Demo-Pose: Depth-Monocular Modality Fusion For Object Pose Estimation
Organizations: Samsung R&D Institute, Bangalore · Samsung Electronics Suwon, Republic of Korea
Abstract
Object pose estimation is a fundamental task in 3D vision with applications in robotics, AR/VR, and scene understanding. We address the challenge of category-level 9-DoF pose estimation (6D pose + 3Dsize) from RGB-D input, without relying on CAD models during inference. Existing depth-only methods achieve strong results but ignore semantic cues from RGB, while many RGB-D fusion models underperform due to suboptimal cross-modal fusion that fails to align semantic RGB cues with 3D geometric representations. We propose DeMo-Pose, a hybrid architecture that fuses monocular semantic features with depth-based graph convolutional representations via a novel multimodal fusion strategy. To further improve geometric reasoning, we introduce a novel Mesh-Point Loss (MPL) that leverages mesh structure during training without adding inference overhead. Our approach achieves real-time inference and significantly improves over state-of-the-art methods across object categories, outperforming the strong GPV-Pose baseline by 3.2% on 3D IoU and 11.1% on pose accuracy on the REAL275 benchmark. The results highlight the effectiveness of depth-RGB fusion and geometry-aware learning, enabling robust category-level 3D pose estimation for real-world applications.
Figures & tables
| Method | Setting | 3D 25 | 3D 50 | 3D 75 | 5°2cm | 5°5cm | 10°5cm | 10°10cm | FPS | |
|---|---|---|---|---|---|---|---|---|---|---|
| NOCS [ 24 ] | CVPR’19 | RGB-D | 84.9 | 80.5 | 30.1 | 7.2 | 10.0 | 25.2 | 26.7 | 5 |
| CASS [ 1 ] | CVPR’20 | RGB-D | 84.2 | 77.7 | - | - | 23.5 | 58.0 | 58.3 | - |
| SPD [ 23 ] | ECCV’20 | RGB-D | 83.4 | 77.3 | 53.2 | 19.3 | 21.4 | 54.1 | - | 4 |
| CR-Net [ 25 ] | IROS’21 | RGB-D | - | 79.3 | 55.9 | 27.8 | 34.3 | 60.8 | - | - |
| SGPA [ 2 ] | ICCV’21 | RGB-D | - | 80.1 | 61.9 | 35.9 | 39.6 | 70.7 | - | - |
| DualPoseNet [ 16 ] | ICCV’21 | RGB-D | - | 79.8 | 62.2 | 29.3 | 35.9 | 66.8 | - | 2 |
| Method | 3D 75 | 5°2cm | 5°5cm | 10°5cm |
|---|---|---|---|---|
| DeMo-Pose w/o MPL | 64.1 | 33.6 | 46.3 | 78.8 |
| DeMo-Pose + MPL | 66.8 | 34.7 | 47.7 | 79.3 |
| Fusion Methods | 3D 50 | 3D 75 | 5°5cm | 10°5cm | FPS |
|---|---|---|---|---|---|
| Concatenation | 83.0 | 66.8 | 47.7 | 79.3 | 17.86 |
| MLP + Skip | 82.8 | 66.2 | 46.0 | 77.6 | 17.41 |
| Attention + Skip | 82.9 | 66.9 | 46.8 | 77.9 | 17.36 |
Object Pose Estimation
Object pose estimation recovers an object's 3D position and orientation from images, depth, point clouds, or contact sensing.
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