UniGS: マルチモーダルレンダリングのための統合幾何認識ガウススプラッティング
UniGS: Unified Geometry-Aware Gaussian Splatting for Multimodal Rendering
3Dガウススプラッティングを基盤に、RGB画像・深度マップ・表面法線・セマンティックロジットを同時に高精度でレンダリングできる統合的な微分可能フレームワークを提案した論文。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
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著者: Yusen Xie, Zhenmin Huang, Jianhao Jiao, Dimitrios Kanoulas, Jun Ma
分類: cs.CV, cs.RO
原文アブストラクト
In this paper, we propose UniGS, a unified map representation and differentiable framework for high-fidelity multimodal 3D reconstruction based on 3D Gaussian Splatting. Our framework integrates a CUDA-accelerated rasterization pipeline capable of rendering photo-realistic RGB images, geometrically accurate depth maps, consistent surface normals, and semantic logits simultaneously. We redesign the rasterization to render depth via differentiable ray-ellipsoid intersection rather than using Gaussian centers, enabling effective optimization of rotation and scale attribute through analytic depth gradients. Furthermore, we derive the analytic gradient formulation for surface normal rendering, ensuring geometric consistency among reconstructed 3D scenes. To improve computational and storage efficiency, we introduce a learnable attribute that enables differentiable pruning of Gaussians with minimal contribution during training. Quantitative and qualitative experiments demonstrate state-of-the-art reconstruction accuracy across all modalities, validating the efficacy of our geometry-aware paradigm. Source code and multimodal viewer will be available on GitHub.
