| F. Lazarus and A. Verroust, "Three-Dimensional Metamorphosis: A Survey," The Visual Computer, vol. 14, pp. 373-389, 1998. |
....techniques focus on automating the metamorphosis process (which may be effective for restricted class of shapes or models) user control proves to be fundamental to produce convincing animations. 1. 1 Previous work Lazarus has presented an interesting survey of existing metamorphosis techniques [15]. The proposed classification exhibits two major categories according to the underlying shape model : techniques focusing on mesh models and volumetric methods. 1.1.1 Boundary representation approaches Methods that directly work on the boundary representation of polygonal meshes need to solve ....
F. Lazarus and A. Verroust. Three-dimensional metamorphosis : a survey. The Visual Computer, Vol. 14(8/9) : pages 373-- 389, 1998.
....that minimize the user assistance when it is not necessary. Morphing has been investigated for various shapes in two dimensions, including polygons, polylines [5,7,10 13] and freeform curves [9] It has also been investigated for images (see [14] for a survey) and in three dimensions (see [8] for a survey) Morphing requires the solutions to two subproblems. The first problem is to find a correspondence (matching) between features of the two shapes. The second problem is to find trajectories that the corresponding features traverse during the morphing process. These trajectories ....
F. Lazarus and A. Verroust, Three-dimensional metamorphosis: a survey, The Visual Computer, 14 (1998), pp. 373--389.
....techniques that minimize the user assistance when it is not necessary. Morphing has been investigated for various shapes in two dimensions, including polygons, polylines [1 6] and freeform curves [7] It has also been investigated for images (see [8] for a survey) and in three dimensions (see [9] for a survey) Morphing requires the solutions to two subproblems. The rst problem is to nd a correspondence (matching) between features of the two shapes. The second problem is to nd trajectories that the corresponding features traverse during the morphing process. These trajectories ....
Lazarus F, Verroust A. Three-dimensional metamorphosis: a survey. The Visual Computer 1998;14:373}89.
....While some types of metamorphosis are supported, these methods are often very cumbersome. The difficulty arises with the need to manually establish a correspondence between points on the objects. Moreover, a robust method of metamorphosis between objects of arbitrary topology is not known (see [4] for survey) Another problem occurs when applying deformations to boundary representation (BRep) solids or polygonal surfaces. In many cases deformations can lead to self intersections in the object. The application of deformations can also result in unwanted sharp irregularities and or edges. ....
F. Lazarus, A. Verroust, "Three-dimensional metamorphosis: a survey," The Visual Computer, vol. 14, pp. 373-389, 1998.
....or shape interpolation. The technology can be applied to create stunning visual e ects in movies and TV advertisements, for example. Shape blending has been studied since around 1980s, and many algorithms have been published. An excellent review on 3D shape morphing by Lazarus and Verroust [1] notes that there are two major classes of approaches to 3D shape blending; # ############# ####### ##### ############### ##### ######### ############### ######### ######### ############################# ########## ########## ################## ####### ########### # the ....
Lazarus F, Verroust A, Three-dimensional metamorphosis: A survey, The Visual Computer 1998;14:373-389.
....techniques have been used within the medical imaging community to interpolate between parallel slices of data [21, 22, 23] Three dimensional (3 D) metamorphosis is the gradual change of one surface to another. There has been less work on this subject, and it has been reviewed only recently [15]. 3 D morphing can be used for shape transformation (morphing between di#erent objects) animation (interpolating intermediate surfaces between the same object in two di#erent positions) and surface synthesis (editing an existing shape by morphing it with a new one) There is also a close link ....
....important aspect of this design, and the pertinent features are explained in Section 5. The algorithm is tested on a range of surfaces in Section 6 and conclusions are drawn in Section 7. 2 Background 2. 1 3 D volume metamorphosis 3 D morphing algorithms can be split into three major categories [8, 15], according to the underlying representation of the surfaces being morphed. Polygonal representations can be morphed by interpolating the location of the surface points [1, 9, 16] Implicit surfaces (i.e. those defined as an isosurface of a function generated from a set of primitives) can be ....
F. Lazarus and A. Verroust. Three-dimensional metamorphosis: a survey. The Visual Computer, 14:373--389, 1998.
....more realistic transformations. The intermediate 3D morphs also benefit from being independent of the viewing and lighting parameters. Hence, we can create the morph sequence once, and then experiment with various camera angles and lighting conditions for optimal rendering. Lazarus and Verroust [6] present an excellent survey of the various 3D approaches to date. They classify 3D morphing algorithms as volume based approaches or boundarybased approaches depending on the object representation. Volume based approaches are known to work on general topologies but need to handle enormous amounts ....
F. Lazarus and A. Verroust. Three-dimensional metamorphosis: a survey. The Visual Computer, 14(8/9):373--389, 1998.
....through the construction of a map between the source and destination domains. This stage provides additional controls to the user to influence the morph in a broad fashion. The composition of these stages is used for subsequent shape interpolation. 2 Previous Work Lazarus and Verroust [23] give an excellent survey of previous work on the 3D morphing problem. As they note, there are an unlimited number of ways to interpolate from one object to another. Such interpolations may be performed for geometry as well as attributes such as color. Algorithms for morphing are evaluated mainly ....
LAZARUS, F., AND VERROUST, A. Three-dimensional metamorphosis: a survey. The Visual Computer 14 (1998), 373--389.
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F. Lazarus and A. Verroust, "Three-Dimensional Metamorphosis: A Survey," The Visual Computer, vol. 14, pp. 373-389, 1998.
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F. Lazarus and A. Verroust, "Three-Dimensional Metamorphosis: A Survey," The Visual Computer, vol. 14, nos. 8-9, pp. 373-389, 1998.
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Francis Lazarus and Anne Verroust. Three-dimensional metamorphosis: a survey. The Visual Computer, 14(8-9):373--389, 1998.
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