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arXiv · 2604.24666

Voxel Deformation-Aware Neural Intersection Function

Chih-Chen Kao·Grzegorz Makowski·Shin Fujieda·Takahiro Harada
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Abstract

We extend the Locally-Subdivided Neural Intersection Function (LSNIF) to support parameterized deformable and animated geometry. Our approach introduces a rest-space and deformed-space formulation inspired by meshless rendering, allowing ray samples to be mapped back to a canonical space where a single neural network represents geometry consistently across poses without retraining. To maintain accuracy under deformation-aware training, we incorporate scale-invariant distance regression, uncertainty-weighted multi-task learning, and a hybrid positional-grid encoding. The resulting method preserves the compactness and efficiency of LSNIF while enabling robust neural intersection prediction for dynamic geometry.

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Chih-Chen Kao, Grzegorz Makowski, Shin Fujieda, Takahiro Harada. 2026-04-27. Voxel Deformation-Aware Neural Intersection Function. https://arxiv.org/abs/2604.24666

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