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Open-set image recognition (OSR) aims to both classify known-class samples and identify unknown-class samples in the testing set, which supports robust classifiers in many realistic applications, such as autonomous driving, medical…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Jiayin Sun , Qiulei Dong

Existing synthetic aperture radar automatic target recognition (SAR ATR) methods have been effective for the classification of seen target classes. However, it is more meaningful and challenging to distinguish the unseen target classes,…

Image and Video Processing · Electrical Eng. & Systems 2023-08-22 Chenwei Wang , Siyi Luo , Jifang Pei , Xiaoyu Liu , Yulin Huang , Yin Zhang , Jianyu Yang

Open Set Recognition (OSR) is about dealing with unknown situations that were not learned by the models during training. In this paper, we provide a survey of existing works about OSR and distinguish their respective advantages and…

Computer Vision and Pattern Recognition · Computer Science 2022-03-16 Atefeh Mahdavi , Marco Carvalho

Raman spectroscopy is a label-free, chemically specific optical technique which provides detailed information about the chemical composition and structure of the excited analyte. Because of this, there is growing research interest in…

Neural networks for image classification tasks assume that any given image during inference belongs to one of the training classes. This closed-set assumption is challenged in real-world applications where models may encounter inputs of…

Computer Vision and Pattern Recognition · Computer Science 2022-06-17 Jinsol Lee , Ghassan AlRegib

The extensive use of pesticides and synthetic dyes poses critical threats to food safety, human health, and environmental sustainability, necessitating rapid and reliable detection methods. Raman spectroscopy offers molecularly specific…

Materials Science · Physics 2025-11-18 Quach Thi Thai Binh , Thuan Phuoc , Xuan Hai , Thang Bach Phan , Vu Thi Hanh Thu , Nguyen Tuan Hung

Raman spectroscopy is widely used across scientific domains to characterize the chemical composition of samples in a non-destructive, label-free manner. Many applications entail the unmixing of signals from mixtures of molecular species to…

Raman spectroscopy, a photonic modality based on the inelastic backscattering of coherent light, is a valuable asset to the intraoperative sensing space, offering non-ionizing potential and highly-specific molecular fingerprint-like…

Image and Video Processing · Electrical Eng. & Systems 2024-01-18 Ashutosh Raman , Ren A. Odion , Kent K. Yamamoto , Weston Ross , Tuan Vo-Dinh , Patrick J. Codd

Raman spectroscopy enables non-destructive, label-free imaging with unprecedented molecular contrast but is limited by slow data acquisition, largely preventing high-throughput imaging applications. Here, we present a comprehensive…

Image and Video Processing · Electrical Eng. & Systems 2021-12-02 Conor C. Horgan , Magnus Jensen , Anika Nagelkerke , Jean-Phillipe St-Pierre , Tom Vercauteren , Molly M. Stevens , Mads S. Bergholt

Raman spectroscopy's capability to provide meaningful composition predictions is heavily reliant on a pre-processing step to remove insignificant spectral variation. This is crucial in biofluid analysis. Widespread adoption of diagnostics…

Signal Processing · Electrical Eng. & Systems 2019-04-05 Emily E Storey , Amr S. Helmy

Fueled by deep learning, computer-aided diagnosis achieves huge advances. However, out of controlled lab environments, algorithms could face multiple challenges. Open set recognition (OSR), as an important one, states that categories unseen…

Computer Vision and Pattern Recognition · Computer Science 2023-07-24 Mingyuan Liu , Lu Xu , Jicong Zhang

Open set recognition (OSR) is a critical aspect of machine learning, addressing the challenge of detecting novel classes during inference. Within the realm of deep learning, neural classifiers trained on a closed set of data typically…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Jiawen Xu , Margret Keuper

Raman spectroscopy can provide insight into the molecular composition of cells and tissue. Consequently, it can be used as a powerful diagnostic tool, e.g. to help identify changes in molecular contents with the onset of disease. But robust…

Medical Physics · Physics 2023-08-02 Ciaran Bench , Mads S. Bergholt , Mohamed Ali al-Badri

Raman spectroscopy enables non-destructive, label-free molecular analysis with high specificity, making it a powerful tool for biomedical diagnostics. However, its application to biological tissues is challenged by inherently weak Raman…

Computer Vision and Pattern Recognition · Computer Science 2025-12-22 Mengkun Chen , Sanidhya D. Tripathi , James W. Tunnell

Raman spectroscopy is an important tool in the study of vibrational properties and composition of molecules, peptides and even proteins. Raman spectra can be simulated based on the change of the electronic polarizability with vibrations,…

Computational Physics · Physics 2024-04-30 Ethan Berger , Juha Niemelä , Outi Lampela , André H. Juffer , Hannu-Pekka Komsa

Raman spectroscopy provides spectral information related to the specific molecular structures of substances and has been well established as a powerful tool for studying biological tissues and diagnosing diseases. This article reviews…

Open-set face recognition characterizes a scenario where unknown individuals, unseen during the training and enrollment stages, appear on operation time. This work concentrates on watchlists, an open-set task that is expected to operate at…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Rafael Henrique Vareto , Yu Linghu , Terrance E. Boult , William Robson Schwartz , Manuel Günther

Raman spectroscopy is a well established tool for the analysis of vibration spectra, which then allow for the determination of individual substances in a chemical sample, or for their phase transitions. In the…

Numerical Analysis · Mathematics 2020-07-15 Konstantin Fackeldey , Jonas Röhm , Amir Niknejad , Surahit Chewle , Marcus Weber

Recent efforts in deploying Deep Neural Networks for object detection in real world applications, such as autonomous driving, assume that all relevant object classes have been observed during training. Quantifying the performance of these…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Yimeng Li , Jana Kosecka

Existing open-set recognition (OSR) studies typically assume that each image contains only one class label, with the unknown test set (negative) having a disjoint label space from the known test set (positive), a scenario referred to as…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Xu Yin , Fei Pan , Guoyuan An , Yuchi Huo , Zixuan Xie , Sung-Eui Yoon