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1 NAIST-IS-MT

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4 Intaractive terrain generation within Immersive Modeling System 3 Ryutarou Morimoto Abstract This paper presents an immersive modeling system for generating 3-D terrain models of mountain scenery. In the proposed system, a user can design 3-D terrain models by drawing external forms of terrain on the 2-D plane of the sloped rear-projection display and pulling a mountaintop in 3-D space. As a result, complicated arbitrary terrain models are generated easily and eciently by repeating these intuitive operations. Keywords: virtual reality, immersive modeling system, terrain generation, interactive modeling 3 Master's Thesis, Department of Information Systems, Graduate School of Information Science, Nara Institute of Science and Technology, NAIST-IS-MT , February 9, ii

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30 [1], \, " ESTRELA, No. 59, pp , February [2] Ming Wan, Huamin Qu, Arie Kaufman \Virtual Flythrough over a Voxel- Based Terrain, " Proc. IEEE Virtual Reality '99, pp , [3] \ CG", \, Vol. 41, No. 4, pp , [4] \3D Shade Debut CG 26 1, \, No. 105, July [5] \3D Shade Debut CG 27 2, \, No. 106, August [6] F.Kenton Musgrave, Craig E. Kolb, Robert S. Mace \The Synthesis and Rendering of Eroded Fractal Terrains, \ Proc. ACM SIGGRAPH '89, Vol.23, No.3, pp.41-50, [7] Richard Szeliski, Demetri Terzopoulos \From Splines to Fractals, \ Proc. ACM SIGGRAPH '89, Vol.23, No.3, pp.51-60, [8] Przemyslaw Prusinkiewicz, Mark Hammel \A Fractal Model of Mountains with Rivers, \ Proc. Graphics Interface '93, pp , [9] Robert Marshall, Rodger Wilson, Wayne Carlson \Procedure Models for Generating Three-Dimentional Terrain, \ Proc. ACM SIGGRAPH `80, pp , [10],, \, \, Vol. 93, No. 92, pp 61-68,

31 [11],, \ -, \, Vol.28, No.1, pp.35-45, [12] \VISTAPRO2 ",, [13] \, \ NIKKEI COMPUTER GRAPHICS, January [14] Wolfgang Krueger, Bernd Froehlich \The Responsive Workbench, \ Proc. IEEE Conputer Graphics and Applications, [15] Doug A, Bowman, Larry F. Hodges \User Interface Constraints for Immersive Virtual Environment Applications, \ Graphics, Visualization and Usability Center Technical Report, GIT-GVU-95-26, [16],,,, \ VLEGO, \ (A), Vol.J80-A, No.9, pp , [17] Ryugo Kijima, Kimiko Shirakawa, Michitaka Hirose, Kenji Nihei \Virtual Sand Box:Development of an Application of Virtual Environments for Clinical Medicine, \ PRESENCE, Vol. 3, No. 1, pp , [18],,, \, \ 5, pp , [19] Andrew S.Forsberg, Joseph J, LaViola Jr., Robert C. Zeleznik \ErgoDesk: AFramework for Two-and Three-Dimensional Interaction at the ActiveDesk, \ Proc. 2nd International Immersive Projection Technology Workshop, [20],,, \2 3, \ ( ), No. 99, Vol. 647, pp ,

mthesis.dvi

mthesis.dvi NAIST-IS-MT9951117 001 9 ( ) 3 3 CG, VR.,,,,.,,.,, 3,.,,, 3.,, 3,.,,.,,.,,, 3, NAIST-IS- MT9951117, 001 9. i Interactive Terrain Generation in a Virtual Environment 3 Ryutarou Morimoto Abstract 3-D terrain

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