Tactile DreamFusion: Exploiting Tactile Sensing for 3D Generation
This addresses the issue of overly smooth surfaces in 3D assets for applications requiring realistic geometric details, representing an incremental advance by integrating tactile data.
The paper tackles the problem of 3D generation methods producing unrealistic geometric details by incorporating tactile sensing as an additional modality, resulting in improved fine geometric textures with accurate alignment between vision and touch in text-to-3D and image-to-3D settings.
3D generation methods have shown visually compelling results powered by diffusion image priors. However, they often fail to produce realistic geometric details, resulting in overly smooth surfaces or geometric details inaccurately baked in albedo maps. To address this, we introduce a new method that incorporates touch as an additional modality to improve the geometric details of generated 3D assets. We design a lightweight 3D texture field to synthesize visual and tactile textures, guided by 2D diffusion model priors on both visual and tactile domains. We condition the visual texture generation on high-resolution tactile normals and guide the patch-based tactile texture refinement with a customized TextureDreambooth. We further present a multi-part generation pipeline that enables us to synthesize different textures across various regions. To our knowledge, we are the first to leverage high-resolution tactile sensing to enhance geometric details for 3D generation tasks. We evaluate our method in both text-to-3D and image-to-3D settings. Our experiments demonstrate that our method provides customized and realistic fine geometric textures while maintaining accurate alignment between two modalities of vision and touch.