawings and schedules to virtual reality (VR) and visualisation across the web. Geographic information systems (GISs) are optimised for the management and retrieval of spatial data and may be used to assist both management and visualisation of large 3D datasets using open standards, such as the ISO standard virtual reality modelling langauge (VRML). Experience gained in the use of such systems indicates a need for specific procedures for recording 3D data and creating linkages to other information. It is suggested that these procedures are applicable to a broad range of such models.
keywords VRML, Urban 3-Dimensional Models, GIS Management
series journal paper
last changed 2003/05/15 19:23

_id 49d5
authors Coyne, Richard D. and Newton, S.
year 1990
title Design Reasoning by Association
source Environment and Planning B: Planning and Design. 1990. vol. 17: pp. 39-56
summary The utility is demonstrated of a parallel distributed processing (PDP) approach to processing certain kinds of information of interest to designers. The information is of the kind that could be stored on a Hypercard stack. A system which facilitates the automatic linking of information on the basis of similarity is demonstrated. This approach fits within an overall framework of design reasoning by association
keywords reasoning, design, methods
series CADline
last changed 2003/05/17 08:13

_id caadria2019_453
id caadria2019_453
authors Dai, Rushi, Kerber, Ethan and Brell-Cokcan, Sigrid
year 2019
title Robot Assisted Assembly of Steel Structures - Optimization and Automation of Plasma Cutting and Assembly
source M. Haeusler, M. A. Schnabel, T. Fukuda (eds.), Intelligent & Informed - Proceedings of the 24th CAADRIA Conference - Volume 1, Victoria University of Wellington, Wellington, New Zealand, 15-18 April 2019, pp. 163-172
summary The digitization of the construction industry integrates innovations in design and fabrication to achieve increased efficiency and performance. This paper details the development of a process for optimizing and automating the design and production of branching steel structures including the use of robotic construction, evolutionary optimization of path planning and the creation of an automatic height control robotic end effector.
keywords digitalization; optimization; automation; steel structures; plasma cutting
series CAADRIA
last changed 2019/04/16 08:25

_id ecaade2018_438
id ecaade2018_438
authors Das, Subhajit
year 2018
title Interactive Artificial Life Based Systems, Augmenting Design Generation and Evaluation by Embedding Expert Opinion - A Human Machine dialogue for form finding.
source Kepczynska-Walczak, A, Bialkowski, S (eds.), Computing for a better tomorrow - Proceedings of the 36th eCAADe Conference - Volume 1, Lodz University of Technology, Lodz, Poland, 19-21 September 2018, pp. 85-94
summary Evolution of natural life and subsequently selection of life forms is an interesting topic that has been explored multiple times. This area of research and its application has high relevance in evolutionary design and automated design generation. Taking inspiration from Charles Darwin's theory, all biological species were formed by the process of evolution based on natural selection of the fittest (Darwin, n.d.) this paper explains exploratory research showcasing semi-automatic design generation. This is realized by an interactive artificial selection tool, where the designer or the end user makes key decisions steering the propagation and breeding of future design artifacts. This paper, describes two prototypes and their use cases, highlighting interaction based optimal design selection. One of the prototypes explains a 2d organic shape creator using a metaball shape approach, while the other discusses a spatial layout generation technique for conceptual design.
keywords design generation; implicit surfaces; artificial life; decision making; artificial selection; spatial layout generation
series eCAADe
last changed 2018/07/24 10:22

_id 7082
authors Dawood, N.
year 1999
title A proposed system for integrating design and production in the precast building industry
source The Int. Journal of Construction IT 7(1), pp. 72-83
summary The UK construction industry is going through a major re-appraisal, with the objective of reducing construction costs by at least 30% by the end of the millennium. Precast and off-site construction are set to play a major role in improving construction productivity, reducing costs and improving working conditions. In a survey of current practices in the prefabrication industry, it was concluded that the industry is far behind other manufacturing-based industries in terms of the utilisation of IT in production planning and scheduling and other technical and managerial operations. It is suggested that a systematic, integrated, computer-aided, approach to presenting and processing information is needed. The objective of this paper is to introduce and discuss the specifications of an integrated intelligent computer-based information system for the precast concrete industry. The system should facilitate: the integration of design and manufacturing operations; automatic generation of production schedules directly from design data and factory attributes; and generation of erection schedules from site information, factory attributes and design data. It is hypothesised that the introduction of such a system would reduce the total cost of precasting by 10% and encourage clients to choose precast components more often.
series journal paper
last changed 2003/05/15 19:45

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