Animating facial images with drawings
Author(s)
Advisor
Özgüç, BülentDate
1996Publisher
Bilkent University
Language
English
Type
ThesisItem Usage Stats
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Abstract
The work presented here describes the power of 2D animation with texture
mai^ping controlled by line drawings. Animation is specifically intended for
facial animation and not restricted by the human face.
We initially have a sequence of facial images which are taken from a video
sequence of the same face and an image of another face to be animated. The
aim is to animate the face image with the same expressions as those of the
given video sequence.
To realize the animation, a set of frames are taken from a video sequence.
Key features of the first frame are I’otoscoped and the other frames are automatically
rotoscoped using the first frame. Similarly, the corresponding features of
the image which will be animated are rotoscoped. The key features of the first
frame of the sequence and the image to be animated are mapped and using
cross-synthesis procedure, other drawings for the given image are produced.
Using these animated line drawings and the original image, the corresponding
frame sequence is produced by image warping. The resulting sequence has the
same expressions as those of the video sequence.
This work encourages the reuse of animated motion by gathering facial motion
sequences into a database. Furthermore, by using motion sequences of
a human face, non-human characters can be animated realistically or complex
characters can be animated by the help of motion sequences of simpler
characters.
Keywords
facial animationfacial expression
snakes
active contour models
multigrid relaxation
multilevel B-Spline interpolation