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Abstract: Morphing means to transform shape of objects from one form to another, which is shortened form of metamorphosis. The metamorphosis generates a sequence of in between images in which an image gradually changes into another image over time. The approach of morphing makes the animator high-level control of the visual effects. Morphing algorithms continue to advance and programs can automatically morph images that correspond closely enough with relatively little instruction from the user. This paper involves morphing techniques which can be classified into two categories i.e. mesh based and feature based methods in terms of their ways for specifying features. Comparison with the existing methods is made along with the advantages and disadvantages. Along with these techniques this paper involves the cross dissolving technique which is a common transition between the cuts.
Keywords: 2D-3D Techniques, Cross Dissolving, Featured based morphing, Mesh warping, Single line transformation, Specification of transformation
I. INTRODUCTION
Morphing, or metamorphosis, aims to generate a smooth shape sequence which transforms a source object shape into a target object shape. This technique has become increasingly important in computer graphics for animation and entertainment, and is commonly employed by the special effects industry. Many morphing techniques have been developed for the 2D case. Morphing is a technique in which we smoothly change one object into another. To accomplish this change is to have the set of vertices that define one object change their locations (& other attributes) to those of the other objec ts
The idea is to produce a visible metamorphosis effect as intermediate images are being displayed. Image morphing was popular in TV, movies and advertisements in the 1980s and 1990s. Morphing can be seen as a modified version of piecewise warping, in which the user specifies control points in both the initial and final images. An important aspect of morphing is that the warp is computed incrementally, one small step at a time, in combination with a dissolve effect from the initial image to the final one. An alternative method for image morphing, fields based morphing, originally proposed by Beier and Neely [bn92], does not use meshes. The Morphing can be seen as a modified version of piecewise warping, in which the user specifies control points in both the initial...