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Abstract 3D video objects provide the same functionalities as virtual computer graphics objects but depict the motion and appearance of real world moving objects. They can be viewed interactively from any direction and integrated in complete 3D scenes with other virtual and real world elements. That will be illustrated in details. Morphing can be considered a 3D video technique, morphing used to make an animated scenes between 3D geometry objects. Here each frame has a scene different from the other and by collecting these animated scenes we can get the morphing. In this thesis, we present an algorithm to morph a zero-genus mesh model to a topologically equivalent one based on spherical parameterization, the natural parameterization method for this kind of objects. Our algorithm starts by normalizing each two objects to a unite of cube, as a preprocessing step. Then, the two normalized objects are parameterized onto a common spherical domain. We reposition the points of the objects on the sphere in accordance to the relative areas of their triangles. Repositioning on the sphere prevents point clustering and overlapping during the matching process. The proposed approach is tested to evaluate its performance. The results show that all the models that satisfy the properties can morph successfully. They also show that an accuracy of more than 97% for the mapping between the two objects that make morphing more real. To the best of our knowledge, the proposed morphing approach is the first that uses spherical parameterization in morphing. |