3D Human Shape and Pose from a Single Depth Image with Deep Dense Correspondence Enabled Model Fitting

International audienceWe propose a two-stage hybrid method, with no initialization, for 3D human shape and pose estimation from a single depth image, combining the benefits of deep learning and optimization.First, a convolutional neural networkpredicts pixel-wise dense semantic correspondences to a template geometry, in the form of body part segmentation labels and normalized canonical geometry vertex coordinates. Using these two outputs, pixel-to-vertex correspondences are computed in a six-dimensional embedding of the template geometry through nearest neighbor. Second, a parametric shape model (SMPL) is fitted to the depth data by minimizingvertex distances to the input.Extensive evaluation on both real and synthetic humanshape in motiondatasets shows that our methodyields quantitatively and qualitatively satisfactory results and state-of-the-art reconstruction errors