Author

Yuanxiang Ni

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#artificial intelligence Preprint Oct 2026

RayCo4D: Ray-Conditioned Continuous Motion Model for Monocular 4D Dynamic Reconstruction

Reconstructing dynamic 3D scenes from monocular video requires inferring motion from noisy and intermittently visible observations. Long-range tracks provide valuable geometric constraints, but integrating their fragmented temporal coverage into shared, continuous motion remains challenging. We introduce RayCo4D, a ray...

Yuan-Xiang Ni, Xian-Liang Huang, Rui-Han Hou et al. · 0 citations

Preprint Aug 2026

CoGeo-GS: Concept-Driven and Geometry-Aware Multi-Object Removal in 3D Scenes

CoGeo-GS assigns concept-aware semantic tags to Gaussians, enabling flexible object selection and reducing interference between foreground objects and background structures within a single optimization stage, and introduces a geometry-aware completion pipeline that combines monocular depth priors with diffusion-based r...

Yuan-Xiang Ni, Xian-Liang Huang, Chen-Hang Ma et al. · 0 citations