Gaussian Process Deep Belief Networks: A Smooth Generative Model of Shape with Uncertainty Propagation

Alessandro Di Martino, Erik Bodin, Carl Henrik Ek, Neill Campbell

Research output: Contribution to conferencePaperpeer-review


The shape of an object is an important characteristic for many vision problems such as segmentation, detection and tracking. Being independent of appearance, it is possible to generalize to a large range of objects from only small amounts of data. However, shapes represented as silhouette images are challenging to model due to complicated likelihood functions leading to intractable posteriors. In this paper we present a generative model of shapes which provides a low dimensional latent encoding which importantly resides on a smooth manifold with respect to the silhouette images. The proposed model propagates uncertainty in a principled manner allowing it to learn from small amounts of data and providing predictions with associated uncertainty. We provide experiments that show how our proposed model provides favorable quantitative results compared with the state-of-the-art while simultaneously providing a representation that resides on a low-dimensional interpretable manifold.
Original languageEnglish
Publication statusPublished - 2018
EventACCV2018 (Asian Conference on Computer Vision). - Perth, WA, Australia
Duration: 2 Dec 20186 Dec 2018


ConferenceACCV2018 (Asian Conference on Computer Vision).
CityPerth, WA


  • Shape Models
  • Gaussian Processes
  • Deep Belief Networks
  • Unsupervised Learning


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