| 研究生: |
蔣正彥 Chiang, Cheng-Yen |
|---|---|
| 論文名稱: |
立體醫學影像的品質提昇與應用 Quality Improvement and Application of 3D Medical Images |
| 指導教授: |
陳立祥
Chen, Lih-Shyang |
| 學位類別: |
碩士 Master |
| 系所名稱: |
電機資訊學院 - 電腦與通信工程研究所 Institute of Computer & Communication Engineering |
| 論文出版年: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 95 |
| 中文關鍵詞: | 立體醫學影像品質 、立體影像雜訊 |
| 外文關鍵詞: | The quality of 3D medical object surface, The defects of 3D medical object surface |
| 相關次數: | 點閱:56 下載:4 |
| 分享至: |
| 查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
立體醫學影像表面的產生,是指由一系列二維的醫學影像產生三維的立體醫學影像並呈現在電腦螢幕上,而使用者亦能透過電腦對此立體醫學影像進行相關操作。
重建後的立體醫學影像,其影像品質會受到影像切割以及三維重建技術的影響。本項研究針對立體影像雜訊進行分析,並提出一系列提昇影像品質的演算法,在正確與快速的前提下建立出影像品質較佳的立體醫學影像。
除此之外,以此三維重建演算法重建的立體醫學影像,亦結合體素圖像與多邊形表面圖像之優點,前者完整保有三維物件內部資訊;後者在呈現上則提供較佳之影像品質。故於應用上,使用者在對此立體醫學影像進行相關操作時有更大的彈性與更快的反應時間。
The generation of the surface of 3D medical images indicates that a series of 2D medical images produces 3D objects presented on the screen of a computer and users can manipulate the 3D objects through the computer as well.
The quality of rebuilt 3D medical objects will be affected by the 2D image segmentation and 3D reconstruction methods. In order to produce better quality of the 3D medical images under the premise of accuracy and efficiency, this paper analyses the defects on the surface of 3D medical objects and presents a series of algorithms which is to improve the quality of the 3D medical objects.
Moreover, we also integrate the merits of voxel based images and surface based images into the medical images rebuilt by 3D reconstruction algorithm. The former ones hold entire information inside the 3D object, and the latter ones provide better image quality. In the aspect of application, this reconstruction method provides faster response time and more extensions when users manipulate the 3D objects.
[1]: Barsky, B. 1988. Computer graphics and geometric modeling using beta-splines. Springer-verlag, New York.
[2]: Bright, S., and Laflin, S. 1986. Shading of solid voxel models. Computer Graphics Forum 5, 2, 131-138.
[3]: Chen, L. S., and Sontag, M. 1989. Representation, display, and manipulation of 3D digital scenes. Computer Vision, Graphics, and Image Processing 48, 2, 190-216.
[4]: Chen, L. S., Herman, G. T., Reynolds, R. A., and Udupa, J. K. 1985. Surface shading in the Cuberille environment. IEEE Computer Graphics and Applications 5, 12, 33-43.
[5]: Cohen, D., Kaufman, A., Bakalash, R., and Bergman, S. 1990. Real-time discrete shading. The Visual Computer 6, 1, 16-27.
[6]: Gibson, S. F. F. 1998. Using distance maps for accurate surface reconstruction in sampled volumes. In IEEE Symposium on Volume Visualization, 23–30.
[7]: Gordon, D., and Reynolds, R. A. 1985. Image space shading of 3-dimensional objects. Computer Graphics and Image Processing 29, 3. 361-376.
[8]: Hoehne, K. H., and Bernstein, R. 1986. Shading 3D-images from CT using grey-level gradients. IEEE Transactions on Medical Imaging 5, 1, 45-57.
[9]: Höhne, K. H., Bomans, M., Pommert, A., Riemer, M., Schiers, C., Tiede, U., and Wiebecke, G. 1990. 3D visualization of tomographic volume data using the generalized voxel model. The Visual Computer 6, 1, 28-36.
[10]: Kaufman, A. 1993. Volume graphics. IEEE Computer 26, 7, 51-64.
[11]: Kobbelt, L. P., Botsch, M., Schwanecke, U., and Seidel, H. P. 2001. Feature sensitive surface extraction from volume data. In Proceedings of ACM SIGGRAPH 2001, 57–66.
[12]: Losasso, T. F., Schaefer, S., and Warren, J. 2002. Dual contouring of hermite data. ACM Transactions on Graphics 21, 3, 339–346.
[13]: Lorensen, W. E., Cline, H. E., “Marching cubes: A high resolution 3D surface construction algorithm,” ACM SIGGRAPH Computer Graphics, v.21 n.4, p.163-169, July 1987
[14]: Magnusson, M., Lenz, R., and Danielsson, P. -E. 1988. Evaluation of methods for shaded display of CT volumes. Proceedings 9th International Conference Pattern Recognition 2, 1287-1294.
[15]: Ratliff, F. 1972. Contour and contrast. Scientific American 226, 6, 91-101.
[16]: ScanView. 2004. http://graphics.stanford.edu/software/s-canview/.
[17]: Tam, Y. –W., and Davis, W. A. 1988. Display of 3D medical images. Proceedings on Graphics Interface, 78-86.
[18]: Yagel, R., Cohen, D., and Kaufman, A. 1992. Normal estimation in 3D discrete space. The visual computer 8, 278-291.