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Journal of Inforamtion Science and Engineering, Vol.18 No.1, pp.85-106 (January 2002)

Hierarchical Feature-Based Volume Morphing

Hao-Ren Ke*, Yu-Pao Tsai*+ and Zen-Chun Shih*
 Department of Computer and Information Science
National Chiao Tung University
Hsinchu, 300 Taiwan
+Institute of Information Science
Academia Sinica
TungHai University
Taipei, 115 Taiwan

Morphing techniques have been applied to many fields to create astounding visual effects. In this paper, we present a hierarchical feature-based volume morphing algorithm, which leverages the idea of feature-element hierarchy to significantly improve morphing effects. A new type of feature element, the cylinder field, is also given to facilitate the task of feature specification and correspondence. Additionally, with a slight modification, the proposed algorithm can be applied to volume animation.

Keywords: feature-based volume morphing, feature-element hierarchy, cylinder fields, distance field interpolation (DFI), volume animation

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Received March 10, 2000; revised July 14, 2000; accepted September 1, 2000.
Communicated by Yung-Nien Sun.