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Ruofan Liang

14 accepted papers

2026

GeoRelight: Learning Joint Geometrical Relighting and Reconstruction with Flexible Multi-Modal Diffusion Transformers

CVPR 2026

Relighting a person from a single photo is an attractive but ill-posed task, as a 2D image ambiguously entangles 3D geometry, intrinsic appearance, and illumination. Current methods either use sequential pipelines that suffer from error accumulation, or they do not explicitly leverage 3D geometry du

Cited by 0SourceScholar
2026

LuxRemix: Lighting Decomposition and Remixing for Indoor Scenes

CVPR 2026

We present a novel approach for interactive light editing in indoor scenes from a single multi-view scene capture. Our method leverages a generative image-based light decomposition model that factorizes complex indoor scene illumination into its constituent light sources. This factorization enables

Cited by 0SourcecodeScholar
2026

MERG3R: A Divide-and-Conquer Approach to Large-Scale Neural Visual Geometry

CVPR 2026

Recent advancements in neural visual geometry, including transformer-based models such as VGGT and Pi3, have achieved impressive accuracy on 3D reconstruction tasks. However, their reliance on full attention makes them fundamentally limited by GPU memory capacity, preventing them from scaling to lar

Cited by 0SourceScholar
2025

ContraGS: Codebook-Condensed and Trainable Gaussian Splatting for Fast, Memory-Efficient Reconstruction

ICCV 2025accepted

3D Gaussian Splatting (3DGS) is a state-of-art technique to model real-world scenes with high quality and real-time rendering.Typically, a higher quality representation can be achieved by using a large number of 3D Gaussians. However, using large 3D Gaussian counts significantly increases the GPU de…

Cited by 0SourcePDFScholar
2025

Controllable Weather Synthesis and Removal with Video Diffusion Models

ICCV 2025poster

Generating realistic and controllable weather effects in videos is valuable for many applications. Physics-based weather simulation requires precise reconstructions that are hard to scale to in-the-wild videos, while current video editing often lacks realism and control.In this work, we introduce We…

Cited by 0SourcePDFScholar
2025

DISORF: A Distributed Online 3D Reconstruction Framework for Mobile Robots

RA-L 2025

We present a framework, DISORF, to enable online 3D reconstruction and visualization of scenes captured by resource-constrained mobile robots and edge devices. To address the limited computing capabilities of edge devices and potentially limited network availability, we design a framework that effic

Cited by 0SourcecodeScholar
2025

Diffusion Renderer: Neural Inverse and Forward Rendering with Video Diffusion Models

CVPR 2025poster

Understanding and modeling lighting effects are fundamental tasks in computer vision and graphics. Classic physically-based rendering (PBR) accurately simulates the light transport, but relies on precise scene representations--explicit 3D geometry, high-quality material properties, and lighting cond…

Cited by 3SourcePDFScholar
2025

LuxDiT: Lighting Estimation with Video Diffusion Transformer

NeurIPS 2025poster

Estimating scene lighting from a single image or video remains a longstanding challenge in computer vision and graphics. Learning-based approaches are constrained by the scarcity of ground-truth HDR environment maps, which are expensive to capture and limited in diversity. While recent generative mo…

Cited by 0SourceScholar
2025

Retri3D: 3D Neural Graphics Representation Retrieval

ICLR 2025spotlight

Learnable 3D Neural Graphics Representations (3DNGR) have emerged as promising 3D representations for reconstructing 3D scenes from 2D images. Numerous works, including Neural Radiance Fields (NeRF), 3D Gaussian Splatting (3DGS), and their variants, have significantly enhanced the quality of these r…

Cited by 0SourcePDFScholar
2025

UniRelight: Learning Joint Decomposition and Synthesis for Video Relighting

NeurIPS 2025spotlight

We address the challenge of relighting a single image or video, a task that demands precise scene intrinsic understanding and high-quality light transport synthesis. Existing end-to-end relighting models are often limited by the scarcity of paired multi-illumination data, restricting their ability t…

Cited by 0SourceScholar
2024

Photorealistic Object Insertion with Diffusion-Guided Inverse Rendering

ECCV 2024poster

"The correct insertion of virtual objects in images of real-world scenes requires a deep understanding of the scene’s lighting, geometry and materials, as well as the image formation process. While recent large-scale diffusion models have shown strong generative and inpainting capabilities, we find…

Cited by 6SourcePDFScholar
2023

ENVIDR: Implicit Differentiable Renderer with Neural Environment Lighting

ICCV 2023oral

Recent advances in neural rendering have shown great potential for reconstructing scenes from multiview images. However, accurately representing objects with glossy surfaces remains a challenge for existing methods. In this work, we introduce ENVIDR, a rendering and modeling framework for high-quali…

Cited by 51PDFcodeScholar
2022

CoordX: Accelerating Implicit Neural Representation with a Split MLP Architecture

ICLR 2022poster

Implicit neural representations with multi-layer perceptrons (MLPs) have recently gained prominence for a wide variety of tasks such as novel view synthesis and 3D object representation and rendering. However, a significant challenge with these representations is that both training and inference wit…

Cited by 16SourcePDFScholar
2020

Knowledge Consistency between Neural Networks and Beyond

ICLR 2020poster

This paper aims to analyze knowledge consistency between pre-trained deep neural networks. We propose a generic definition for knowledge consistency between neural networks at different fuzziness levels. A task-agnostic method is designed to disentangle feature components, which represent the consis…

Cited by 41SourceScholar