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Junfeng Ni

9 accepted papers

2026

G4Splat: Geometry-Guided Gaussian Splatting with Generative Prior

ICLR 2026poster

Despite recent advances in leveraging generative prior from pre-trained diffusion models for 3D scene reconstruction, existing methods still face two critical limitations. First, due to the lack of reliable geometric supervision, they struggle to produce high-quality reconstructions even in observed…

Cited by 0SourcecodeScholar
2026

Learning Physics-Grounded 4D Dynamics with Neural Gaussian Force Fields

ICLR 2026poster

Predicting physical dynamics from raw visual data remains a major challenge in AI. While recent video generation models have achieved impressive visual quality, they still cannot consistently generate physically plausible videos due to a lack of modeling of physical laws. Recent approaches combining…

Cited by 0SourcecodeScholar
2026

Lifting Unlabeled Internet-level Data for 3D Scene Understanding

CVPR 2026

Annotated 3D scene data is scarce and expensive to acquire, while abundant unlabeled videos are readily available on the internet. In this paper, we demonstrate that carefully designed data engines can leverage web-curated, unlabeled videos to automatically generate training data, to facilitate end-

Cited by 0SourcecodeScholar
2025

Building Interactable Replicas of Complex Articulated Objects via Gaussian Splatting

ICLR 2025poster

Building interactable replicas of articulated objects is a key challenge in computer vision. Existing methods often fail to effectively integrate information across different object states, limiting the accuracy of part-mesh reconstruction and part dynamics modeling, particularly for complex multi-p…

Cited by 0SourcePDFScholar
2025

Decompositional Neural Scene Reconstruction with Generative Diffusion Prior

CVPR 2025poster

Decompositional reconstruction of 3D scenes, with complete shapes and detailed texture of all objects within, is intriguing for downstream applications but remains challenging, particularly with sparse views as input. Recent approaches incorporate semantic or geometric regularization to address this…

2025

MOVIS: Enhancing Multi-Object Novel View Synthesis for Indoor Scenes

CVPR 2025poster

Repurposing pre-trained diffusion models has been proven to be effective for NVS. However, these methods are mostly limited to a single object; directly applying such methods to compositional multi-object scenarios yields inferior results, especially incorrect object placement and inconsistent shape…

2025

TACO: Taming Diffusion for in-the-wild Video Amodal Completion

ICCV 2025poster

Humans can infer complete shapes and appearances of objects from limited visual cues, relying on extensive prior knowledge of the physical world. However, completing partially observable objects while ensuring consistency across video frames remains challenging for existing models, especially for un…

Cited by 0SourcePDFScholar
2025

Trace3D: Consistent Segmentation Lifting via Gaussian Instance Tracing

ICCV 2025poster

We address the challenge of lifting 2D visual segmentation to 3D in Gaussian Splatting. Existing methods often suffer from inconsistent 2D masks across viewpoints and produce noisy segmentation boundaries as they neglect these semantic cues to refine the learned Gaussians. To overcome this, we intro…

Cited by 0SourcePDFScholar
2024

PhyRecon: Physically Plausible Neural Scene Reconstruction

NeurIPS 2024poster

We address the issue of physical implausibility in multi-view neural reconstruction. While implicit representations have gained popularity in multi-view 3D reconstruction, previous work struggles to yield physically plausible results, limiting their utility in domains requiring rigorous physical acc…

Cited by 10SourcePDFScholar