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Chaohu Liu

6 accepted papers

2026

AdPO: Enhancing the Adversarial Robustness of Large Vision-Language Models with Preference Optimization

ICLR 2026poster

Large Vision-Language Models (LVLMs), such as GPT-4o and LLaVA, have recently witnessed remarkable advancements and are increasingly being deployed in real-world applications. However, inheriting the sensitivity of visual neural networks, LVLMs remain vulnerable to adversarial attacks, which can re…

Cited by 0SourceScholar
2026

Multimodal Table Understanding with Difficulty-aware Reinforcement Learning

AAAI 2026technical

Multimodal table understanding, which aims for a comprehensive grasp of table content by integrating cellular text, tabular structure, and visual presentation, remains a core yet challenging area of research. We identify that the structural complexity of a table, quantifiable by intrinsic properties

Cited by 0SourcePDFScholar
2026

TableMix: Enhancing Multimodal Table Reasoning in MLLMs from a Data-Centric Perspective

CVPR 2026

Recent advances in Multimodal Large Language Models (MLLMs) have enabled promising progress in table reasoning from visual table inputs. Despite their ability to capture rich visual cues such as color and layout, MLLMs still underperform compared to text-only models.We argue that a major limitation

Cited by 0SourceScholar
2025

Tracking the Copyright of Large Vision-Language Models through Parameter Learning Adversarial Images

ICLR 2025poster

Large vision-language models (LVLMs) have demonstrated remarkable image understanding and dialogue capabilities, allowing them to handle a variety of visual question answering tasks. However, their widespread availability raises concerns about unauthorized usage and copyright infringement, where use…

Cited by 1SourcePDFScholar
2024

HRVDA: High-Resolution Visual Document Assistant

CVPR 2024poster

Leveraging vast training data multimodal large language models (MLLMs) have demonstrated formidable general visual comprehension capabilities and achieved remarkable performance across various tasks. However their performance in visual document understanding still leaves much room for improvement. T…

Cited by 20SourcePDFScholar
2023

Attention Where It Matters: Rethinking Visual Document Understanding with Selective Region Concentration

ICCV 2023poster

We propose a novel end-to-end document understanding model called SeRum (SElective Region Understanding Model) for extracting meaningful information from document images, including document analysis, retrieval, and office automation. Unlike state-of-the-art approaches that rely on multi-stage techni…

Cited by 15PDFScholar