eCAD System Design - Applications in Architecture


  • Athanasios D. Styliadis The Alexander Institute of Technology and Education Department of Information Technology The Archimedes 2.2.17 Research Project P.O. Box 141, 574 00 Thessaloniki,Greece
  • Debbie G. Konstantinidou The Alexander Institute of Technology and Education Department of Information Technology The Archimedes 2.2.17 Research Project P.O. Box 141, 574 00 Thessaloniki,Greece
  • Kyriaki A. Tyxola The Alexander Institute of Technology and Education Department of Information Technology The Archimedes 2.2.17 Research Project P.O. Box 141, 574 00 Thessaloniki,Greece


e-learning documentation, modeling functionality, digital photography, CAD, historical living systems


The rapid advances in learning technologies, computer modeling, multimedia and spatial sciences, as well as the availability of many powerful graphics PCs and workstations, make 3-D modeling-based methods for personalized e-learning with eCAD (modeling) functionality feasible. Personalized eCAD learning is a new term in engineering, environment and architecture education, related to the development of learning educational units (3-D learning objects) with re-usable digital architecture functionality, and introduced to literature for the first time within this paper. In particular, for university education courses in eCAD, digital architecture, design computing and CAAD (reagarding spatial information systems, architectures, monuments, cultural heritage sites, etc.), such a e-learning methodolgy must be able to derive spatial, pictorial, geometric, spatial, topological, learning and semantic information from the target object (a 3-D model) or scene (a 3-D landscape environment) or procedure (a 3-D simulation approach to a phenomenon), in such a way that it can be directly used for e-learning purposes regarding the spatial topology, the history, the architecture, the structure and the temporal (time-based) 3-D geometry of the projected object, scene or procedure. This paper is about the system design of such a e-learning method. For this purpose, the requirements, objectives and pedagogical extensions are presented and discussed. Finaly, a practical project is used to demonstrate the functionality and the performance of the proposed methodology in architecture


P. Debevec, C. J. Taylor and J. Malik , "Modeling and Rendering Architecture from Photographs: A Hybrid Geometry- and Image-based Approach", Proceedings of SIGGRAPH 1996, pp. 11-21, 1996.

L. Dimen and I. Ienciu, "Environmental Management Plan", RevCAD Journal of Geodesy and Cadastre, Vol. 5, pp. 271-274, 2005.

I. Dzitac, "Random-filtred asynchronous iterative method", Bul.St. Univ.Baia Mare, Seria B, Mat. Inf., Vol. XVIN r.1, pp. 17-24, 2000.

I. Dzitac, Parallel and distributed procedures in solving of some operator equations / Procedee de calcul paralel si distribuit in rezolvarea unor ecuatii operatoriale, Ph.D. Thesis, Univ. "Babes-Bolyai" din Cluj-Napoca, 230 pg., 2002 (in Romanian).

I. Dzitac, S. Dzitac, E. Valeanu, "Web Distributed Computing for Landscape Architecture", in N. Eleftheriadis, A. Styliadis, I. Paliokas (eds), Proceedings of the International Conference "Landscape Architecture and New Technologies" - LANT07, 25-26 May 2007, Drama, Greece, ISBN 978-960-363-027-2, pp. 25-36, 2007.

M. Engeli and D. Kurmann, "Spatial objects and intelligent agents in a virtual environment", Automation in Construction, Vol. 5, pp. 141-150, 1996.

H. Haggren and S. Mattila, "3-D Indoor Modeling from Videography", In Proceedings of SPIE, Vol. 3174 (Videometrics V), pp. 14-20, 1997.

F. van den Heuvel, Automation in Architectural Photogrammetry (Line-Photogrammetry for the Reconstruction from Single and Multiple Images), Ph.D. Thesis, NCG and the Royal Netherlands Academy of Arts and Sciences (KNAW) (Eds.), ISBN: 9061322812, 2003, The Netherlands.

U. Hirschberg and A. Streilein, "CAAD meets digital photogrammetry: modelling 'weak forms' for computer measurement", Automation in Construction, Vol. 5, pp. 171-183, 1996.

Y. E. Kalay, "The impact of information technology on design methods, products and practices", Design Studies, Vol. 27, pp. 357-380, 2006.

P. Karampiperis and D. Sampson, "Adaptive learning object selection in intelligent learning systems", Journal of Interactive Learning Research, Vol. 15, No. 4, 2004.

G. Kazakeviciute, E. Januskevicius, R. Rosenbaum and H. Schumann, "Tamper-proof Image Watermarking, based on existing public key infrastructure", Informatica, Vol. 16, No. 1, pp. 75-92, 2005.

Pedro Leao Ramos Ferreira Neto and Margarida Amaral, "CAAD and e-Learning: a Blended Approach", eLearning Papers, Vol. 3, ISSN: 1887-1542, 2007.

D. Martin and I. Sommerville, "Patterns of cooperative interaction: ethnomethodology and design", ACM Transactions on Computer-Human Interaction, Vol. 11, No. 1, pp. 59-89, 2004.

N. K. Moutsopoulos, The Basilica of St. Achilleios in lake Prespes, Paratiritis Editions, ISBN: 960-260-993- 1, 1999, Thessaloniki (in Greek).

I. K. Petrovic, "Computer design agents and creative interfaces", Automation in Construction, Vol. 5, pp. 151-159, 1996.

B. Silva, V. Alvarez, P. Cezar, P. Carvalho and M. Gattass, "Insertion of three-dimensional Objects in Architectural Photos", Journal of WSCG, Vol. 10, No. 1, 2002.

A. Streilein, "Utilization of CAD models for the object oriented measurement of industrial and architectural objects", In International Archives of Photogrammetry and Remote Sensing, Vol. XXXI, Part B5, pp. 548-553, 1996.

A. Streilein, H. Beyer and T. Kersten, "Digital photogrammetric techniques for architectural design", In International Archives of Photogrammetry and Remote Sensing, Vol. XXIX, Part B5, pp. 825-831, 1992.

A. D. Styliadis, "Digital documentation of historical buildings with 3-d modeling functionality", Automation in Construction, Vol. 16, No. 4, pp. 498-510, 2007.

A. D. Styliadis, I. D. Karamitsos and D. I. Zachariou, "Personalized e-Learning Implementation - The GIS case", International Journal of Computers, Communications & Control, Vol. I, No. 1, pp. 59-67, 2006.

A. D. Styliadis and M. Gr. Vassilakopoulos, "A spatio-temporal geometry-based model for digital documentation of historical living systems", Information & Management, Vol. 42, pp. 349-359, 2005.

A. D. Styliadis, P. G. Patias and N. X. Zestas, "3-D Computer Modeling with Intra-Component, Geometric, Quality and Topological Constraints", Informatica, Vol. 14, No. 3, pp. 375-392, 2003.

A. D. Styliadis, Digital Documentation of Monuments and Sites with 3-D Geometry and Qualitative Information. Ph.D. Thesis, Faculty of Rural & Surveying Engineering, Aristotle University of Thessaloniki, 1997, Greece (in Greek).

A. Tsakiris, I. Filippidis, N. Grammalidis, D. Tzovaras and M. G. Strintziz, "Remote experiment laboratories using virtual reality technologies: The VRlab project", Acta Universitatis Apulensis (Mathematics and Informatics), Vol. 11, pp. 365-378, 2005.

M.-M. Vladoiu, "Towards building an open digital library for instructional design that facilitates reflective e-instruction", Informatics in Education, Vol. 3, No. 1, pp. 127-140, 2004.

W. Weber, "SelMa - Self-guided Learning in Teaching Mathematics", Informatics in Education, Vol. 3, No. 1, pp. 141-150, 2004.

Honggang Wu, Designing a Reusable and Adaptive e-Learning System, M.Sc. Thesis, University of Saskatchewan, Saskatoon, 2002.

A. Y. Yang, K. H. Huang, S. Rao,W. Hong and Y. Ma, "Symmetry-based 3-D reconstruction from perspective images", Computer Vision and Image Understanding, Vol. 99, pp. 210-240, 2005.



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