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Lei Xiao

15 accepted papers

2026

AVA-VLA: Improving Vision-Language-Action models with Active Visual Attention

CVPR 2026

Vision-Language-Action (VLA) models have shown remarkable progress in embodied tasks recently, but most methods process visual observations independently at each timestep. This history-agnostic design treats robot manipulation as a Markov Decision Process, even though real-world robotic control is i

Cited by 0SourceScholar
2026

AdaCache: Adaptive Caching and Context Augmentation for Efficient LLM Serving

ICLR 2026poster

Retrieval-Augmented Generation (RAG) significantly enhances Large Language Models by integrating external knowledge sources, but at the cost of substantial computational overhead from extended input sequences. Current RAG systems exhibit two fundamental inefficiencies: redundant processing of frequ…

Cited by 0SourceScholar
2026

GeoPredict: Leveraging Predictive Kinematics and 3D Gaussian Geometry for Precise VLA Manipulation

CVPR 2026

Vision-Language-Action (VLA) models achieve strong generalization in robotic manipulation but remain largely reactive and 2D-centric, making them unreliable in tasks that require precise 3D reasoning. We propose GeoPredict, a geometry-aware VLA framework that augments a continuous-action policy with

Cited by 0SourcecodeScholar
2026

Towards Safe and Optimal Online Bidding: A Modular Look-ahead Lyapunov Framework

ICLR 2026poster

This paper studies online bidding subject to simultaneous budget and return-on-investment (ROI) constraints, which encodes the goal of balancing high volume and profitability. We formulate the problem as a general constrained online learning problem that can be applied to diverse bidding settings (e…

Cited by 0SourceScholar
2025

DGS-LRM: Real-Time Deformable 3D Gaussian Reconstruction From Monocular Videos

NeurIPS 2025poster

We introduce the Deformable Gaussian Splats Large Reconstruction Model (DGS-LRM), the first feed-forward method predicting deformable 3D Gaussian splats from a monocular posed video of any dynamic scene. Feed-forward scene reconstruction has gained significant attention for its ability to rapidly cr…

Cited by 0SourceScholar
2025

Geometry-guided Online 3D Video Synthesis with Multi-View Temporal Consistency

CVPR 2025poster

We introduce a novel geometry-guided online video view synthesis method with enhanced view and temporal consistency. Traditional approaches achieve high-quality synthesis from dense multi-view camera setups but require significant computational resources. In contrast, selective-input methods reduce…

Cited by 0SourcePDFScholar
2025

LIRM: Large Inverse Rendering Model for Progressive Reconstruction of Shape, Materials and View-dependent Radiance Fields

CVPR 2025poster

We present Large Inverse Rendering Model (LIRM), a transformer architecture that jointly reconstructs high-quality shape, materials, and radiance fields with view-dependent effects in less than a second. Our model builds upon the recent Large Reconstruction Models (LRMs) that achieve state-of-the-ar…

Cited by 0SourcePDFScholar
2024

ReplaceAnything3D: Text-Guided Object Replacement in 3D Scenes with Compositional Scene Representations

NeurIPS 2024poster

We introduce ReplaceAnything3D model RAM3D, a novel method for 3D object replacement in 3D scenes based on users' text description. Given multi-view images of a scene, a text prompt describing the object to replace, and another describing the new object, our Erase-and-Replace approach can effectivel…

Cited by 1SourcePDFScholar
2024

TextureDreamer: Image-Guided Texture Synthesis Through Geometry-Aware Diffusion

CVPR 2024poster

We present TextureDreamer a novel image-guided texture synthesis method to transfer relightable textures from a small number of input images (3 to 5) to target 3D shapes across arbitrary categories. Texture creation is a pivotal challenge in vision and graphics. Industrial companies hire experienced…

2023

AdaTask: A Task-Aware Adaptive Learning Rate Approach to Multi-Task Learning

AAAI 2023technical

Multi-task learning (MTL) models have demonstrated impressive results in computer vision, natural language processing, and recommender systems. Even though many approaches have been proposed, how well these approaches balance different tasks on each parameter still remains unclear. In this paper, we…

Cited by 62SourcePDFScholar
2023

Multimodal High-order Relation Transformer for Scene Boundary Detection

ICCV 2023poster

Scene boundary detection breaks down long videos into meaningful story-telling units and plays a crucial role in high-level video understanding. Despite significant advancements in this area, this task remains a challenging problem as it requires a comprehensive understanding of multimodal cues and…

Cited by 5PDFScholar
2023

Temporally Consistent Online Depth Estimation Using Point-Based Fusion

CVPR 2023poster

Depth estimation is an important step in many computer vision problems such as 3D reconstruction, novel view synthesis, and computational photography. Most existing work focuses on depth estimation from single frames. When applied to videos, the result lacks temporal consistency, showing flickering…

2015

Defocus Deblurring and Superresolution for Time-of-Flight Depth Cameras

CVPR 2015poster

Continuous-wave time-of-flight (ToF) cameras show great promise as low-cost depth image sensors in mobile applications. However, they also suffer from several challenges, including limited illumination intensity, which mandates the use of large numerical aperture lenses, and thus results in a shallo…

Cited by 37SourcePDFScholar