TanGO: Training-Free 3D Editing via Tangent-Space Guidance and Optimization
Merged summary
TL;DR - TanGO is a training-free framework for editing 3D shapes produced by flow-matching generative models, steering individual tokens in the tangent space of the generative dynamics to reduce editing artifacts. It matters because it improves controllable 3D editing without retraining, addressing failures common to token-sharing structured 3D models.
- Targets flow-matching 3D generators (e.g., VecSet) whose tokens share global context, which causes conventional training-free editing to collapse preserved regions or leave transformations incomplete.
- Introduces adaptive per-token steering via a one-step optimal control rule operating in the tangent space of generative dynamics.
- Sets each token's control strength using a von Mises–Fisher-inspired directional discrepancy between source and target velocity fields.
- Reports state-of-the-art results, reducing structural artifacts versus existing 3D editing baselines; code released at the linked GitHub repo.
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TanGO: Training-Free 3D Editing via Tangent-Space Guidance and Optimization
TL;DR - TanGO is a training-free framework for editing 3D shapes produced by flow-matching generative models, steering individual tokens in the tangent space of the generative dynamics to reduce editing artifacts. It matters because it improves controllable 3D editing without retraining, addressing failures common to token-sharing structured 3D models.
- Targets flow-matching 3D generators (e.g., VecSet) whose tokens share global context, which causes conventional training-free editing to collapse preserved regions or leave transformations incomplete.
- Introduces adaptive per-token steering via a one-step optimal control rule operating in the tangent space of generative dynamics.
- Sets each token's control strength using a von Mises–Fisher-inspired directional discrepancy between source and target velocity fields.
- Reports state-of-the-art results, reducing structural artifacts versus existing 3D editing baselines; code released at the linked GitHub repo.