Feature-Based Volume Metamorphosis
Apostolos Lerios, Chase
D. Garfinkle, and Marc Levoy.
Proceedings of SIGGRAPH
'95 (Los Angeles, CA, August 6-11, 1995). In Computer Graphics
Proceedings, Annual Conference Series, 1995, ACM SIGGRAPH, pp. 449-456.
Image metamorphosis, or image morphing, is a popular
technique for creating a smooth transition between two images. For
synthetic images, transforming and rendering the underlying
three-dimensional (3D) models has a number of advantages over morphing
between two pre-rendered images. In this paper we consider 3D
metamorphosis applied to volume-based representations of objects. We
discuss the issues which arise in volume morphing and present a method
for creating morphs.
Our morphing method has two components: first a warping of the two
input volumes, then a blending of the resulting warped volumes. The
warping component, an extension of Beier and Neely's image warping
technique to 3D, is feature-based and allows fine user control, thus
ensuring realistic looking intermediate objects. In addition, our
warping method is amenable to an efficient approximation which gives a
50 times speedup and is computable to arbitrary accuracy. Also, our
technique corrects the ghosting problem present in Beier and Neely's
technique. The second component of the morphing process, blending, is
also under user control; this guarantees smooth transitions in the
T. Beier and S. Neely. Feature-Based Image Metamorphosis. In
Computer Graphics, 26(2): 35-42, New York, NY, July, 1992.
ACM SIGGRAPH. Proceedings of SIGGRAPH '92.
I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling;
I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism.
Volume morphing, warping, rendering; sculpting; shape interpolation,
transformation, blending; computer animation.
- PDF of full paper with low-res color figures (675 KB)
- Text of paper, including figures 1 through 4.
- Figure 5 (Color plate 1):
- Figure 6 (Color plate 2):
- Figure 7 (Color plate 3):
- Video excerpts.
Last update: 15 October 1995 by Apostolos "Toli" Lerios