BMVC 2004, Kingston, 7th-9th Sept, 2004

Direct Estimation of Non-Rigid Registration
A. Bartoli and A. Zisserman (University of Oxford)

Registering images of a deforming surface is a well-studied problem. Solutions
include computing optic flow or estimating a parameterized motion
model. In the case of optic flow it is necessary to include some regularization.
We propose an approach based on representing the induced transformation
between images using Radial Basis Functions (RBF). The approach can
be viewed as a direct, i.e. intensity-based, method, or equivalently, as a way
of using RBFs as non-linear regularizers on the optic flow field.
The approach is demonstrated on several image sequences of deforming
surfaces. It is shown that the computed registrations are sufficiently accurate
to allow convincing augmentations of the images.
(pdf article)