Mastersthesis,

Realtime Character Animation Blending Using Weighted Skeleton Hierarchies

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Lund Institute of Technology, (2000)

Abstract

It is both time-consuming and expensive to create animations, regardless if they are created by hand or by using motion-capture equipment. If the animators could reuse old animations and even blend different animations together, a lot of work would be saved in the process. The main objective of this thesis is to examine a method for blending several animations together in realtime. This will make smooth interactive animations possible while keeping the reuse of existing animations in mind. It will also solve the problem of transitioning between two overlapping animations, for example going from a walking to a running animation without resulting in jerky motion. This thesis presents and analyses a solution using Weighted Skeleton hierarchy Animation (WSA) resulting in limited CPU time and memory waste as well as saving time for the animators. The idea presented is described in detail and implemented. Finally the results are analyzed from a visual / realism viewpoint.

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