Image metamorphosis using snakes and free-form deformations

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Abstract
This paper presents new solutions to the following three problems in image morphing: feature specification,warp generation, and transi- tion control. To reduce the burden of feature specification,we first adopt a computer vision technique called snakes. We next propose the use of multilevel free-form deformations (MFFD) to achieve 2-continuous and one-to-one warps among feature point pairs. The resulting technique, based on B-spline approximation, is sim- pler and faster than previous warp generation methods. Finally, we simplify the MFFD method to construct 2 -continuous surfaces for

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