CUED Publications database

Using bounded diameter minimum spanning trees to build dense active appearance models

Anderson, R and Stenger, B and Cipolla, R (2014) Using bounded diameter minimum spanning trees to build dense active appearance models. International Journal of Computer Vision, 110. pp. 48-57. ISSN 0920-5691

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Abstract

© 2013 Springer Science+Business Media New York. We present a method for producing dense active appearance models (AAMs), suitable for video-realistic synthesis. To this end we estimate a joint alignment of all training images using a set of pairwise registrations and ensure that these pairwise registrations are only calculated between similar images. This is achieved by defining a graph on the image set whose edge weights correspond to registration errors and computing a bounded diameter minimum spanning tree. Dense optical flow is used to compute pairwise registration and a flow refinement method to align small scale texture is introduced. Further, given the registration of training images, vertices are added to the AAM to minimise the error between the observed flow fields and the flow fields interpolated between the AAM mesh points. We demonstrate a significant improvement in model compactness.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div F > Machine Intelligence
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:05
Last Modified: 15 Aug 2017 01:26
DOI: