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      Weakly-Supervised 3D Pose Estimation from a Single Image using Multi-View Consistency

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          Abstract

          We present a novel data-driven regularizer for weakly-supervised learning of 3D human pose estimation that eliminates the drift problem that affects existing approaches. We do this by moving the stereo reconstruction problem into the loss of the network itself. This avoids the need to reconstruct 3D data prior to training and unlike previous semi-supervised approaches, avoids the need for a warm-up period of supervised training. The conceptual and implementational simplicity of our approach is fundamental to its appeal. Not only is it straightforward to augment many weakly-supervised approaches with our additional re-projection based loss, but it is obvious how it shapes reconstructions and prevents drift. As such we believe it will be a valuable tool for any researcher working in weakly-supervised 3D reconstruction. Evaluating on Panoptic, the largest multi-camera and markerless dataset available, we obtain an accuracy that is essentially indistinguishable from a strongly-supervised approach making full use of 3D groundtruth in training.

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          Most cited references18

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          Human3.6M: Large Scale Datasets and Predictive Methods for 3D Human Sensing in Natural Environments

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            Pictorial Structures for Object Recognition

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              Densely connected convolutional networks

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                Author and article information

                Journal
                13 September 2019
                Article
                1909.06119
                a9f01117-78a7-48ff-90a9-a6fbce79fd59

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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                Custom metadata
                BMVC
                cs.CV

                Computer vision & Pattern recognition
                Computer vision & Pattern recognition

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