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Out-of-distribution (OOD) detection is critical for deploying image classifiers in safety-sensitive environments, yet existing detectors often struggle when OOD samples are semantically similar to the in-distribution (ID) classes. We…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Yuanchao Wang , Tian Qin , Eduardo Valle , Bruno Abrahao

The combination of the Internet of Things and the Edge Computing gives many opportunities to support innovative applications close to end users. Numerous devices present in both infrastructures can collect data upon which various processing…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-03-02 Kostas Kolomvatsos , Christos Anagnostopoulos

Perception datasets for agriculture are limited both in quantity and diversity which hinders effective training of supervised learning approaches. Self-supervised learning techniques alleviate this problem, however, existing methods are not…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Julia Hindel , Nikhil Gosala , Kevin Bregler , Abhinav Valada

In recent years, three-dimensional point clouds are used increasingly to document natural environments. Each dataset contains a diverse set of objects, at varying shapes and sizes, distributed throughout the data and intricately intertwined…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Reuma Arav , Dennis Wittich , Franz Rottensteiner

As 3D perception problems grow in popularity and the need for large-scale labeled datasets for LiDAR semantic segmentation increase, new methods arise that aim to reduce the necessity for dense annotations by employing weakly-supervised…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Ozan Unal , Dengxin Dai , Lukas Hoyer , Yigit Baran Can , Luc Van Gool

In this paper, we propose a method for keypoint discovery from a 2D image using image-level supervision. Recent works on unsupervised keypoint discovery reliably discover keypoints of aligned instances. However, when the target instances…

Computer Vision and Pattern Recognition · Computer Science 2021-09-29 Serim Ryou , Pietro Perona

Learnable keypoint detectors and descriptors are beginning to outperform classical hand-crafted feature extraction methods. Recent studies on self-supervised learning of visual representations have driven the increasing performance of…

Computer Vision and Pattern Recognition · Computer Science 2022-07-12 Henrique Siqueira , Patrick Ruhkamp , Ibrahim Halfaoui , Markus Karmann , Onay Urfalioglu

Attention mechanisms are widely used in salient object detection models based on deep learning, which can effectively promote the extraction and utilization of useful information by neural networks. However, most of the existing attention…

Computer Vision and Pattern Recognition · Computer Science 2019-07-18 Shiping Zhu , Lanyun Zhu

Deep Learning approaches have brought solutions, with impressive performance, to general classification problems where wealthy of annotated data are provided for training. In contrast, less progress has been made in continual learning of a…

Computer Vision and Pattern Recognition · Computer Science 2020-12-18 Eric Lopez-Lopez , Carlos V. Regueiro , Xose M. Pardo

We propose PermaKey, a novel approach to representation learning based on object keypoints. It leverages the predictability of local image regions from spatial neighborhoods to identify salient regions that correspond to object parts, which…

Computer Vision and Pattern Recognition · Computer Science 2021-03-09 Anand Gopalakrishnan , Sjoerd van Steenkiste , Jürgen Schmidhuber

Detecting out-of-distribution (OOD) samples is essential when deploying machine learning models in open-world scenarios. Zero-shot OOD detection, requiring no training on in-distribution (ID) data, has been possible with the advent of…

Machine Learning · Computer Science 2024-06-04 Chentao Cao , Zhun Zhong , Zhanke Zhou , Yang Liu , Tongliang Liu , Bo Han

Keypoints are what enable Structure-from-Motion (SfM) systems to scale to thousands of images. However, designing a keypoint detection objective is a non-trivial task, as SfM is non-differentiable. Typically, an auxiliary objective…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Johan Edstedt , Georg Bökman , Mårten Wadenbäck , Michael Felsberg

Computer aided diagnosis (CAD) systems are designed to assist clinicians in various tasks, including highlighting abnormal regions in a medical image. A common approach consists in training a voxel-level binary classifier on a set of…

Computer Vision and Pattern Recognition · Computer Science 2018-05-07 Z. Alaverdyan , C. Lartizien

Outlier detection is the identification of points in a dataset that do not conform to the norm. Outlier detection is highly sensitive to the choice of the detection algorithm and the feature subspace used by the algorithm. Extracting…

Artificial Intelligence · Computer Science 2017-05-18 Yanjie Fu , Charu Aggarwal , Srinivasan Parthasarathy , Deepak S. Turaga , Hui Xiong

Unsupervised object discovery (UOD) refers to the task of discriminating the whole region of objects from the background within a scene without relying on labeled datasets, which benefits the task of bounding-box-level localization and…

Computer Vision and Pattern Recognition · Computer Science 2023-07-10 Yunqiu Lv , Jing Zhang , Nick Barnes , Yuchao Dai

Current techniques in Visual Simultaneous Localization and Mapping (VSLAM) estimate camera displacement by comparing image features of consecutive scenes. These algorithms depend on scene continuity, hence requires frequent camera inputs.…

Robotics · Computer Science 2024-01-25 Mingyang Li , Yue Ma , Qinru Qiu

This paper presents a self-supervised framework for training interest point detectors and descriptors suitable for a large number of multiple-view geometry problems in computer vision. As opposed to patch-based neural networks, our…

Computer Vision and Pattern Recognition · Computer Science 2018-04-20 Daniel DeTone , Tomasz Malisiewicz , Andrew Rabinovich

Unsupervised salient object detection aims to detect salient objects without using supervision signals eliminating the tedious task of manually labeling salient objects. To improve training efficiency, end-to-end methods for USOD have been…

Computer Vision and Pattern Recognition · Computer Science 2023-10-17 Yicheng Song , Shuyong Gao , Haozhe Xing , Yiting Cheng , Yan Wang , Wenqiang Zhang

The annotation of 3D datasets is required for semantic-segmentation and object detection in scene understanding. In this paper we present a framework for the weakly supervision of a point clouds transformer that is used for 3D object…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Zuojin Tang , Bo Sun , Tongwei Ma , Daosheng Li , Zhenhui Xu

Self-Supervised Learning (SSL) has emerged as a promising approach in computer vision, enabling networks to learn meaningful representations from large unlabeled datasets. SSL methods fall into two main categories: instance discrimination…

Computer Vision and Pattern Recognition · Computer Science 2026-05-01 Alina Ciocarlan , Sidonie Lefebvre , Sylvie Le Hégarat-Mascle , Arnaud Woiselle