Papers › ExtPose: Robust and Coherent Pose Estimation by Extending ViTs

ExtPose: Robust and Coherent Pose Estimation by Extending ViTs

18 Jun 2025International Conference on Machine Learning 2025 6archive 2025-07-28

Rongyu Chen, Li'an Zhuo, Linlin Yang, Qi Wang, Liefeng Bo, Bang Zhang, Angela Yao

Vision Transformers (ViT) are remarkable at 3D pose estimation, yet they still encounter certain challenges. One issue is that the popular ViT architecture for pose estimation is limited to images and lacks temporal information. Another challenge is that the prediction often fails to maintain pixel alignment with the original images. To address these issues, we propose a systematic framework for 3D pose estimation, called ExtPose. ExtPose extends image ViT to the challenging scenario and video setting by taking in additional 2D pose evidence and capturing temporal information in a full attention-based manner. We use 2D human skeleton images to integrate structured 2D pose information. By sharing parameters and attending across modalities and frames, we enhance the consistency between 3D poses and 2D videos without introducing additional parameters. We achieve state-of-the-art (SOTA) performance on multiple human and hand pose estimation benchmarks with substantial improvements to 34.0mm (-23%) on 3DPW and 4.9mm (-18%) on FreiHAND in PA-MPJPE over the other ViT-based methods respectively.

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Tasks

3D Hand Pose Estimation3D Human Pose Estimation3D Pose EstimationHand Pose EstimationPose Estimation

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
3D Hand Pose Estimation FreiHAND ExtPose PA-F@15mm 0.993 #1 of 33 Archive leaderboard report
3D Hand Pose Estimation FreiHAND ExtPose PA-F@5mm 0.823 #1 of 33 Archive leaderboard report
3D Hand Pose Estimation FreiHAND ExtPose PA-MPJPE 4.9 #1 of 33 Archive leaderboard report
3D Hand Pose Estimation FreiHAND ExtPose PA-MPVPE 5.1 #1 of 33 Archive leaderboard report
3D Hand Pose Estimation HInt: Hand Interactions in the wild ExtPose* PCK@0.05 (New Days) All 59.6 #1 of 10 Archive leaderboard report
3D Hand Pose Estimation HInt: Hand Interactions in the wild ExtPose* PCK@0.05 (VISOR) All 61.1 #1 of 10 Archive leaderboard report
3D Hand Pose Estimation HO-3D v2 ExtPose (T=16) AUC_J 0.863 #1 of 24 Archive leaderboard report
3D Hand Pose Estimation HO-3D v2 ExtPose (T=16) AUC_V 0.856 #1 of 24 Archive leaderboard report
3D Hand Pose Estimation HO-3D v2 ExtPose (T=16) F@15mm 0.991 #1 of 24 Archive leaderboard report
3D Hand Pose Estimation HO-3D v2 ExtPose (T=16) F@5mm 0.667 #1 of 24 Archive leaderboard report
3D Hand Pose Estimation HO-3D v2 ExtPose (T=16) PA-MPJPE (mm) 6.9 #1 of 24 Archive leaderboard report
3D Hand Pose Estimation HO-3D v2 ExtPose (T=16) PA-MPVPE 7.3 #1 of 24 Archive leaderboard report
3D Human Pose Estimation 3DPW ExtPose (-a, T=16) MPJPE 54.2 #1 of 119 Archive leaderboard report
3D Human Pose Estimation 3DPW ExtPose (-a, T=16) MPVPE 67.5 #1 of 119 Archive leaderboard report
3D Human Pose Estimation 3DPW ExtPose (-a, T=16) PA-MPJPE 34.0 #1 of 119 Archive leaderboard report

Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.

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