Issue No. 04 - December (1996 vol. 2)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/2945.556502
<p><b>Abstract</b>—This paper describes an image metamorphosis technique to handle scattered feature constraints specified with points, polylines, and splines. Solutions to the following three problems are presented: feature specification, warp generation, and transition control. We demonstrate the use of snakes to reduce the burden of feature specification. Next, we propose the use of multilevel free-form deformations (MFFD) to compute <it>C</it><super>2</super>-continuous and one-to-one mapping functions among the specified features. The resulting technique, based on B-spline approximation, is simpler and faster than previous warp generation methods. Furthermore, it produces smooth image transformations without undesirable ripples and foldovers. Finally, we simplify the MFFD algorithm to derive transition functions to control geometry and color blending. Implementation details are furnished and comparisons among various metamorphosis techniques are presented.</p>
Image metamorphosis, morphing, snakes, multilevel free-form deformation, multilevel B-spline interpolation.
G. Woberg, S. Y. Shin, K. Chwa and S. Lee, "Image Metamorphosis with Scattered Feature Constraints," in IEEE Transactions on Visualization & Computer Graphics, vol. 2, no. , pp. 337-354, 1996.