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Ruihang Chu

26 accepted papers

2026

AdaViewPlanner: Adapting Video Diffusion Models for Viewpoint Planning in 4D Scenes

ICLR 2026poster

Recent Text-to-Video (T2V) models have demonstrated powerful capability in visual simulation of real-world geometry and physical laws, indicating its potential as implicit world models. Inspired by this, we explore the feasibility of leveraging the video generation prior for viewpoint planning from…

Cited by 0SourceScholar
2026

From Narrow to Panoramic Vision: Attention-Guided Cold-Start Reshapes Multimodal Reasoning

ICLR 2026poster

The cold-start initialization stage plays a pivotal role in training Multimodal Large Reasoning Models (MLRMs), yet its mechanisms remain insufficiently understood. To analyze this stage, we introduce the Visual Attention Score (VAS), an attention-based metric that quantifies how much a model attend…

Cited by 0SourcecodeScholar
2026

Generative Universal Verifier as Multimodal Meta-Reasoner

ICLR 2026oral

We introduce *Generative Universal Verifier*, a novel concept and plugin designed for next-generation multimodal reasoning in vision-language models and unified multimodal models, providing the fundamental capability of reflection and refinement on visual outcomes during the reasoning and generation…

Cited by 0SourcecodeScholar
2026

LongLive: Real-time Interactive Long Video Generation

ICLR 2026poster

We present LongLive, a frame-level autoregressive (AR) framework for real-time and interactive long video generation. Long video generation presents challenges in both efficiency and quality. Diffusion and Diffusion-Forcing models can produce high-quality videos but suffer from low efficiency due to…

Cited by 188SourcecodeScholar
2026

O-DisCo-Edit: Object Distortion Control for Unified Realistic Video Editing

AAAI 2026technical

Diffusion models have recently advanced video editing, yet controllable editing remains challenging due to the need for precise manipulation of diverse object properties. Current methods require different control signal for diverse editing tasks, which complicates model design and demands significan

Cited by 0SourcePDFScholar
2026

SANA-Video: Efficient Video Generation with Block Linear Diffusion Transformer

ICLR 2026oral

We introduce SANA-Video, a small diffusion model that can efficiently generate videos up to 720×1280 resolution and minute-length duration. SANA-Video synthesizes high-resolution, high-quality and long videos with strong text-video alignment at a remarkably fast speed, deployable on RTX 5090 GPU. Tw…

Cited by 0SourcecodeScholar
2026

Smaller Models are Natural Explorers for Policy-Level Diversity in GRPO

ICML 2026poster

We identify a new dimension for enhancing rollout diversity in Group Relative Policy Optimization (GRPO) for LLMs. While GRPO relies on diverse rollouts, prevailing strategies primarily increase diversity by injecting more token-level randomness, which may introduce step-wise noise and leads to inco…

Cited by 0SourceScholar
2026

VideoZoomer: Reinforcement-Learned Temporal Focusing for Long Video Reasoning

ICLR 2026poster

Multimodal Large Language Models (MLLMs) have achieved remarkable progress in vision-language tasks yet remain limited in long video understanding due to the limited context window. Consequently, prevailing approaches tend to rely on uniform frame sampling or static pre-selection, which might overlo…

Cited by 0SourceScholar
2025

DialogGen: Multi-modal Interactive Dialogue System with Multi-turn Text-Image Generation

NAACL 2025findings

Text-to-image (T2I) generation models have significantly advanced in recent years. However, effective interaction with these models is challenging for average users due to the need for specialized prompt engineering knowledge and the inability to perform multi-turn image generation, hindering a dyna…

2025

FreeScale: Unleashing the Resolution of Diffusion Models via Tuning-Free Scale Fusion

ICCV 2025poster

Visual diffusion models achieve remarkable progress, yet they are typically trained at limited resolutions due to the lack of high-resolution data and constrained computation resources, hampering their ability to generate high-fidelity images or videos at higher resolutions. Recent efforts have expl…

Cited by 0SourcePDFScholar
2025

InSerter: Speech Instruction Following with Unsupervised Interleaved Pre-training

ACL 2025long

Recent advancements in speech large language models (SpeechLLMs) have attracted considerable attention. Nonetheless, current methods exhibit suboptimal performance in adhering to speech instructions. Notably, the intelligence of models significantly diminishes when processing speech-form input as co…

2025

TTS-VAR: A Test-Time Scaling Framework for Visual Auto-Regressive Generation

NeurIPS 2025poster

Scaling visual generation models is essential for real-world content creation, yet requires substantial training and computational expenses. Alternatively, test-time scaling has garnered growing attention due to resource efficiency and promising performance. In this work, we present the first genera…

Cited by 0SourceScholar
2025

Teaching Your Models to Understand Code via Focal Preference Alignment

EMNLP 2025

Preference learning extends the performance of Code LLMs beyond traditional supervised fine-tuning by leveraging relative quality comparisons. In existing approaches, a set of n candidate solutions is evaluated based on test case success rates, with the candidate demonstrating a higher pass rate bei

2025

The Matrix: Infinite-Horizon World Generation with Real-Time Moving Control

NeurIPS 2025poster

We present The Matrix, a foundational realistic world simulator capable of generating infinitely long 720p high-fidelity real-scene video streams with real-time, responsive control in both first- and third-person perspectives. Trained on limited supervised data from video games like Forza Horizon 5…

Cited by 0SourceScholar
2025

Unlocking Multimodal Mathematical Reasoning via Process Reward Model

NeurIPS 2025poster

Process Reward Models (PRMs) have shown promise in enhancing the mathematical reasoning capabilities of Large Language Models (LLMs) through Test-Time Scaling (TTS). However, their integration into multimodal reasoning remains largely unexplored. In this work, we take the first step toward unlocking…

Cited by 0SourceScholar
2025

Wan-Move: Motion-controllable Video Generation via Latent Trajectory Guidance

NeurIPS 2025poster

We present Wan-Move, a simple and scalable framework that brings motion control to video generative models. Existing motion-controllable methods typically suffer from coarse control granularity and limited scalability, leaving their outputs insufficient for practical use. We narrow this gap by achie…

Cited by 0SourceScholar
2023

Command-Driven Articulated Object Understanding and Manipulation

CVPR 2023poster

We present Cart, a new approach towards articulated-object manipulations by human commands. Beyond the existing work that focuses on inferring articulation structures, we further support manipulating articulated shapes to align them subject to simple command templates. The key of Cart is to utilize…

2023

DiT-3D: Exploring Plain Diffusion Transformers for 3D Shape Generation

NeurIPS 2023poster

Recent Diffusion Transformers (i.e., DiT) have demonstrated their powerful effectiveness in generating high-quality 2D images. However, it is unclear how the Transformer architecture performs equally well in 3D shape generation, as previous 3D diffusion methods mostly adopted the U-Net architecture.…

Cited by 73SourcePDFScholar
2023

DiffComplete: Diffusion-based Generative 3D Shape Completion

NeurIPS 2023poster

We introduce a new diffusion-based approach for shape completion on 3D range scans. Compared with prior deterministic and probabilistic methods, we strike a balance between realism, multi-modality, and high fidelity. We propose DiffComplete by casting shape completion as a generative task conditione…

Cited by 31SourcePDFScholar
2023

Mask-Attention-Free Transformer for 3D Instance Segmentation

ICCV 2023poster

Recently, transformer-based methods have dominated 3D instance segmentation, where mask attention is commonly involved. Specifically, object queries are guided by the initial instance masks in the first cross-attention, and then iteratively refine themselves in a similar manner. However, we observe…

Cited by 31PDFcodeScholar
2022

TWIST: Two-Way Inter-Label Self-Training for Semi-Supervised 3D Instance Segmentation

CVPR 2022poster

We explore the way to alleviate the label-hungry problem in a semi-supervised setting for 3D instance segmentation. To leverage the unlabeled data to boost model performance, we present a novel Two-Way Inter-label Self-Training framework named TWIST. It exploits inherent correlations between semanti…

Cited by 29PDFcodeScholar
2021

Scale-Aware Automatic Augmentation for Object Detection

CVPR 2021poster

We propose Scale-aware AutoAug to learn data augmentation policies for object detection. We define a new scale-aware search space, where both image- and box-level augmentations are designed for maintaining scale invariance. Upon this search space, we propose a new search metric, termed Pareto Scale…

Cited by 56PDFcodeScholar
2021

Simultaneous Semantic and Collision Learning for 6-DoF Grasp Pose Estimation

IROS 2021poster

Grasping in cluttered scenes has always been a great challenge for robots, due to the requirement of the ability to well understand the scene and object information. Previous works usually assume that the geometry information of the objects is available, or utilize a step-wise, multi-stage strategy…

Cited by 64SourcecodeScholar
2019

Vehicle Re-Identification With Viewpoint-Aware Metric Learning

ICCV 2019poster

This paper considers vehicle re-identification (re-ID) problem. The extreme viewpoint variation (up to 180 degrees) poses great challenges for existing approaches. Inspired by the behavior in human's recognition process, we propose a novel viewpoint-aware metric learning approach. It learns two metr…

Cited by 253PDFcodeScholar