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Anomaly detection (AD) aims at detecting abnormal samples that deviate from the expected normal patterns. Generally, it can be trained merely on normal data, without a requirement for abnormal samples, and thereby plays an important role in…

Computer Vision and Pattern Recognition · Computer Science 2025-02-20 Yu Cai , Weiwen Zhang , Hao Chen , Kwang-Ting Cheng

Chest X-rays have become the focus of vigorous deep learning research in recent years due to the availability of large labeled datasets. While classification of anomalous findings is now possible, ensuring that they are correctly localized…

Image and Video Processing · Electrical Eng. & Systems 2022-04-22 Neha Srivathsa , Razi Mahmood , Tanveer Syeda-Mahmood

Contrastive Language-Image Pre-training (CLIP) represents the latest incarnation of pre-trained vision-language models. Although CLIP has recently shown its superior power on a wide range of downstream vision-language tasks like Visual…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Sinuo Deng , Lifang Wu , Ge Shi , Lehao Xing , Meng Jian , Ye Xiang

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…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Hong Huang , Weixiang Sun , Zhijian Wu , Jingwen Niu , Donghuan Lu , Xian Wu , Yefeng Zheng

Existing vision-language models (VLMs) such as CLIP have showcased an impressive capability to generalize well across various downstream tasks. These models leverage the synergy between visual and textual information, enabling them to…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Fangming Cui , Yonggang Zhang , Xuan Wang , Xule Wang , Liang Xiao

Chest X-Ray imaging is one of the most common radiological tools for detection of various pathologies related to the chest area and lung function. In a clinical setting, automated assessment of chest radiographs has the potential of…

Machine Learning · Computer Science 2022-10-31 David Biesner , Helen Schneider , Benjamin Wulff , Ulrike Attenberger , Rafet Sifa

Deep learning offers transformative potential in medical imaging, yet its clinical adoption is frequently hampered by challenges such as data scarcity, distribution shifts, and the need for robust task generalization. Prompt-based…

Image and Video Processing · Electrical Eng. & Systems 2025-07-03 Hao Yang , Xinlong Liang , Zhang Li , Yue Sun , Zheyu Hu , Xinghe Xie , Behdad Dashtbozorg , Jincheng Huang , Shiwei Zhu , Luyi Han , Jiong Zhang , Shanshan Wang , Ritse Mann , Qifeng Yu , Tao Tan

Recent advancements in Contrastive Language-Image Pre-training (CLIP) have demonstrated notable success in self-supervised representation learning across various tasks. However, the existing CLIP-like approaches often demand extensive GPU…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Yuexi Du , Brian Chang , Nicha C. Dvornek

Chest X-ray is one of the most popular medical imaging modalities due to its accessibility and effectiveness. However, there is a chronic shortage of well-trained radiologists who can interpret these images and diagnose the patient's…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Otabek Nazarov , Mohammad Yaqub , Karthik Nandakumar

In contrast to the incremental classification task, the incremental detection task is characterized by the presence of data ambiguity, as an image may have differently labeled bounding boxes across multiple continuous learning stages. This…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Ziyue Huang , Yupeng He , Qingjie Liu , Yunhong Wang

Remote sensing applications increasingly rely on deep learning for scene classification. However, their performance is often constrained by the scarcity of labeled data and the high cost of annotation across diverse geographic and sensor…

Computer Vision and Pattern Recognition · Computer Science 2025-10-29 Ivica Dimitrovski , Vlatko Spasev , Ivan Kitanovski

Echocardiography segmentation for cardiac analysis is time-consuming and resource-intensive due to the variability in image quality and the necessity to process scans from various standard views. While current automated segmentation methods…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Sekeun Kim , Hui Ren , Peng Guo , Abder-Rahman Ali , Patrick Zhang , Kyungsang Kim , Xiang Li , Quanzheng Li

Video anomaly detection (VAD) -- commonly formulated as a multiple-instance learning problem in a weakly-supervised manner due to its labor-intensive nature -- is a challenging problem in video surveillance where the frames of anomaly need…

Computer Vision and Pattern Recognition · Computer Science 2023-07-06 Hyekang Kevin Joo , Khoa Vo , Kashu Yamazaki , Ngan Le

Currently, low-light conditions present a significant challenge for machine cognition. In this paper, rather than optimizing models by assuming that human and machine cognition are correlated, we use zero-reference low-light enhancement to…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Igor Morawski , Kai He , Shusil Dangi , Winston H. Hsu

The essence of unsupervised anomaly detection is to learn the compact distribution of normal samples and detect outliers as anomalies in testing. Meanwhile, the anomalies in real-world are usually subtle and fine-grained in a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Ye Zheng , Xiang Wang , Rui Deng , Tianpeng Bao , Rui Zhao , Liwei Wu

The application of zero-shot learning in computer vision has been revolutionized by the use of image-text matching models. The most notable example, CLIP, has been widely used for both zero-shot classification and guiding generative models…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Roni Paiss , Hila Chefer , Lior Wolf

Adapting CLIP for anomaly detection on unseen objects has shown strong potential in a zero-shot manner. However, existing methods typically rely on a single textual space to align with visual semantics across diverse objects and domains.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Qihang Zhou , Binbin Gao , Guansong Pang , Xin Wang , Jiming Chen , Shibo He

The global challenge in chest radiograph X-ray (CXR) abnormalities often being misdiagnosed is primarily associated with perceptual errors, where healthcare providers struggle to accurately identify the location of abnormalities, rather…

Image and Video Processing · Electrical Eng. & Systems 2023-11-06 Sanskriti Singh

An increasing number of public datasets have shown a marked impact on automated organ segmentation and tumor detection. However, due to the small size and partially labeled problem of each dataset, as well as a limited investigation of…

Image and Video Processing · Electrical Eng. & Systems 2024-06-27 Jie Liu , Yixiao Zhang , Jie-Neng Chen , Junfei Xiao , Yongyi Lu , Bennett A. Landman , Yixuan Yuan , Alan Yuille , Yucheng Tang , Zongwei Zhou

Visual anomaly classification and segmentation are vital for automating industrial quality inspection. The focus of prior research in the field has been on training custom models for each quality inspection task, which requires…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Jongheon Jeong , Yang Zou , Taewan Kim , Dongqing Zhang , Avinash Ravichandran , Onkar Dabeer