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Chun Pong Lau

5 accepted papers

2025

Instant Adversarial Purification with Adversarial Consistency Distillation

CVPR 2025poster

Neural networks have revolutionized numerous fields with their exceptional performance, yet they remain susceptible to adversarial attacks through subtle perturbations. While diffusion-based purification methods like DiffPure offer promising defense mechanisms, their computational overhead presents…

Cited by 4SourcePDFScholar
2025

T2ICount: Enhancing Cross-modal Understanding for Zero-Shot Counting

CVPR 2025highlight

Zero-shot object counting aims to count instances of arbitrary object categories specified by text descriptions. Existing methods typically rely on vision-language models like CLIP, but often exhibit limited sensitivity to text prompts. We present T2ICount, a diffusion-based framework that leverages…

2024

Identifying Attack-Specific Signatures in Adversarial Examples

ICASSP 2024accepted

The adversarial attack literature contains numerous algorithms for crafting perturbations which manipulate neural network predictions. Many of these adversarial attacks optimize inputs with the same constraints and have similar downstream impact on the models they attack. In this work, we first show…

Cited by 0SourceScholar
2022

Segment and Complete: Defending Object Detectors Against Adversarial Patch Attacks With Robust Patch Detection

CVPR 2022poster

Object detection plays a key role in many security-critical systems. Adversarial patch attacks, which are easy to implement in the physical world, pose a serious threat to state-of-the-art object detectors. Developing reliable defenses for object detectors against patch attacks is critical but sever…

Cited by 111PDFcodeScholar
2020

Dual Manifold Adversarial Robustness: Defense against Lp and non-Lp Adversarial Attacks

NeurIPS 2020poster

Adversarial training is a popular defense strategy against attack threat models with bounded Lp norms. However, it often degrades the model performance on normal images and more importantly, the defense does not generalize well to novel attacks. Given the success of deep generative models such as GA…

Cited by 70SourcePDFScholar