LUDVIG: Learning-free Uplifting of 2D Visual Features to Gaussian Splatting Scenes

ICLR 2025 Conference Submission199 Authors

Keywords: 3D vision, vision foundation models, graph diffusion

TL;DR: A simple and effective technique for uplifting 2D visual features to 3D Gaussian Splatting scenes

Abstract:

We address the problem of extending the capabilities of vision foundation models
such as DINO, SAM, and CLIP, to 3D tasks. Specifically, we introduce a novel
method to uplift 2D image features into 3D Gaussian Splatting scenes. Unlike traditional approaches that rely on minimizing a reconstruction
loss, our method employs a simpler and more efficient feature aggregation
technique, augmented by a graph diffusion mechanism. Graph diffusion
enriches features from a given model, such as CLIP, by leveraging pairwise
similarities that encode 3D geometry or similarities induced by another embedding
like DINOv2. Our approach achieves performance comparable to the state of
the art on multiple downstream tasks while delivering significant speed-ups.
Notably, we obtain competitive segmentation results using generic
DINOv2 features, despite DINOv2 not being trained on millions of
annotated segmentation masks like SAM. When applied to CLIP
features, our method demonstrates strong performance in open-vocabulary,
language-based object detection tasks, highlighting the versatility of our
approach.

Primary Area: foundation or frontier models, including LLMs

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Submission Number: 199