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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

Continual learning has traditionally focused on classifying either instances or classes, but real-world applications, such as robotics and self-driving cars, require models to handle both simultaneously. To mirror real-life scenarios, we…

Computer Vision and Pattern Recognition · Computer Science 2025-06-13 Melika Ayoughi , Mina Ghadimi Atigh , Mohammad Mahdi Derakhshani , Cees G. M. Snoek , Pascal Mettes , Paul Groth

How can we segment varying numbers of objects where each specific object represents its own separate class? To make the problem even more realistic, how can we add and delete classes on the fly without retraining or fine-tuning? This is the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Anas Gouda , Moritz Roidl

Object detection methods have witnessed impressive improvements in the last years thanks to the design of novel neural network architectures and the availability of large scale datasets. However, current methods have a significant…

Computer Vision and Pattern Recognition · Computer Science 2022-08-25 Dario Fontanel , Matteo Tarantino , Fabio Cermelli , Barbara Caputo

The aim of fine-grained recognition is to identify sub-ordinate categories in images like different species of birds. Existing works have confirmed that, in order to capture the subtle differences across the categories, automatic…

Computer Vision and Pattern Recognition · Computer Science 2017-03-30 Zhiqiang Shen , Yu-Gang Jiang , Dequan Wang , Xiangyang Xue

Building successful recommender systems requires uncovering the underlying dimensions that describe the properties of items as well as users' preferences toward them. In domains like clothing recommendation, explaining users' preferences…

Information Retrieval · Computer Science 2016-04-21 Ruining He , Chunbin Lin , Jianguo Wang , Julian McAuley

Out-Of-Distribution (OOD) detection is critical to deploy deep learning models in safety-critical applications. However, the inherent hierarchical concept structure of visual data, which is instrumental to OOD detection, is often poorly…

Computer Vision and Pattern Recognition · Computer Science 2024-09-26 Alvaro Gonzalez-Jimenez , Simone Lionetti , Dena Bazazian , Philippe Gottfrois , Fabian Gröger , Marc Pouly , Alexander Navarini

To fully understand the 3D context of a single image, a visual system must be able to segment both the visible and occluded regions of objects, while discerning their occlusion order. Ideally, the system should be able to handle any object…

Computer Vision and Pattern Recognition · Computer Science 2024-05-10 Jiayang Ao , Qiuhong Ke , Krista A. Ehinger

Image-text representation learning forms a cornerstone in vision-language models, where pairs of images and textual descriptions are contrastively aligned in a shared embedding space. Since visual and textual concepts are naturally…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Avik Pal , Max van Spengler , Guido Maria D'Amely di Melendugno , Alessandro Flaborea , Fabio Galasso , Pascal Mettes

Given an image set without any labels, our goal is to train a model that maps each image to a point in a feature space such that, not only proximity indicates visual similarity, but where it is located directly encodes how prototypical the…

Computer Vision and Pattern Recognition · Computer Science 2023-07-06 Yunhui Guo , Youren Zhang , Yubei Chen , Stella X. Yu

Most scenes in practical applications are dynamic scenes containing moving objects, so segmenting accurately moving objects is crucial for many computer vision applications. In order to efficiently segment out all moving objects in the…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Chenjie Wang , Chengyuan Li , Bin Luo

Open-set object recognition aims to identify if an object is from a class that has been encountered during training or not. To perform open-set object recognition accurately, a key challenge is how to reduce the reliance on…

Computer Vision and Pattern Recognition · Computer Science 2023-12-22 Haoxuan Qu , Xiaofei Hui , Yujun Cai , Jun Liu

Most of the existing recognition algorithms are proposed for closed set scenarios, where all categories are known beforehand. However, in practice, recognition is essentially an open set problem. There are categories we know called…

Computer Vision and Pattern Recognition · Computer Science 2020-01-14 Yu Shu , Yemin Shi , Yaowei Wang , Tiejun Huang , Yonghong Tian

Real-world knowledge is often organized as hierarchies such as product taxonomies, medical ontologies, and label trees, yet learning hierarchical representations is challenging due to asymmetric structure and noisy semantics. We introduce…

Machine Learning · Computer Science 2026-05-04 Sahil Mishra , Srinitish Srinivasan , Sourish Dasgupta , Tanmoy Chakraborty

Open-set classification is a problem of handling `unknown' classes that are not contained in the training dataset, whereas traditional classifiers assume that only known classes appear in the test environment. Existing open-set classifiers…

Computer Vision and Pattern Recognition · Computer Science 2019-10-08 Ryota Yoshihashi , Wen Shao , Rei Kawakami , Shaodi You , Makoto Iida , Takeshi Naemura

While visual object detection with deep learning has received much attention in the past decade, cases when heavy intra-class occlusions occur have not been studied thoroughly. In this work, we propose a Non-Maximum-Suppression (NMS)…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Chenhongyi Yang , Vitaly Ablavsky , Kaihong Wang , Qi Feng , Margrit Betke

Concealed object segmentation (COS) is a challenging task that involves localizing and segmenting those concealed objects that are visually blended with their surrounding environments. Despite achieving remarkable success, existing COS…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Fengyang Xiao , Pan Zhang , Chunming He , Runze Hu , Yutao Liu

The image annotation stage is a critical and often the most time-consuming part required for training and evaluating object detection and semantic segmentation models. Deployment of the existing models in novel environments often requires…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Yimeng Li , Navid Rajabi , Sulabh Shrestha , Md Alimoor Reza , Jana Kosecka

We consider a category-level perception problem, where one is given 2D or 3D sensor data picturing an object of a given category (e.g., a car), and has to reconstruct the 3D pose and shape of the object despite intra-class variability…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Jingnan Shi , Heng Yang , Luca Carlone

Existing scene understanding systems mainly focus on recognizing the visible parts of a scene, ignoring the intact appearance of physical objects in the real-world. Concurrently, image completion has aimed to create plausible appearance for…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Chuanxia Zheng , Duy-Son Dao , Guoxian Song , Tat-Jen Cham , Jianfei Cai