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Zhenyu Chen

13 accepted papers

2026

B-Spar: Bayesian Sparse-Reward Modeling for RL-based Image Editing

ICML 2026poster

Autonomous image-editing agents powered by multimodal large language models (MLLMs) improve transparency and controllability by translating high-level instructions into tool-mediated edit sequences, but training such agents with reinforcement learning often relies on dense proxy rewards (e.g., incre…

Cited by 0SourceScholar
2026

ComGS: Efficient 3D Object-Scene Composition via Surface Octahedral Probes

ICLR 2026poster

Gaussian Splatting (GS) enables immersive rendering, but realistic 3D object–scene composition remains challenging. Baked appearance and shadow information in GS radiance fields cause inconsistencies when combining objects and scenes. Addressing this requires relightable object reconstruction and sc…

Cited by 0SourcecodeScholar
2026

UniUGG: Unified 3D Understanding and Generation via Geometric-Semantic Encoding

ICLR 2026poster

Despite the impressive progress on understanding and generating images shown by the recent unified architectures, the integration of 3D tasks remains challenging and largely unexplored. In this paper, we introduce UniUGG, the first unified understanding and generation framework for 3D modalities. Ou…

Cited by 0SourcecodeScholar
2025

Continuous Concepts Removal in Text-to-image Diffusion Models

NeurIPS 2025poster

Text-to-image diffusion models have shown an impressive ability to generate high-quality images from input textual descriptions/prompts. However, concerns have been raised about the potential for these models to create content that infringes on copyrights or depicts disturbing subject matter. Removi…

Cited by 0SourcecodeScholar
2025

Hybrid Mesh-Gaussian Representation for Efficient Indoor Scene Reconstruction

IJCAI 2025

3D Gaussian splatting (3DGS) has demonstrated exceptional performance in image-based 3D reconstruction and real-time rendering. However, regions with complex textures require numerous Gaussians to capture significant color variations accurately, leading to inefficiencies in rendering speed. To addre

Cited by 0SourcePDFScholar
2025

SpecTRe-GS: Modeling Highly Specular Surfaces with Reflected Nearby Objects by Tracing Rays in 3D Gaussian Splatting

CVPR 2025highlight

3D Gaussian Splatting (3DGS), a recently emerged multi-view 3D reconstruction technique, has shown significant advantages in real-time rendering and explicit editing. However, 3DGS encounters challenges in the accurate modeling of both high-frequency view-dependent appearances and global illuminatio…

Cited by 0SourcePDFScholar
2025

Tightening Robustness Verification of MaxPool-based Neural Networks via Minimizing the Over-Approximation Zone

CVPR 2025poster

The robustness of neural network classifiers is important in the safety-critical domain and can be quantified by robustness verification. At present, efficient and scalable verification techniques are always sound but incomplete, and thus, the improvement of verified robustness results is the key cr…

2025

Token-Budget-Aware LLM Reasoning

ACL 2025finding

Reasoning is critical for large language models (LLMs) to excel in a wide range of tasks. While methods like Chain-of-Thought (CoT) reasoning and enhance LLM performance by decomposing problems into intermediate steps, they also incur significant overhead in token usage, leading to increased costs.…

2024

Practical Measurements of Translucent Materials with Inter-Pixel Translucency Prior

CVPR 2024poster

Material appearance is a key component of photorealism with a pronounced impact on human perception. Although there are many prior works targeting at measuring opaque materials using light-weight setups (e.g. consumer-level cameras) little attention is paid on acquiring the optical properties of tra…

Cited by 1SourcePDFScholar
2024

Towards General Robustness Verification of MaxPool-based Convolutional Neural Networks via Tightening Linear Approximation

CVPR 2024poster

The robustness of convolutional neural networks (CNNs) is vital to modern AI-driven systems. It can be quantified by formal verification by providing a certified lower bound within which any perturbation does not alter the original input's classification result. It is challenging due to nonlinear co…

2023

UniT3D: A Unified Transformer for 3D Dense Captioning and Visual Grounding

ICCV 2023poster

Performing 3D dense captioning and visual grounding requires a common and shared understanding of the underlying multimodal relationships. However, despite some previous attempts on connecting these two related tasks with highly task-specific neural modules, it remains understudied how to explicitly…

Cited by 89PDFScholar
2022

D3Net: A Unified Speaker-Listener Architecture for 3D Dense Captioning and Visual Grounding

ECCV 2022poster

"Recent work on dense captioning and visual grounding in 3D have achieved impressive results. Despite developments in both areas, the limited amount of available 3D vision-language data causes overfitting issues for 3D visual grounding and 3D dense captioning methods. Also, how to discriminatively d…

Cited by 38SourcePDFScholar