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Ziyuan Liu

20 accepted papers

2026

CoVAR: Co-Generation of Video and Action for Robotic Manipulation Via Multi-Modal Diffusion

ICRA 2026poster

We present a method to generate video–action pairs that follow text instructions, starting from an initial image observation and the robot’s joint states. Our approach automatically provides action labels for video diffusion mod- els, overcoming the common lack of action annotations and enabling the…

2026

DRAW2ACT: Turning Depth-Encoded Trajectories into Robotic Demonstration Videos

ICRA 2026poster

Video diffusion models provide powerful real-world simulators for embodied AI but remain limited in controllability for robotic manipulation. Recent works on trajectory-conditioned video generation address this gap but often rely on 2D trajectories or single modality conditioning, which restricts th…

2026

Orchestrating Spatial Semantics via a Zone-Graph Paradigm for Intricate Indoor Scene Generation

ICML 2026poster

Autonomous 3D indoor scene synthesis breaks down in non-convex rooms with tightly coupled spatial constraints. Data-driven generators lack topological priors for long-horizon planning, while iterative agents fragment semantics and become geometrically brittle. We present \textbf{ZoneMaestro}, a unif…

Cited by 0SourceScholar
2026

Stage-wise Distortion–Perception Traversal in Zero-shot Inverse Problems with Diffusion Models

ICML 2026poster

The distortion–perception (D–P) tradeoff is a fundamental phenomenon of Bayesian inverse problems, which characterizes the inherent tension between distortion performance and perceptual quality. Enabling flexible traversal of the D-P tradeoff at inference time is crucial for practical applications. …

Cited by 0SourceScholar
2026

VideoWeaver: Multimodal Multi-View Video-to-Video Transfer for Embodied Agents

CVPR 2026

Recent progress in video-to-video (V2V) translation has enabled realistic resimulation of embodied AI demonstrations, a capability that allows pretrained robot policies to be transferable to new environments without additional data collection. However, prior works can only operate on a single view a

Cited by 0SourceScholar
2025

Improving Diffusion-based Inverse Algorithms under Few-Step Constraint via Linear Extrapolation

NeurIPS 2025poster

Diffusion-based inverse algorithms have shown remarkable performance across various inverse problems, yet their reliance on numerous denoising steps incurs high computational costs. While recent developments of fast diffusion ODE solvers offer effective acceleration for diffusion sampling without o…

Cited by 0SourcecodeScholar
2025

OpenSU3D: Open World 3D Scene Understanding Using Foundation Models

ICRA 2025

In this paper, we present a novel, scalable approach for constructing open set, instance-level 3D scene representations, advancing open world understanding of 3D environments. Existing methods require pre-constructed 3D scenes and face scalability issues due to per-point feature representation, addi

Cited by 8SourcecodeScholar
2025

RoboEnvision: A Long-Horizon Video Generation Model for Multi-Task Robot Manipulation

IROS 2025

We address the problem of generating long-horizon videos for robotic manipulation tasks. Text-to-video diffusion models have made significant progress in photorealism, language understanding, and motion generation but struggle with long-horizon robotic tasks. Recent works use video diffusion models

Cited by 11SourceScholar
2025

RoboSwap: A GAN-driven Video Diffusion Framework For Unsupervised Robot Arm Swapping

IROS 2025

Recent advancements in generative models have revolutionized video synthesis and editing. However, the scarcity of diverse, high-quality datasets continues to hinder video-conditioned robotic learning, limiting cross-platform generalization. In this work, we address the challenge of swapping a robot

Cited by 1SourceScholar
2025

W-ControlUDA: Weather-Controllable Diffusion-assisted Unsupervised Domain Adaptation for Semantic Segmentation

RA-L 2025

Image generation has emerged as a potent strategy to enrich training data for unsupervised domain adaptation (UDA) of semantic segmentation in adverse weathers due to the scarcity of labelled target domain data. Previous UDA works commonly utilize generative adversarial networks (GANs) to translate

Cited by 6SourceScholar
2024

A Retrospective on the Robot Air Hockey Challenge: Benchmarking Robust, Reliable, and Safe Learning Techniques for Real-world Robotics

NeurIPS 2024poster

Machine learning methods have a groundbreaking impact in many application domains, but their application on real robotic platforms is still limited. Despite the many challenges associated with combining machine learning technology with robotics, robot learning remains one of the most promising direc…

Cited by 0SourcePDFScholar
2024

DiffMap: Enhancing Map Segmentation With Map Prior Using Diffusion Model

RA-L 2024

Constructing high-definition (HD) maps is a crucial requirement for enabling autonomous driving. In recent years, several map segmentation algorithms have been developed to address this need, leveraging advancements in Bird's-Eye View (BEV) perception. However, existing models still encounter challe

Cited by 17SourceScholar
2024

Implicit Learning of Scene Geometry From Poses for Global Localization

RA-L 2024

Global visual localization estimates the absolute pose of a camera using a single image, in a previously mapped area. Obtaining the pose from a single image enables many robotics and augmented/virtual reality applications. Inspired by latest advances in deep learning, many existing approaches direct

Cited by 3SourceScholar
2024

Lifelong 3D Mapping Framework for Hand-Held & Robot-Mounted LiDAR Mapping Systems

RA-L 2024

We propose a lifelong 3D mapping framework that is modular, cloud-native by design and more importantly, works for both hand-held and robot-mounted 3D LiDAR mapping systems. Our proposed framework comprises of dynamic point removal, multi-session map alignment, map change detection and map version c

Cited by 9SourceScholar
2023

DiGA: Distil To Generalize and Then Adapt for Domain Adaptive Semantic Segmentation

CVPR 2023poster

Domain adaptive semantic segmentation methods commonly utilize stage-wise training, consisting of a warm-up and a self-training stage. However, this popular approach still faces several challenges in each stage: for warm-up, the widely adopted adversarial training often results in limited performanc…

2023

Global Localization: Utilizing Relative Spatio-Temporal Geometric Constraints from Adjacent and Distant Cameras

IROS 2023poster

Re-Iocalizing a camera from a single image in a previously mapped area is vital for many computer vision applications in robotics and augmented/virtual reality. In this work, we address the problem of estimating the 6 DoF camera pose relative to a global frame from a single image. We propose to leve…

Cited by 1SourceScholar
2022

A Real World Dataset for Multi-View 3D Reconstruction

ECCV 2022poster

"We present a dataset of 371 3D models of everyday tabletop objects along with their 320,000 real world RGB and depth images. Accurate annotations of camera poses and object poses for each image are performed in a semi-automated fashion to facilitate the use of the dataset for myriad 3D applications…

2022

Domain Randomization-Enhanced Depth Simulation and Restoration for Perceiving and Grasping Specular and Transparent Objects

ECCV 2022poster

"Commercial depth sensors usually generate noisy and missing depths, especially on specular and transparent objects, which poses critical issues to downstream depth or point cloud-based tasks. To mitigate this problem, we propose a powerful RGBD fusion network, SwinDRNet, for depth restoration. We f…

2022

OCRTOC: A Cloud-Based Competition and Benchmark for Robotic Grasping and Manipulation

RA-L 2022

In this paper, we propose a cloud-based benchmark for robotic grasping and manipulation, called the OCRTOC benchmark. The benchmark focuses on the object rearrangement problem, specifically table organization tasks. We provide a set of identical real robot setups and facilitate remote experiments of

Cited by 58SourcecodeScholar
2021

Road Mapping and Localization Using Sparse Semantic Visual Features

RA-L 2021

We present a novel method for visual mapping and localization for autonomous vehicles, by extracting, modeling, and optimizing semantic road elements. Specifically, our method integrates cascaded deep models to detect standardized road elements instead of traditional point features, to seek for impr

Cited by 31SourceScholar