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In this paper, we tackle the detection of out-of-distribution (OOD) objects in semantic segmentation. By analyzing the literature, we found that current methods are either accurate or fast but not both which limits their usability in real…

Computer Vision and Pattern Recognition · Computer Science 2021-08-04 Victor Besnier , Andrei Bursuc , David Picard , Alexandre Briot

Neural networks (NNs) are widely used for object classification in autonomous driving. However, NNs can fail on input data not well represented by the training dataset, known as out-of-distribution (OOD) data. A mechanism to detect OOD…

Computer Vision and Pattern Recognition · Computer Science 2021-09-07 Julia Nitsch , Masha Itkina , Ransalu Senanayake , Juan Nieto , Max Schmidt , Roland Siegwart , Mykel J. Kochenderfer , Cesar Cadena

Deep neural networks (DNNs), especially convolutional neural networks, have achieved superior performance on image classification tasks. However, such performance is only guaranteed if the input to a trained model is similar to the training…

Computer Vision and Pattern Recognition · Computer Science 2021-01-28 Liang Liang , Linhai Ma , Linchen Qian , Jiasong Chen

Despite recent advancements in out-of-distribution (OOD) detection, most current studies assume a class-balanced in-distribution training dataset, which is rarely the case in real-world scenarios. This paper addresses the challenging task…

Machine Learning · Computer Science 2023-12-15 Tong Wei , Bo-Lin Wang , Min-Ling Zhang

Open-world classification systems should discern out-of-distribution (OOD) data whose labels deviate from those of in-distribution (ID) cases, motivating recent studies in OOD detection. Advanced works, despite their promising progress, may…

Machine Learning · Computer Science 2023-12-27 Qizhou Wang , Zhen Fang , Yonggang Zhang , Feng Liu , Yixuan Li , Bo Han

Out-of-distribution (OOD) detection is crucial when deploying deep neural networks in the real world to ensure the reliability and safety of their applications. One main challenge in OOD detection is that neural network models often produce…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Jinlun Ye , Zhuohao Sun , Yiqiao Qiu , Qiu Li , Zhijun Tan , Ruixuan Wang

As language models become more general purpose, increased attention needs to be paid to detecting out-of-distribution (OOD) instances, i.e., those not belonging to any of the distributions seen during training. Existing methods for…

Machine Learning · Computer Science 2024-07-19 Aryan Gulati , Xingjian Dong , Carlos Hurtado , Sarath Shekkizhar , Swabha Swayamdipta , Antonio Ortega

The superior performance of object detectors is often established under the condition that the test samples are in the same distribution as the training data. However, in many practical applications, out-of-distribution (OOD) instances are…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Tianhao Zhang , Shenglin Wang , Nidhal Bouaynaya , Radu Calinescu , Lyudmila Mihaylova

Out-of-distribution (OOD) detection is a critical task for deploying machine learning models in the open world. Distance-based methods have demonstrated promise, where testing samples are detected as OOD if they are relatively far away from…

Machine Learning · Computer Science 2022-12-09 Yiyou Sun , Yifei Ming , Xiaojin Zhu , Yixuan Li

Out of distribution (OOD) detection is a crucial part of making machine learning systems robust. The ImageNet-O dataset is an important tool in testing the robustness of ImageNet trained deep neural networks that are widely used across a…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Anugya Srivastava , Shriya Jain , Mugdha Thigle

The existing continual learning methods are mainly focused on fully-supervised scenarios and are still not able to take advantage of unlabeled data available in the environment. Some recent works tried to investigate semi-supervised…

In monocular depth estimation, uncertainty estimation approaches mainly target the data uncertainty introduced by image noise. In contrast to prior work, we address the uncertainty due to lack of knowledge, which is relevant for the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-14 Julia Hornauer , Adrian Holzbock , Vasileios Belagiannis

Robust out-of-distribution (OOD) detection is an indispensable component of modern artificial intelligence (AI) systems, especially in safety-critical applications where models must identify inputs from unfamiliar classes not seen during…

Machine Learning · Computer Science 2025-09-09 Tarhib Al Azad , Shahana Ibrahim

Deep Learning heavily depends on large labeled datasets which limits further improvements. While unlabeled data is available in large amounts, in particular in image recognition, it does not fulfill the closed world assumption of…

Machine Learning · Computer Science 2020-12-24 Maximilian Augustin , Matthias Hein

Out-of-distribution (OOD) detection is a task that detects OOD samples during inference to ensure the safety of deployed models. However, conventional benchmarks have reached performance saturation, making it difficult to compare recent OOD…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Shiho Noda , Atsuyuki Miyai , Qing Yu , Go Irie , Kiyoharu Aizawa

To facilitate reliable deployments of autonomous robots in the real world, Out-of-Distribution (OOD) detection capabilities are often required. A powerful approach for OOD detection is based on density estimation with Normalizing Flows…

Robotics · Computer Science 2023-11-14 Jianxiang Feng , Jongseok Lee , Simon Geisler , Stephan Gunnemann , Rudolph Triebel

Deep neural networks are known to achieve superior results in classification tasks. However, it has been recently shown that they are incapable to detect examples that are generated by a distribution which is different than the one they…

Machine Learning · Computer Science 2019-12-09 Aristotelis-Angelos Papadopoulos , Nazim Shaikh , Mohammad Reza Rajati

Autonomous agents for cyber applications take advantage of modern defense techniques by adopting intelligent agents with conventional and learning-enabled components. These intelligent agents are trained via reinforcement learning (RL)…

Machine Learning · Computer Science 2024-12-05 Ankita Samaddar , Nicholas Potteiger , Xenofon Koutsoukos

Out-of-distribution (OoD) detection is a natural downstream task for deep generative models, due to their ability to learn the input probability distribution. There are mainly two classes of approaches for OoD detection using deep…

Machine Learning · Computer Science 2019-07-11 Yujia Huang , Sihui Dai , Tan Nguyen , Richard G. Baraniuk , Anima Anandkumar

Improving the reliability of deployed machine learning systems often involves developing methods to detect out-of-distribution (OOD) inputs. However, existing research often narrowly focuses on samples from classes that are absent from the…

Machine Learning · Computer Science 2024-12-11 Charles Guille-Escuret , Pierre-André Noël , Ioannis Mitliagkas , David Vazquez , Joao Monteiro