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Chirui Chang

8 accepted papers

2026

ASSIST-3D: Adapted Scene Synthesis for Class-Agnostic 3D Instance Segmentation

AAAI 2026technical

Class-agnostic 3D instance segmentation tackles the challenging task of segmenting all object instances, including previously unseen ones, without semantic class reliance. Current methods struggle with generalization due to the scarce annotated 3D scene data or noisy 2D segmentations. While syntheti

Cited by 0SourcePDFScholar
2026

Dynamic Important Example Mining for Reinforcement Finetuning

CVPR 2026

Reinforcement fine-tuning (RFT) is increasingly used to strengthen the reasoning abilities of large models, yet its effectiveness is bound by how training data are selected and used. Most data-centric RFT methods rely on static or heuristic sample selection, implicitly assuming a sample's value is f

Cited by 0SourcecodeScholar
2026

ObjectMorpher: 3D-Aware Image Editing via Deformable 3DGS

CVPR 2026

Achieving precise, object-level control in image editing remains challenging: 2D methods lack 3D awareness and often yield ambiguous or implausible results, while existing 3D-aware approaches rely on heavy optimization or incomplete monocular reconstructions. We present ObjectMorpher, a unified, int

Cited by 0SourceScholar
2025

Aligning Effective Tokens with Video Anomaly in Large Language Models

ICCV 2025poster

Understanding abnormal events in videos is a vital and challenging task that has garnered significant attention in a wide range of applications. Although current video understanding Multi-modal Large Language Models (MLLMs) are capable of analyzing general videos, they often struggle to handle anoma…

Cited by 0SourcePDFScholar
2025

How Far are AI-generated Videos from Simulating the 3D Visual World: A Learned 3D Evaluation Approach

ICCV 2025poster

Recent advancements in video diffusion models enable the generation of photorealistic videos with impressive 3D consistency and temporal coherence. However, the extent to which these AI-generated videos simulate the 3D visual world remains underexplored. In this paper, we introduce Learned 3D Evalua…

Cited by 0SourcePDFScholar
2024

Total-Decom: Decomposed 3D Scene Reconstruction with Minimal Interaction

CVPR 2024highlight

Scene reconstruction from multi-view images is a fundamental problem in computer vision and graphics. Recent neural implicit surface reconstruction methods have achieved high-quality results; however editing and manipulating the 3D geometry of reconstructed scenes remains challenging due to the abse…

2023

MarS3D: A Plug-and-Play Motion-Aware Model for Semantic Segmentation on Multi-Scan 3D Point Clouds

CVPR 2023poster

3D semantic segmentation on multi-scan large-scale point clouds plays an important role in autonomous systems. Unlike the single-scan-based semantic segmentation task, this task requires distinguishing the motion states of points in addition to their semantic categories. However, methods designed fo…