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研究生:王聖川
研究生(外文):Sheng-Chuan Wang
論文名稱:氣象雷達資料視算系統
論文名稱(外文):Visualization System for Weather Radar Data
指導教授:翁世光
指導教授(外文):Shyh-Kuang Ueng
學位類別:碩士
校院名稱:國立臺灣海洋大學
系所名稱:資訊工程學系
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:2005
畢業學年度:93
語文別:中文
論文頁數:58
中文關鍵詞:都卜勒雷達體積成像法多層次精細度視野相依三維材質貼圖
外文關鍵詞:Doppler RadarVolume RenderingLevel of DetailsView Dependent3D Texture Mapping
相關次數:
  • 被引用被引用:0
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摘要

  都卜勒雷達是氣象學中天氣預測技術的利器,氣象學家藉由分析氣象資料可以得知即時的天氣資訊,如降雨機率、颱風之形成、陣風強度等等。但氣象學家無法單從數據資料就做正確地分析判斷,所以氣象雷達資料的視算工作顯得格外重要。
  本論文提出一個低成本、擁有高精確度、具高繪圖效能之氣象雷達資料視算系統。系統使用體積成像法來對氣象資料做視算,我們以濺射塗色法繪製高精確度與高畫質的影像,並且將梯度資訊與擴散度資訊加以考慮進來,來更近一步地增進影像畫質;將視野相依之多精細度視算法運用到濺射塗色法上,使其繪圖效能提升;使用三維材質貼圖體積成像法配合像素處理程式來達到即時繪圖效能的目標,並繪製不錯的影像結果。
Abstract

Doppler radars are useful facilities for sampling meteorological data. By analyzing radar data, meteorologists can get real-time information for weather forecasting, for example, the precipitation density, the formation of hurricane, the wind velocity magnitude, etc. However, in appearance, the raw data do not supply the information directly. Therefore, a visualization system which explores the internal features of radar data is extremely important.
In this thesis, a visualization system for analyzing and displaying radar data based on volume rendering techniques is presented. The system uses splatting volume rendering methods for post-processing radar data to generate images with high accuracy and high quality. The gradient and diffusion effects are taken into account in the volume rendering to enhance image quality. A view-dependent LoD visualization technique is also utilized in the splatting algorithm to increase the rendering performance. Furthermore, a three dimensional texture mapping method assisted by graphics hardware is employed in the system to achieve real-time rendering.
1 緒論……………………………………………1
1.1 前言……………………………………………1
1.2 相關研究………………………………………1
1.3 研究方法簡介與論文結構……………………3
2 背景知識介紹…………………………………5
2.1 氣象雷達系統簡介……………………………5
2.2 雷達資料來源…………………………………6
2.3 大氣雲層結構…………………………………7
2.4 體積成像法……………………………………8
3 雷達資料視算系統-前處理模組……………11
3.1 建構結構化網格資料…………………………12
3.2 建構多層次精細度結構化網格資料…………13
3.3 建立採光雲層散射亮度表……………………15
3.4 亮度表計算方法………………………………16
4 雷達資料視算系統-顯示模組………………19
4.1 濺射塗色法……………………………………19
4.1.1 核心函樹與足跡函數…………………………20
4.1.2 Billboard技巧應用…………………………21
4.1.3 應用能量之梯度資訊…………………………22
4.1.4 應用能量之擴散度資訊………………………23
4.2 擬真採光雲圖…………………………………25
5 繪圖加速技術…………………………………28
5.1 視野相依之多精細度視算法…………………28
5.2 三維材質貼圖體積成像法……………………30
5.2.1 硬體加速繪製雲圖……………………………31
6 實作結果與效能分析…………………………34
6.1 不同解析度濺射塗色法之視算結果分析……35
6.2 梯度與擴散度之影響…………………………38
6.3 視野相依之視算結果…………………………40
6.4 三維材質貼圖體積成像法之結果分析………43
7 結果與未來發展………………………………51
7.1 結論……………………………………………51
7.2 未來發展………………………………………51
參考文獻……………………………………………………53
參考文獻

[1] C. Donald Ahrens. Meteorology Today: An Introduction to Weather, Climate, and the Environment, 7th Edition. Thomson/Brooks/Cole, 2003.
[2] James F. Blinn. Light Reflection Functions for Simulation of Clouds and Dusty Surfaces. Computer Graphics (In Proceedings of SIGGRAPH’82), 16(3):21-29, 1982.
[3] G. A. Clift. Use of Radar In Meteorology. Secretariat of the World Meteorological Organization, 1985.
[4] Wei Chen, Liu Ren, Matthias Zwicker, and Hanspeter Pfister. Hardware-Accelerated Adaptive EWA Volume Splatting. In Proceedings of IEEE Visualization 2004, pages 67-74, 2004.
[5] Robert A. Drebin, Loren Carpenter, Pat Hanrahan. Volume Rendering. Computer Graphics (In Proceedings of SIGGRAPH’88), 22(4): 65-74, 1988.
[6] Yoshinori Dobashi, Kazufumi Kaneda, Hideo Yamashita, Tsuyishi Okita, and Tomoyuki Nishita. A Simple, Efficient Method for Realistic Animation of Clouds. In Proceedings of SIGGRAPH 2000, pages 19-28, 2000.
[7] Suzana Djurcilov and Alex Pang. Visualizing Gridded Datasets with Large Number of Missing Values. In Proceedings of IEEE Visualization’99, pages 405-408, 1999.
[8] Katja Friedrich and Martin Hagen. On the Use of Advanced Doppler Radar Techniques to Determine Horizontal Wind Fields for Operational Weather Surveillance. Meteorol. Appl., 11:155-171, 2004.
[9] Andrew S. Glassner. An Introduction to Ray Tracing. Harcourt Brace, 1989.

[10] Allen Van Gelder and Kwansik Kim. Direct Volume Rendering with Shading via Three-Dimensional Textures. In Proceedings of the IEEE Symposium on Volume Visualization, pages 23-30, 1996.
[11] Thomas Gerstner, Dirk Meetschen, Susanne Crewell, Michael Griebel, and Clemens Simmer. A Case Study on Multiresolution Visualization of Local Rainfall from Weather Radar Measurements. In Proceedings of IEEE Visualization’02, pages 533-536, 2002.
[12] Antonio Garcia and Han-Wei Shen. An Interleaved Parallel Volume Renderer with PC-Clusters. In Proceedings of the Fourth Eurographics Workshop on Parallel Graphics and Visualization, pages 51-59, 2002.
[13] William L. Hibbard. 4-D Display of Meteorological Data. In Proceedings of the 1986 Workshop on Interactive 3D Graphics, pages 23-36, 1986.
[14] Elke Hergenröther, Antonio Bleile, Don Middleton, and Andrzej Trembilski. The Abalone Interpolation: A Visual Interpolation Procedure for the Calculation of Cloud Movement. In Proceedings of the 15th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI’02), pages 381-387, 2002.
[15] Mark J. Harris, William V. Baxter III, Thorsten Scheuermann, and Anselmo Lastra. Simulation of Cloud Dynamics on Graphics Hardware. In Proceedings of the ACM SIGGRAPH/Eurographics Conference on Graphics Hardware, pages 92-101, 2003.
[16] Mark J. Harris and Anselmo Lastra. Real-Time Cloud Rendering. Computer Graphics Forum (In Proceedings of Eurographics 2001), 20(3):76-84, 2001.
[17] Curtis N. James, Stacy R. Brodzik, Harry Edmon, Robert A. Houze, Jr. and Sandra E. Yuter. Radar Data Processing and Visualization over Complex Terrain. AMS Weather and Forecasting, 15(3): 327-338, 2000.

[18] Justin Jang, William Ribarsky, Christopher D. Shaw, and Nickolas Faust. View-Dependent Multiresolution Splatting of Non-Uniform Data. In Proceedings of Eurographics-IEEE Visualization Symposium 2002, pages 125-132, 2002.
[19] James T. Kajiya and Brian P. Von Herzen. Ray Tracing Volume Density. Computer Graphics (In Proceedings of SIGGRAPH’84), 18(3):165-174, 1984.
[20] J. Krüger and R. Westermann. Acceleration Techniques for GPU-Based Volume Rendering. In Proceedings of IEEE Visualization 2003, pages 287-292, 2003.
[21] Eric LaMar, Bernd Hamann, and Kenneth I. Joy. Multiresolution Techniques for Interactive Texture-Based Volume Visualization. In Proceedings of IEEE Visualization’99, pages 355-361, 1999.
[22] David Laur and Pat Hanrahan. Hierarchical Splatting: A Progressive Refinement Algorithm for Volume Rendering. Computer Graphics (In Proceedings of SIGGRAPH’91), 25(4):285-288, 1991.
[23] Aaron E. Lefohn, Joe M. Kniss, Charles D. Hansen and Ross T. Whitaker. Interactive Deformation and Visualization of Level Set Surfaces Using Graphics Hardware. In Proceedings of IEEE Visualization 2003, pages 75-82, 2003.
[24] Erik Lindholm, Mark J. Kilgard, and Henry Moreton. A User-Programmable Vertex Engine. In Proceedings of SIGGRAPH 2001, pages 149-158, 2001.
[25] L. Li and W. Schmid. Nowcasting of Motion and Growth of Precipitation with Radar over a Complex Orography. AMS Journal of Applied Meteorology, 34(6): 1286-1300, 1995.
[26] Xinyue Li and Han-Wei Shen. Time-Critical Multiresolution Volume Rendering Using 3D Texture Mapping Hardware. In Proceedings of IEEE Symposium on Volume Visualization, pages 29-36, 2002.


[27] P. W. Li, W. K. Wong, and Edwin S. T. Lai. Short-Range Forecast of Heavy Rain Based on Radar Echo Analysis. In Proceedings of the 3rd International Scientific Conference on the Global Energy and Water Cycle, Beijing, 1999.
[28] Nelson Max, Roger Crawfis, and Barry Becker. Applications of Texture Mapping to Volume and Flow Visualization. In Proceedings of Graphicon’95, pages 108-113, 1995.
[29] Nelson Max, Roger Crawfis and Dean Williams. Visualizing Wind Velocities by Advecting Cloud Textures. In Proceedings of IEEE Visualization’92, pages 179-184, 1992.
[30] Michael Meißner, Ulrich Hoffmann, and Wolfgang Straßer. Enabling Classification and Shading for 3D Texture Mapping Based Volume Rendering Using OpenGL and Extensions. In Proceedings of IEEE Visualization’99, pages 207-214, 1999.
[31] Paula T. McCaslin, Philip A. McDonald, and Edward J. Szoke. 3D Visualization Development at NOAA Forecast Systems Laboratory. ACM SIGGRAPH Computer Graphics, 34(1): 41-44, 2000.
[32] Ryo Miyazaki, Satoru Yoshida, Yoshinori Dobashi, and Tomo yuki Nishita. A Method for Modeling Clouds Based on Atmospheric Fluid Dynamics. In Proceedings of the 9th Pacific Conference on Computer Graphics and Applications (PG’01), pages 363-372, 2001.
[33] Petr Novák. Processing of Doppler Weather Radar Winds. In Proceedings of WDS’99, pages 22-25, 1999.
[34] Tomoyuki Nishita, Yoshinori Dobashi, and Eihachiro Nakamae. Display of Clouds Taking into Account Multiple Anisotropic Scattering and Sky Light. In Proceedings of SIGGRAPH’96, pages 379-386, 1996.

[35] Tomoyuki Nishita, Takao Sirai, Katsumi Tadamura, and Eihachiro Nakamae. Display of the Earth Taking into Account Atmospheric Scattering. In Proceedings of SIGGRAPH’93, pages 175-182, 1993.
[36] William T. Peeves. Particle Systems─A Technique for Modeling a Class of Fuzzy Objects. ACM Transactions on Graphics, 2(2):91-108, 1983.
[37] T. V. Papathomas, J. A. Schiavone, and B. Julesz. Applications of Computer Graphics to the Visualization of Meteorological Data. Computer Graphics (In Proceedings of SIGGRAPH’88), 22(4): 327-334, 1988.
[38] Jos Stam. Stable Fluids. In Proceedings of SIGGRAPH’99, pages 121-128, 1999.
[39] Jürgen P. Schulze and Ulrich Lang. The Parallelization of the Perspective Shear-Warp Volume Rendering Algorithm. In Proceedings of the Fourth Eurographics Workshop on Parallel Graphics and Visualization, pages 61-69, 2002.
[40] Joshua Schpok, Joseph Simons, David S. Ebert, and Charles Hansen. A Real-Time Cloud Modeling, Rendering, and Animation System. In Proceedings of the 2003 ACM SIGGRAPH/Eurographics Symposium on Computer Animation, pages 160-166, 2003.
[41] Simon Stegmaier and Thomas Ertl. A Graphics Hardware-Based Vortex Detection and Visualization System. In Proceedings of IEEE Visualization 2004, pages 195-202, 2004.
[42] Shyh-Kuang Ueng, Yan-Jen Su, and Chi-Tang Chang. LoD Volume Rendering of FEA Data. In Proceedings of IEEE Visualization 2004, pages 417-424, 2004.
[43] Shyh-Kuang Ueng, Kris Sikorski, and Kwan-Liu Ma. Out-of-Core Streamline Visualization on Large Unstructured Meshes. IEEE Transactions on Visualization and Computer Graphcis, 3(4):370-380, 1997.

[44] Lee Westover. Interactive Volume Rendering. In Proceedings of the 1989 Chapel Hill Workshop on Volume Visualization, pages 9-16, 1989.
[45] Lee Westover. Foorprint Evaluation for Volume Rendering. Computer Graphics (In Proceedings of SIGGRAPH’90), 24(4): 167-176, 1990.
[46] Rüdiger Westermann and Thomas Ertl. Efficiently Using Graphics Hardware in Volume Rendering Applications. In Proceedings of SIGGRAPH’98, pages 169-177, 1998.
[47] Richard S. Wright, Jr. and Benjamin Lipchak. OpenGL® Superbible, 3rd edition. SAMS, 2004.
[48] Manfred Weiler, Rüdiger Westermann, Chuck Hansen, Kurt Zimmermann and Thomas Ertl. Level-of-Detail Volume Rendering via 3D Textures. In Proceedings of IEEE Symposium on Volume Visualization, pages 7-13, 2000.
[49] Matthias Zwicker, Hanspeter Pfister, Jeroen van Baar, and Markus Gross. EWA Volume Splatting. In Proceedings of IEEE Visualization’2001, pages 29-36, 2001.
[50] Iwan Holleman. Doppler Weather Radar. http://www.knmi.nl/~holleman/radardoppler.html.
[51] National Weather Service, NOAA. National Weather Service Radar Image, Dennis R. Cain and Paul Kirkwood, editor, October, 2004. http://weather.noaa.gov/radar/radinfo/radinfo.html.
[52] 交通部中央氣象局. 交通部中央氣象局官方網站. http://www.cwb.gov.tw.
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