Papers › Neural Body Fitting: Unifying Deep Learning and Model-Based Human Pose and Shape Estimation

Neural Body Fitting: Unifying Deep Learning and Model-Based Human Pose and Shape Estimation

17 Aug 2018arXiv:1808.05942archive 2025-07-28

Mohamed Omran, Christoph Lassner, Gerard Pons-Moll, Peter V. Gehler, Bernt Schiele

Direct prediction of 3D body pose and shape remains a challenge even for highly parameterized deep learning models. Mapping from the 2D image space to the prediction space is difficult: perspective ambiguities make the loss function noisy and training data is scarce. In this paper, we propose a novel approach (Neural Body Fitting (NBF)). It integrates a statistical body model within a CNN, leveraging reliable bottom-up semantic body part segmentation and robust top-down body model constraints. NBF is fully differentiable and can be trained using 2D and 3D annotations. In detailed experiments, we analyze how the components of our model affect performance, especially the use of part segmentations as an explicit intermediate representation, and present a robust, efficiently trainable framework for 3D human pose estimation from 2D images with competitive results on standard benchmarks. Code will be made available at http://github.com/mohomran/neural_body_fitting

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Tasks

3D Human Pose EstimationMonocular 3D Human Pose EstimationPose Estimation

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
3D Human Pose Estimation HumanEva-I Ours Mean Reconstruction Error (mm) 64 #28 of 31 Archive leaderboard report
Monocular 3D Human Pose Estimation Human3.6M Neural Body Fitting (NBF) Frames Needed 1 #42 of 52 Archive leaderboard report
Monocular 3D Human Pose Estimation Human3.6M Neural Body Fitting (NBF) Need Ground Truth 2D Pose No #42 of 52 Archive leaderboard report
Monocular 3D Human Pose Estimation Human3.6M Neural Body Fitting (NBF) Use Video Sequence No #42 of 52 Archive leaderboard report
Monocular 3D Human Pose Estimation Human3.6M Neural Body Fitting (NBF) PA-MPJPE 59.9 #51 of 52 Archive leaderboard report

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