Proceedings, XXth congress: Proceedings, XXth congress

Altan, M. Orhan

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Multivolume work

Persistent identifier:: 1663674213

Title:: Proceedings, XXth congress

Sub title:: Istanbul, 12 - 23 July 2004

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 1663674213

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.; Auch bezeichnet als XXth International Congress for Photogrammetry and Remote Sensing

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Document type:: Multivolume work

Volume

Persistent identifier:: 166368779X

Title:: Proceedings, XXth congress

Scope:: IV, 226 Seiten

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 166368779X

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(35,B8)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: VIRTUAL ENVIRONMENTS IN PLANNING AFFAIRS Getting closer to geographic data, a better way! Mohammed Abdul Mannan, Bogdahn Juergen.

Document type:: Multivolume work

Structure type:: Chapter

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B-YF. Istanbul 2004 3.5 Implementation Perception is related to the degree of realism experienced by the viewer. The basic concept of VR is the direct coupling of the head position and viewing direction of the user with the viewing position used to generate the image on the display. The head position of the user is constantly tracked and fed into the display algorithm to calculate at each moment a correct stereoscopic and perspective display of the scene. This strong coupling of the current eye position of the user and the image offered by the display system, gives the user the illusion of ‘immersiveness’. The ultimate VR-systems completely immerse the user's personal viewpoint inside the virtual world. A major distinction of VR-systems is the mode with which they interface to the user. Current systems range from true immersive to nonimmersive displays. These involvements allow the planners a better platform for decision-making and also help laypersons to understand the complex geographic data, as if they see in reality. The users manipulate what is perceived to be "real" objects in the same manner as they would manipulate them in the real world, as opposed to the typing, pointing and clicking, one traditionally uses to manipulate objects when you interact in other computer environments. For example, to move an object in a VR environment, you may grab the object with your hands, lift it as you normally lift objects in the real world, and put it down wherever you want it inside the virtual environment. Now the program lets you see the attribute data as well. 4. CONCLUSIONS Whether the challenge is to pick a location for a new facility or decide how to construct it, GIS is important in the decision- making process. By combining 3-D GIS, integrated with applications like Web3D to share information over Internet and get input from the public will enhance planning process. When combined with immersive environments, results are superior to desktop systems for characteristics such as ‘intuitive working’, ‘real-time interaction’ and ‘full-scale modelling in a 3D immersive environment’. 3D information systems with a connection to attribute data could be more helpful in addition to geometry visualization. For example in the field of underground supply lines, which have a complex structure. In a large area of network, supply lines are layered one above the other and so the importance of z coordinate exists. Planners can visualize the network more closer may be to find space for new lines or to know details about with access to attribute data. The major advantage of Web 3D concept is it can create the database connection between the 2D shape file and the 3D VRML model by means geometry and representative point (A point inside of geometry). So, the creation of 3D VRML model can be from any source for example aerial photos. whilst the VRML model should be georeferenced common to the 2D shape file. The project can be further improved by providing functionalities of online updating of attribute data and other thematic queries based on attribute data as well. The concept of connecting and display of attribute and 3D geometry for VR visualizations were successful with direct use of text file created in web 3D part. And a lot of improvements can be done on the basis of this idea to make it more useful for 26 planning applications. The VR application can be further enhanced to access shape files based on same concept above, enabling to perform basic functionalities as of GIS software. 4.1 References and/or Selected Bibliography References from Books: Pimentel, Ken and Teixeira, Kevin 1993. Virtual reality through the new looking glass. Windcrest Books, USA, pp. 66- 86 Stuart, Rory 1996. The design of virtual environments. McGraw-Hill Inc. USA, pp. 97-125 Zlatonova, Siyka 2000. Phd thesis, 3d GIS for Urban development, Thesis ICGV, GrazUT, Austria and ITC, The Netherlands, ITC Dissertation Series No69, http://www.gdmc.nl/zlatanova/PhDthesis/pdf/content.html References from Other Literature: Bodum, L., I. Afman and J. Smith, 1998. Spatial planning moves out of the flatlands, in: Proceedings of AGILE, Enschede, The Netherlands. Ousterhout, J., 1993. Tcl and the Tk Toolkit (Addison-Wesley, Reading, Massachusetts). Tempfli, K., 1998. Urban 3D topologic data and texture by digital photogrammetry, in:Proceeding of ISPRS, March-April, Tempa, Florida, USA, CD-ROM. User Guide, Cortona SDK 4.1 http://www.parallelgraphics.com/developer/ References from websites: Blach, R., Landauer, J. Rosch, A., and Simon, A., 1998. A Highly Flexible Virtual Reality System http://vr.iao.fhg.de/papers/fgcs98.pdf (accessed Dec 2003) Finley, Darel. R., 1998. Point-In-Polygon Algorithm. http://www.alienryderflex.com/polygon/ (accessed Aug 2003) Morley, Chris 2002. Tool: libVRML97 http://www.vermontel.net/-cmorley/vrml.htm. (accessed Sep 2003) VRML '97 Specification. http://www web3d.org/x3d/specifications/vrml/ISO_IEC_14772 -All/index.html. (accessed Jan 2003) Warmerdam, Frank 2002. Tool: Shapelib v 1.26. http://shapelib.maptools.org/ (accessed May 2003) 4.2 Acknowledgements We would like to express heartfelt gratitude to Prof. Dr. Volker Coors at Stuttgart University of Applied Sciences for the continuous support, guidance and motivation throughout the research. Our sincere thanks to City administration department (Stadtmessungsamt), Stuttgart for providing the necessary data, without which, the idea wouldn't have proper fuel. We would like to extend our thanks to Fraunhofer Research Institute for industrial training IAO in Stuttgart, for providing software and hardware for the project part of Virtual reality, especially Mr. Frank Haselberger for his invaluable support.

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