Paper: | SU-AM-PS4.11 |
Session: | Image Segmentation, Retrieval and Analysis |
Time: | Sunday, April 9, 10:50 - 12:10 |
Presentation: |
Poster
|
Title: |
Consistent Spherical Parameterisation for Statistical Shape Modelling |
Authors: |
Rhodri Davies; University of Manchester | | |
| Carole Twining; University of Manchester | | |
| Chris Taylor; University of Manchester | | |
Abstract: |
we have described previously a method of automatically constructing statistical models of shape. The method treats model-building as an optimisation problem by re-parameterising each shape so as to minimise the description length of the training set. The approach requires an explicit parameterisation of each shape, which is straightforward in 2D, but non-trivial in 3D. It is necessary to provide some parameterisation of the training set, to initialise the optimisation. An inappropriate initial parameterisation can cause the optimisation to converge at a slower rate or stop it from converging to a satisfactory solution. In this paper we describe a method of producing a consistent parameterisation for a given set of surfaces. The consistent parameterisations were used to initialise the model-building algorithm and produced results that were significantly better than alternative approaches. |