Semi-supervised Hierarchical Models for 3D Human Pose Reconstruction

Recent research in visual inference from monocular images has shown that discriminatively trained image-based predictors can provide fast, automatic qualitative 3D reconstructions of human body pose or scene structure in realworld environments. However, the stability of existing image representations tends to be perturbed by deformations and misalignments in the training set, which, in turn, degrade the quality of learning and generalization. In this paper we advocate the semi-supervised learning of hierarchical image descriptions in order to better tolerate variability at multiple levels of detail. We combine multilevel encodings with improved stability to geometric transformations, with metric learning and semi-supervised manifold regularization methods in order to further profile them for taskinvariance ? resistance to background clutter and within the same human pose class differences. We quantitatively analyze the effectiveness of both descriptors and learning methods and show th...

• Type: Conference
• Year: 2007
• Where: CVPR
• Authors: Atul Kanaujia, Cristian Sminchisescu, Dimitris N. Metaxas
• Keywords: Computer Vision, CVPR 2007, Human Body Pose, Human Pose Class, Human Pose Estimates, Semi-supervised Learning, Semi-supervised Manifold Regularization