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Xun Lin

10 accepted papers

2026

FaceShield: Explainable Face Anti-Spoofing with Multimodal Large Language Models

AAAI 2026technical

Face anti-spoofing (FAS) is crucial for protecting facial recognition systems from presentation attacks. Previous methods approached this task as a classification problem, lacking interpretability and reasoning behind the predicted results. Recently, multimodal large language models (MLLMs) have sho

Cited by 0SourcePDFScholar
2026

Multimodal Mixture-of-Experts with Retrieval Augmentation for Protein Active Site Identification

AAAI 2026technical

Accurate identification of protein active sites at the residue level is crucial for understanding protein function and advancing drug discovery. However, current methods face two critical challenges: vulnerability in single-instance prediction due to sparse training data, and inadequate modality rel

Cited by 0SourcePDFScholar
2026

PA-FAS: Towards Interpretable and Generalizable Multimodal Face Anti-Spoofing via Path-Augmented Reinforcement Learning

AAAI 2026technical

In recent years, face anti-spoofing (FAS) has made notable progress in multimodal fusion, cross-domain generalization, and interpretability. With the development of large language models and reinforcement learning (RL), strategy-based training paradigms offer new opportunities for jointly modeling m

Cited by 0SourcePDFScholar
2026

StegaVAR: Privacy-Preserving Video Action Recognition via Steganographic Domain Analysis

AAAI 2026technical

Despite the rapid progress of deep learning in video action recognition (VAR) in recent years, privacy leakage in videos remains a critical concern. Current state-of-the-art privacy-preserving methods often rely on anonymization. These methods suffer from (1) low concealment, where producing visuall

Cited by 0SourcePDFScholar
2026

Time Is All It Takes: Spike-Retiming Attacks on Event-Driven Spiking Neural Networks

ICLR 2026poster

Spiking neural networks (SNNs) compute with discrete spikes and exploit temporal structure, yet most adversarial attacks change intensities or event counts instead of timing. We study a timing-only adversary that retimes existing spikes while preserving spike counts and amplitudes in event-driven SN…

Cited by 0SourcecodeScholar
2025

Backdoor Attacks Against No-Reference Image Quality Assessment Models via a Scalable Trigger

AAAI 2025technical

No-Reference Image Quality Assessment (NR-IQA), responsible for assessing the quality of a single input image without using any reference, plays a critical role in evaluating and optimizing computer vision systems, e.g., low-light enhancement. Recent research indicates that NR-IQA models are suscep…

2025

Big-Moe: Bypassing Isolated Gating For Generalized Multimodal Face Anti-Spoofing

ICASSP 2025accepted

In the domain of facial recognition security, multimodal Face Anti-Spoofing (FAS) is essential for countering presentation attacks. However, existing technologies encounter challenges due to modality biases and imbalances, as well as domain shifts. Our research introduces a Mixture of Experts (MoE)…

Cited by 0SourceScholar
2025

DADM: Dual Alignment of Domain and Modality for Face Anti-spoofing

ICCV 2025poster

With the availability of diverse sensor modalities (i.e., RGB, Depth, Infrared) and the success of multi-modal learning, multi-modal face anti-spoofing (FAS) has emerged as a prominent research focus. The intuition behind it is that leveraging multiple modalities can uncover more intrinsic spoofing…

2025

EPE-P: Evidence-based Parameter-efficient Prompting for Multimodal Learning with Missing Modalities

ICASSP 2025accepted

Missing modalities are a common challenge in real-world multimodal learning scenarios, occurring during both training and testing. Existing methods for managing missing modalities often require the design of separate prompts for each modality or missing case, leading to complex designs and a substan…

Cited by 0SourceScholar
2024

Transferable Adversarial Attacks on SAM and Its Downstream Models

NeurIPS 2024poster

The utilization of large foundational models has a dilemma: while fine-tuning downstream tasks from them holds promise for making use of the well-generalized knowledge in practical applications, their open accessibility also poses threats of adverse usage. This paper, for the first time, explores th…