Polymorph: morphing among multiple images
Seungyong Lee, George Wolberg, Sung Yong Shin · IEEE Computer Graphics and Applications · 1998
Polymorph extends conventional morphing to derive morphed images from more than two images at once, effectively integrating geometric manipulations and color blending. We present a general framework for polymorphing by extending the traditional image morphing paradigm that applies to two images. The authors formulate each input image as a vertex of an (n-1)-dimensional simplex, where n equals the number of input images. They look at the mathematical framework for polymorph, followed by warp function generation and propagation, blending function generation, and the implemented polymorph system. Metamorphosis examples demonstrate the use of polymorph for image composition.