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Despite its prevalent use in image-text matching tasks in a zero-shot manner, CLIP has been shown to be highly vulnerable to adversarial perturbations added onto images. Recent studies propose to finetune the vision encoder of CLIP with…

Computer Vision and Pattern Recognition · Computer Science 2025-03-06 Songlong Xing , Zhengyu Zhao , Nicu Sebe

In this paper, we study the problem of zero-shot sketch-based image retrieval (ZS-SBIR). The prior methods tackle the problem in a two-modality setting with only category labels or even no textual information involved. However, the growing…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Hanwen Su , Ge Song , Kai Huang , Jiyan Wang , Ming Yang

Recent studies on visual anomaly detection (AD) of industrial objects/textures have achieved quite good performance. They consider an unsupervised setting, specifically the one-class setting, in which we assume the availability of a set of…

Computer Vision and Pattern Recognition · Computer Science 2023-07-10 Jie Zhang , Masanori Suganuma , Takayuki Okatani

Learning discriminative 3D representations that generalize well to unknown testing categories is an emerging requirement for many real-world 3D applications. Existing well-established methods often struggle to attain this goal due to…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Zhichuan Wang , Yang Zhou , Jinhai Xiang , Yulong Wang , Xinwei He

This paper studies zero-shot object recognition using event camera data. Guided by CLIP, which is pre-trained on RGB images, existing approaches achieve zero-shot object recognition by optimizing embedding similarities between event data…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Yan Yang , Liyuan Pan , Dongxu Li , Liu Liu

Unsupervised anomaly detection (AD) is critical for a wide range of practical applications, from network security to health and medical tools. Due to the diversity of problems, no single algorithm has been found to be superior for all AD…

Machine Learning · Computer Science 2023-05-18 Małgorzata Gutowska , Suzanne Little , Andrew McCarren

Industrial anomaly detection (IAD) plays a crucial role in the maintenance and quality control of manufacturing processes. In this paper, we propose a novel approach, Vision-Language Anomaly Detection via Contrastive Cross-Modal Training…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Kun Qian , Tianyu Sun , Wenhong Wang

Recent advances in visual-language models have shown remarkable zero-shot text-image matching ability that is transferable to downstream tasks such as object detection and segmentation. Adapting these models for object counting, however,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-11 Ruixiang Jiang , Lingbo Liu , Changwen Chen

Contrastive Language-Image Pre-training (CLIP) achieves promising results in 2D zero-shot and few-shot learning. Despite the impressive performance in 2D, applying CLIP to help the learning in 3D scene understanding has yet to be explored.…

Computer Vision and Pattern Recognition · Computer Science 2023-04-07 Runnan Chen , Youquan Liu , Lingdong Kong , Xinge Zhu , Yuexin Ma , Yikang Li , Yuenan Hou , Yu Qiao , Wenping Wang

Universal visual anomaly detection aims to identify anomalies from novel or unseen vision domains without additional fine-tuning, which is critical in open scenarios. Recent studies have demonstrated that pre-trained vision-language models…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Bin-Bin Gao , Yue Zhou , Jiangtao Yan , Yuezhi Cai , Weixi Zhang , Meng Wang , Jun Liu , Yong Liu , Lei Wang , Chengjie Wang

Generalized Zero-shot Semantic Segmentation aims to segment both seen and unseen categories only under the supervision of the seen ones. To tackle this, existing methods adopt the large-scale Vision Language Models (VLMs) which obtain…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Jialei Chen , Daisuke Deguchi , Chenkai Zhang , Xu Zheng , Hiroshi Murase

Recognizing the activities causing distraction in real-world driving scenarios is critical for ensuring the safety and reliability of both drivers and pedestrians on the roadways. Conventional computer vision techniques are typically…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Md Zahid Hasan , Jiajing Chen , Jiyang Wang , Mohammed Shaiqur Rahman , Ameya Joshi , Senem Velipasalar , Chinmay Hegde , Anuj Sharma , Soumik Sarkar

Zero-Shot Video Anomaly Detection (ZS-VAD) requires temporally localizing anomalies without target domain training data, which is a crucial task due to various practical concerns, e.g., data privacy or new surveillance deployments.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-30 Canhui Tang , Sanping Zhou , Haoyue Shi , Le Wang

Contrastive language-image pretraining (CLIP) links vision and language modalities into a unified embedding space, yielding the tremendous potential for vision-language (VL) tasks. While early concurrent works have begun to study this…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Zhecan Wang , Noel Codella , Yen-Chun Chen , Luowei Zhou , Jianwei Yang , Xiyang Dai , Bin Xiao , Haoxuan You , Shih-Fu Chang , Lu Yuan

Human-centric visual analysis plays a pivotal role in diverse applications, including surveillance, healthcare, and human-computer interaction. With the emergence of large-scale unlabeled human image datasets, there is an increasing need…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Mingshuang Luo , Ruibing Hou , Bo Chao , Hong Chang , Zimo Liu , Yaowei Wang , Shiguang Shan

Vision-language models (VLMs) such as CLIP demonstrate strong generalization in zero-shot classification but remain highly vulnerable to adversarial perturbations. Existing methods primarily focus on adversarial fine-tuning or prompt…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Xingyu Zhu , Beier Zhu , Shuo Wang , Kesen Zhao , Hanwang Zhang

We study the problem of few-shot out-of-distribution (OOD) detection, which aims to detect OOD samples from unseen categories during inference time with only a few labeled in-domain (ID) samples. Existing methods mainly focus on training…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Xinyi Chen , Yaohui Li , Haoxing Chen

Although deep learning models have shown impressive performance on supervised learning tasks, they often struggle to generalize well when the training (source) and test (target) domains differ. Unsupervised domain adaptation (DA) has…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Mainak Singha , Harsh Pal , Ankit Jha , Biplab Banerjee

Responding to the challenge of detecting unusual radar targets in a well identified environment, innovative anomaly and novelty detection methods keep emerging in the literature. This work aims at presenting a benchmark gathering common and…

Signal Processing · Electrical Eng. & Systems 2021-06-22 Martin Bauw , Santiago Velasco-Forero , Jesus Angulo , Claude Adnet , Olivier Airiau

A vision-language foundation model pretrained on very large-scale image-text paired data has the potential to provide generalizable knowledge representation for downstream visual recognition and detection tasks, especially on supplementing…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Jiayi Lin , Shaogang Gong