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研究生:李佳穎
研究生(外文):Chia-Ying Lee
論文名稱:一套美髮造型互動式系統
論文名稱(外文):An Interactive System for 3D Hairstyles
指導教授:歐陽明歐陽明引用關係
指導教授(外文):Ming Ouhyoung
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:資訊工程學研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:英文
論文頁數:40
中文關鍵詞:髮型頭髮建模頭髮著色理想流體三維人物
外文關鍵詞:Hairstylehair modelinghair renderingideal flow3D characters
相關次數:
  • 被引用被引用:5
  • 點閱點閱:647
  • 評分評分:
  • 下載下載:172
  • 收藏至我的研究室書目清單書目收藏:1
在本篇論文中,我們提出一個互動式髮型製作系統。使用者可以藉由剪、梳、燙等操作,改變髮型,並著色輸出擬真頭髮影像。此系統分為製作、造型、著色三個階段。在製作階段,我們用物理重力場模擬頭髮彎曲現象,並進行碰撞測試。造型階段,我們利用工具改變頭髮的長度、位置、曲度。並發展了六種以流體力學為基礎的造型工具。使用者可以即時地在系統中利用工具編輯頭髮,創造各式髮型。此系統改進了繁複的頭髮造型程序,並能計算陰影與背光等效果,繪製產生擬真的頭髮影像。
This paper presents an interactive system for creating natural looking 3D hairstyles, by which users can cut, comb and perm the hair model and generate realistic hair images. The system contains three stages: modeling, styling and rendering. We produce a physical hair model using a cantilever beam simulation with collision detection. Then the styling phase is a hair editing process, using styling tools to change the length, position and curvature of hair strands. We adopt the ideal fluid model as the basis of our styling operations and developed six algorithms suitable for styling. Users can interact with tools in real-time and create various convincing hairstyles. Our system increases the ease of hairstyling and can render natural hair images with shadow and back-lighting effects.
ACKNOWLEDGEMENT …………………………………………………………Ⅰ
ABSTRACT (IN CHINESE) ………………………………………………… Ⅱ
ABSTRACT(IN ENGLISH) ……………………………………………… Ⅲ
CONTENTS ………………………………………………………………… Ⅳ
LIST OF FIGURES ……………………………………………………… Ⅵ
CHAPTER 1 Introduction …………………………………………… 1
1.1Motivation …………………………………………………… 1
1.2Previous Work ……………………………………………… 2
1.3Hair Characteristic ………………………………………… 3
CHAPTER 2 System Overciew ………………………………………… 5
CHAPTER 3 Hair Modeling ……………………………………………… 8
3.1 Physical Hair Models ………………………………………… 8
3.2 Cantilever Beam Simulation for Hair Bending …………… 10
3.3 The Wisp Model …………………………………………………… 13
3.4 Collision Detection ……………………………………………… 14
3.5 Spline Representation …………………………………………… 16
CHAPTER 4 Hair Styling ………………………………………………… 19
4.1 Ideal Flow Formulation …………………………………………… 19
4.2 Selection Mechanism …………………………………………… 21
4.3 Styling Tools ……………………………………………………… 22
CHAPTER 5 Hair Rendering …………………………………………… 27
5.1 Shadow Map and Density Map ………………………………………… 27
5.2 Illumination Model ……………………………………………… 29
5.3 Anti-Alising and Image Blending ……………………………… 31
5.4 Lighting Effects of Hair Rendering …………………………… 32
Chapter 6 Results …………………………………………………… 33
Chapter 7 Conclusions and Future Works ……………………………35
Reference ………………………………………………………………… 37
[1] S. Hadap and N. Magnenat-Thalmann, “Interactive hair styler based on fluid flow”, Eurographics Workshop on Computer Animation and Simulation''2000, Springer-Verlag, pp. 87-99, August 2000.
[2] N. Magnenat-Thalmann, S. Hadap, P. Kalra, “Sate of the art in hair simulation” International Workshop on Human Modeling and Animation, Korea Computer Graphics Society, pp. 3-9. June 2000.
[3] F. Neyret, “Modeling, animating, and rendering complex scenes using volumetric textures”, IEEE Transactions on Visualization and Computer Graphics, vol. 4, no. 1, pp. 55—70, January-March 1998.
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[5] A. Daldegan, N. M. Thalmann, T. Kurihara, and D. Thalmann, “An integrated system for modeling, animating and rendering hair”, Computer Graphics Forum (Eurographics ’93), vol 12, no 3, pp 211—221, 1993.
[6] K. Anjyo, Y. Usami, and T. Kurihara, “A simple method for extracting the natural beauty of hair”, Computer Graphics (Proceedings of SIGGRAPH 92), vol. 26, no. 2, pp. 111—120, July 1992.
[7] A. LeBlanc, R. Turner, and D. Thalmann, “Rendering hair using pixel blending and shadow buffer”, Journal of Visualization and Computer Animation, vol. 2, pp. 92—97, 1991.
[8] R. Rosenblum, W. Carlson, and E. Tripp, “Simulating the structure and dynamics of human hair: modeling, rendering and animation”, Journal of Visualzation and Computer Animation, vol. 2, pp. 141—148, June 1991.
[9] J. T. Kajiya and T. L. Kay, “Rendering fur with three dimensional textures”, Computer Graphics (Proceedings of SIGGRAPH 89), vol. 23, no. 3, pp. 271—280, July 1989.
[10] J.-P. Lewis, “Algorithms for solid noise synthesis”, Computer Graphics (Proceed-ings of SIGGRAPH 89), vol. 23, no. 3, pp. 263—270, July 1989.
[11] K. Perlin and E. M. Hoffert, “Hypertexture”, Computer Graphics (Proceedings of SIGGRAPH 89), vol. 23, no. 3, pp. 253—262, July 1989.
[12] L.-H. Chen, S. Saeyor, H. Dohi, and M. Ishizuka, “A system of 3d hair style synthesis based on the wisp model”, The Visual Computer, vol. 15, no. 4, pp. 159—170, 1999.
[13] Y. Watanabe and Y. Suenaga, “Drawing human hair using wisp model”, in Proceedings of Computer Graphics International’89, pp. 691—700, Springer Verlag, 1989.
[14] Y. Watanabe and Y. Suenaga, “A trigonal prism-based method for hair image generation”, IEEE Computer Graphics and Applications, vol. 12, no. 1, pp. 47—53, January 1992.
[15] X. D. Yan, Z. Xu, J. Yang, and T. Wang, “The cluster hair model”, Journal of Graphics Models and Image Processing, in press 1999.
[16] A. Bruderlin, “A method to generate wet and broken-up animal fur”, Pacific Graphics ’99, October 1999.
[17] T.-J. Yang, M. Ouhyoung, “Rendering hair with back-lighting”, Proceeding of CAD/Graphics’ 97 Dec. 1997, pp. 291-296.
[18] T. Lokovic, E. Veach “Deep shadow map”, SIGGRAPH 2000 proceeding, pp385-392. July 2000.
[19] J. D. Anderson, Fundamentals of aerodynamics. McGraw-Hill, Inc., 1991.
[20] J. Wejchert and D. Haumann, “Animation aerodynamics”, Computer Graphics, Proceedings of SIGGRAPH 91, vol. 25, no. 4, pp. 19—22, July 1991.
[21] L. Ling, M. Damodaran, and R. K. L. Gay, “Aerodynamic force models for ani-mating cloth motion in air flow,” The Visual Computer, vol. 12, no. 2, pp. 84—104,1996.
[22] E. R. Kaswell, Textile fibers, yarns and fabrics, Reinhold Publishing Corporation , 1953, pp 52.
[23] J. Berney, “Stuart Little: a tale of fur, costumes, performance, and integration: breathing real life into a digital character” SIGGRAPH 2000 Course Note.
[24] 邱桂蓉,張恆勳 髮型原理技術經典 弼上企業有限公司出版 2000
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