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CLIP (Contrastive Language-Image Pre-training) uses contrastive learning from noise image-text pairs to excel at recognizing a wide array of candidates, yet its focus on broad associations hinders the precision in distinguishing subtle…

计算机视觉与模式识别 · 计算机科学 2026-05-18 Ziyu Liu , Zeyi Sun , Yuhang Zang , Wei Li , Pan Zhang , Xiaoyi Dong , Yuanjun Xiong , Dahua Lin , Jiaqi Wang

We address the problem of anomaly detection in videos. The goal is to identify unusual behaviours automatically by learning exclusively from normal videos. Most existing approaches are usually data-hungry and have limited generalization…

计算机视觉与模式识别 · 计算机科学 2020-07-16 Yiwei Lu , Frank Yu , Mahesh Kumar Krishna Reddy , Yang Wang

Recognizing unseen fine-grained categories demands a model that can distinguish subtle visual differences. This is typically achieved by transferring visual-attribute relationships from seen classes to unseen classes. The core challenge is…

计算机视觉与模式识别 · 计算机科学 2025-12-16 Zhi Chen , Jingcai Guo , Taotao Cai , Yuxiang Cai

Human visual system is modeled in engineering field providing feature-engineered methods which detect contrasted/surprising/unusual data into images. This data is "interesting" for humans and leads to numerous applications. Deep learning…

计算机视觉与模式识别 · 计算机科学 2021-09-24 Matei Mancas , Phutphalla Kong , Bernard Gosselin

Zero-Shot Anomaly Detection (ZSAD) aims to identify and localize anomalous regions in images of unseen object classes. While recent methods based on vision-language models like CLIP show promise, their performance is constrained by existing…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Yuheng Shao , Lizhang Wang , Changhao Li , Peixian Chen , Qinyuan Liu

Visual anomaly detection in real-world industrial settings faces two major limitations. First, most existing methods are trained on purely normal data or on unlabeled datasets assumed to be predominantly normal, presuming the absence of…

计算机视觉与模式识别 · 计算机科学 2026-02-05 Anindya Sundar Das , Monowar Bhuyan

Visual anomaly detection is essential in industrial manufacturing, yet traditional methods often rely heavily on extensive normal datasets and task-specific models, limiting their scalability. Recent advancements in large-scale…

计算机视觉与模式识别 · 计算机科学 2024-11-20 Zongxiang Hu , Zhaosheng Zhang

Recently, the rapid advancements of vision-language models, such as CLIP, leads to significant progress in zero-/few-shot anomaly detection (ZFSAD) tasks. However, most existing CLIP-based ZFSAD methods commonly assume prior knowledge of…

计算机视觉与模式识别 · 计算机科学 2025-06-23 Hong Huang , Weixiang Sun , Zhijian Wu , Jingwen Niu , Donghuan Lu , Xian Wu , Yefeng Zheng

Depth estimation is a traditional computer vision task, which plays a crucial role in understanding 3D scene geometry. Recently, deep-convolutional-neural-networks based methods have achieved promising results in the monocular depth…

计算机视觉与模式识别 · 计算机科学 2019-01-30 Yuru Chen , Haitao Zhao , Zhengwei Hu

Generic object detection has been immensely promoted by the development of deep convolutional neural networks in the past decade. However, in the domain shift circumstance, the changes in weather, illumination, etc., often cause domain gap,…

计算机视觉与模式识别 · 计算机科学 2020-09-08 Hang Yang , Shan Jiang , Xinge Zhu , Mingyang Huang , Zhiqiang Shen , Chunxiao Liu , Jianping Shi

Cloud cover can significantly hinder the use of remote sensing images for Earth observation, prompting urgent advancements in cloud removal technology. Recently, deep learning strategies have shown strong potential in restoring…

计算机视觉与模式识别 · 计算机科学 2024-11-21 Wenli Huang , Ye Deng , Yang Wu , Jinjun Wang

The detection and tracking of celestial surface terrain features are crucial for autonomous spaceflight applications, including Terrain Relative Navigation (TRN), Entry, Descent, and Landing (EDL), hazard analysis, and scientific data…

计算机视觉与模式识别 · 计算机科学 2025-07-15 Timothy Chase , Karthik Dantu

Fine-tuning vision-language models (VLMs) like CLIP to downstream tasks is often necessary to optimize their performance. However, a major obstacle is the limited availability of labeled data. We study the use of pseudolabels, i.e.,…

计算机视觉与模式识别 · 计算机科学 2024-03-11 Cristina Menghini , Andrew Delworth , Stephen H. Bach

Scene Coordinate Regression (SCR) is a visual localization technique that utilizes deep neural networks (DNN) to directly regress 2D-3D correspondences for camera pose estimation. However, current SCR methods often face challenges in…

机器人学 · 计算机科学 2025-08-26 Kuan Xu , Zeyu Jiang , Haozhi Cao , Shenghai Yuan , Chen Wang , Lihua Xie

Recently, multi-class anomaly classification has garnered increasing attention. Previous methods directly cluster anomalies but often struggle due to the lack of anomaly-prior knowledge. Acquiring this knowledge faces two issues: the…

计算机视觉与模式识别 · 计算机科学 2025-03-28 Ziming Huang , Xurui Li , Haotian Liu , Feng Xue , Yuzhe Wang , Yu Zhou

Adapting vision-language models to remote sensing imagery presents a fundamental challenge: both the visual and linguistic distributions of satellite data lie far outside natural image pretraining corpora. Despite this, prompting remains…

计算机视觉与模式识别 · 计算机科学 2026-04-13 Harshith Kethavath , Weiming Hu

Recent advances in contrastive language-image pretraining (CLIP) have demonstrated strong capabilities in zero-shot classification by aligning visual representations with target text embeddings in an image level. However, in dense…

计算机视觉与模式识别 · 计算机科学 2024-10-29 Feng Wang , Jieru Mei , Alan Yuille

Semi-supervised anomaly detection for sensor signals is critical in ensuring system reliability in smart manufacturing. However, existing methods rely heavily on data correlation, neglecting causality and leading to potential…

机器学习 · 计算机科学 2024-05-17 Xiangwei Chen , Ruliang Xiaoa , Zhixia Zeng , Zhipeng Qiu , Shi Zhang , Xin Du

With the rapid growth of multimedia data, such as image and text, it is a highly challenging problem to effectively correlate and retrieve the data of different media types. Naturally, when correlating an image with textual description,…

多媒体 · 计算机科学 2018-04-26 Jinwei Qi , Yuxin Peng , Yuxin Yuan

Humans can easily detect a defect (anomaly) because it is different or salient when compared to the surface it resides on. Today, manual human visual inspection is still the norm because it is difficult to automate anomaly detection. Neural…

机器学习 · 计算机科学 2019-11-26 Manpreet Singh Minhas , John Zelek