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Related papers: Defect-aware Hybrid Prompt Optimization via Progre…

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Prompting has emerged as a practical way to adapt frozen vision-language models (VLMs) for video anomaly detection (VAD). Yet, existing prompts are often overly abstract, overlooking the fine-grained human-object interactions or action…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Shu Zou , Xinyu Tian , Lukas Wesemann , Fabian Waschkowski , Zhaoyuan Yang , Jing Zhang

Contrastive Language-Image Pre-training (CLIP) models have shown promising performance on zero-shot visual recognition tasks by learning visual representations under natural language supervision. Recent studies attempt the use of CLIP to…

Computer Vision and Pattern Recognition · Computer Science 2024-02-28 Hanqiu Deng , Zhaoxiang Zhang , Jinan Bao , Xingyu Li

Recently, large-scale pre-trained vision-language models (e.g. CLIP and ALIGN) have demonstrated remarkable effectiveness in acquiring transferable visual representations. To leverage the valuable knowledge encoded within these models for…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Yi Zhang , Ce Zhang , Xueting Hu , Zhihai He

Recently, prompt learning has garnered considerable attention for its success in various Vision-Language (VL) tasks. However, existing prompt-based models are primarily focused on studying prompt generation and prompt strategies with…

Artificial Intelligence · Computer Science 2024-09-10 Ruiting Dai , Yuqiao Tan , Lisi Mo , Tao He , Ke Qin , Shuang Liang

Zero-shot recognition aims to classify an image by selecting the most compatible label description from a set of candidate classes without any task-specific supervision. In fine-grained settings, however, the relevant evidence often lies in…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Junyi Hu , Qiji Zhou , Lei Zhang , Yue Zhang

Deep generative models can create remarkably photorealistic fake images while raising concerns about misinformation and copyright infringement, known as deepfake threats. Deepfake detection technique is developed to distinguish between real…

Computer Vision and Pattern Recognition · Computer Science 2024-08-22 You-Ming Chang , Chen Yeh , Wei-Chen Chiu , Ning Yu

We present SelfPrompt, a novel prompt-tuning approach for vision-language models (VLMs) in a semi-supervised learning setup. Existing methods for tuning VLMs in semi-supervised setups struggle with the negative impact of the miscalibrated…

Computer Vision and Pattern Recognition · Computer Science 2025-01-30 Shuvendu Roy , Ali Etemad

Large-scale image-text pre-trained models enable zero-shot classification and provide consistent accuracy across various data distributions. Nonetheless, optimizing these models in downstream tasks typically requires fine-tuning, which…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Sungyeon Kim , Boseung Jeong , Donghyun Kim , Suha Kwak

Direct Preference Optimization (DPO) has gained significant attention for its simplicity and computational efficiency in aligning large language models (LLMs). Recent advancements have extended DPO to multimodal scenarios, achieving strong…

Computation and Language · Computer Science 2025-05-27 Yeyuan Wang , Dehong Gao , Rujiao Long , Lei Yi , Linbo Jin , Libin Yang , Xiaoyan Cai

Most models for weakly supervised video anomaly detection (WS-VAD) rely on multiple instance learning, aiming to distinguish normal and abnormal snippets without specifying the type of anomaly. However, the ambiguous nature of anomaly…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Chenchen Tao , Xiaohao Peng , Chong Wang , Jiafei Wu , Puning Zhao , Jun Wang , Jiangbo Qian

Understanding the vulnerability of large-scale pre-trained vision-language models like CLIP against adversarial attacks is key to ensuring zero-shot generalization capacity on various downstream tasks. State-of-the-art defense mechanisms…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Fan Yang , Mingxuan Xia , Sangzhou Xia , Chicheng Ma , Hui Hui

Confidence calibration is critical for the safe deployment of machine learning models in the real world. However, such issue in vision-language models like CLIP, particularly after fine-tuning, has not been fully addressed. In this work, we…

Machine Learning · Computer Science 2025-05-30 Shuoyuan Wang , Yixuan Li , Hongxin Wei

The reliability of artificial intelligence (AI) systems in open-world settings depends heavily on their ability to flag out-of-distribution (OOD) inputs unseen during training. Recent advances in large-scale vision-language models (VLMs)…

Machine Learning · Computer Science 2025-10-14 Faizul Rakib Sayem , Shahana Ibrahim

Deep learning (DL) has been used in the automatic diagnosis of Mild Cognitive Impairment (MCI) and Alzheimer's Disease (AD) with brain imaging data. However, previous methods have not fully exploited the relation between brain image and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Luoyao Kang , Haifan Gong , Xiang Wan , Haofeng Li

Out-of-distribution (OOD) detection has seen significant advancements with zero-shot approaches by leveraging the powerful Vision-Language Models (VLMs) such as CLIP. However, prior research works have predominantly focused on enhancing…

Computer Vision and Pattern Recognition · Computer Science 2025-01-10 Pei-Kang Lee , Jun-Cheng Chen , Ja-Ling Wu

Prompt learning methods are gaining increasing attention due to their ability to customize large vision-language models to new domains using pre-trained contextual knowledge and minimal training data. However, existing works typically rely…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Duy M. H. Nguyen , An T. Le , Trung Q. Nguyen , Nghiem T. Diep , Tai Nguyen , Duy Duong-Tran , Jan Peters , Li Shen , Mathias Niepert , Daniel Sonntag

Detecting anomalies using deep learning has become a major challenge over the last years, and is becoming increasingly promising in several fields. The introduction of self-supervised learning has greatly helped many methods including…

Computer Vision and Pattern Recognition · Computer Science 2022-03-18 Loic Jezequel , Ngoc-Son Vu , Jean Beaudet , Aymeric Histace

Effectively addressing the challenge of industrial Anomaly Detection (AD) necessitates an ample supply of defective samples, a constraint often hindered by their scarcity in industrial contexts. This paper introduces a novel algorithm…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Hanxi Li , Zhengxun Zhang , Hao Chen , Lin Wu , Bo Li , Deyin Liu , Mingwen Wang

Zero-shot anomaly detection (ZSAD) enables anomaly detection without normal samples from target categories, addressing scenarios where task-specific training data is unavailable. However, existing ZSAD methods either neglect adaptation of…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Kiyoon Jeong , Jaehyuk Heo , Junyeong Son , Pilsung Kang

Pre-trained vision-language models (VLMs) have shown remarkable generalization capabilities via prompting, which leverages VLMs as knowledge bases to extract information beneficial for downstream tasks. However, existing methods primarily…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Xiaoyu Qiu , Hao Feng , Yuechen Wang , Wengang Zhou , Houqiang Li