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arXiv 2602.19348cs.CVcs.AI
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MultiDiffSense: 基于扩散的多模态视觉-触觉图像生成,基于物体形状和接触姿态

MultiDiffSense: Diffusion-Based Multi-Modal Visuo-Tactile Image Generation Conditioned on Object Shape and Contact Pose

Department of Bioengineering, Imperial-X Initiative, Imperial College London(生物工程系、Imperial-X计划、帝国理工学院伦敦分校);CAMS-Oxford Institute, University of Oxford(CAMS-牛津研究所、牛津大学)

Sirine Bhouri, Lan Wei, Jian-Qing Zheng, Dandan Zhang

AI总结:

MultiDiffSense是一种基于扩散的多模态视觉-触觉图像生成模型,通过双条件化实现可控且物理一致的多模态生成,提升了触觉传感数据集的生成效率和跨模态学习能力。

摘要:

获取对齐的视觉-触觉数据集是缓慢且昂贵的,需要专门的硬件和大规模的数据收集。合成生成具有前景,但先前的方法通常是单模态的,限制了跨模态学习。我们提出了MultiDiffSense,一个统一的扩散模型,可以在单一架构内为多种基于视觉的触觉传感器(ViTac、TacTip、ViTacTip)生成图像。我们的方法使用双条件化,基于CAD导出的、姿态对齐的深度图和结构提示,这些提示编码了传感器类型和4自由度接触姿态,从而实现了可控且物理一致的多模态生成。在8个物体(5个已见,3个新)和未见姿态上评估,MultiDiffSense在SSIM上优于Pix2Pix cGAN基线,ViTac提高36.3%,ViTacTip提高134.6%,TacTip提高64.7%。对于下游3自由度姿态估计,混合50%的合成数据和50%的现实数据可将所需现实数据减少一半,同时保持竞争性性能。MultiDiffSense缓解了触觉传感的数据收集瓶颈,并为机器人应用实现了可扩展、可控的多模态数据集生成。

英文摘要:

Acquiring aligned visuo-tactile datasets is slow and costly, requiring specialised hardware and large-scale data collection. Synthetic generation is promising, but prior methods are typically single-modality, limiting cross-modal learning. We present MultiDiffSense, a unified diffusion model that synthesises images for multiple vision-based tactile sensors (ViTac, TacTip, ViTacTip) within a single architecture. Our approach uses dual conditioning on CAD-derived, pose-aligned depth maps and structured prompts that encode sensor type and 4-DoF contact pose, enabling controllable, physically consistent multi-modal synthesis. Evaluating on 8 objects (5 seen, 3 novel) and unseen poses, MultiDiffSense outperforms a Pix2Pix cGAN baseline in SSIM by +36.3% (ViTac), +134.6% (ViTacTip), and +64.7% (TacTip). For downstream 3-DoF pose estimation, mixing 50% synthetic with 50% real halves the required real data while maintaining competitive performance. MultiDiffSense alleviates the data-collection bottleneck in tactile sensing and enables scalable, controllable multi-modal dataset generation for robotic applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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