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Deep convolutional neural networks require large amounts of labeled data samples. For many real-world applications, this is a major limitation which is commonly treated by augmentation methods. In this work, we address the problem of…

计算机视觉与模式识别 · 计算机科学 2022-08-01 Christoph Reinders , Frederik Schubert , Bodo Rosenhahn

Detecting test-time distribution shift has emerged as a key capability for safely deployed machine learning models, with the question being tackled under various guises in recent years. In this paper, we aim to provide a consolidated view…

计算机视觉与模式识别 · 计算机科学 2024-09-02 Hongjun Wang , Sagar Vaze , Kai Han

The primary assumption of conventional supervised learning or classification is that the test samples are drawn from the same distribution as the training samples, which is called closed set learning or classification. In many practical…

计算机视觉与模式识别 · 计算机科学 2022-08-23 Sepideh Esmaeilpour , Lei Shu , Bing Liu

In this paper, we reveal the two sides of data augmentation: enhancements in closed-set recognition correlate with a significant decrease in open-set recognition. Through empirical investigation, we find that multi-sample-based…

计算机视觉与模式识别 · 计算机科学 2024-05-01 Yunbing Jia , Xiaoyu Kong , Fan Tang , Yixing Gao , Weiming Dong , Yi Yang

Traditional semi-supervised object detection methods assume a fixed set of object classes (in-distribution or ID classes) during training and deployment, which limits performance in real-world scenarios where unseen classes…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Garvita Allabadi , Ana Lucic , Siddarth Aananth , Tiffany Yang , Yu-Xiong Wang , Vikram Adve

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…

计算机视觉与模式识别 · 计算机科学 2019-10-08 Ryota Yoshihashi , Wen Shao , Rei Kawakami , Shaodi You , Makoto Iida , Takeshi Naemura

Data augmentation is widely used to enhance generalization in visual classification tasks. However, traditional methods struggle when source and target domains differ, as in domain adaptation, due to their inability to address domain gaps.…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Khawar Islam , Muhammad Zaigham Zaheer , Arif Mahmood , Karthik Nandakumar , Naveed Akhtar

Existing multi-view learning models struggle in open-set scenarios due to their implicit assumption of class completeness. Moreover, static view-induced biases, which arise from spurious view-label associations formed during training,…

计算机视觉与模式识别 · 计算机科学 2025-08-07 Zihan Fang , Zhiyong Xu , Lan Du , Shide Du , Zhiling Cai , Shiping Wang

In this paper, we tackle the problem of discovering new classes in unlabeled visual data given labeled data from disjoint classes. Existing methods typically first pre-train a model with labeled data, and then identify new classes in…

计算机视觉与模式识别 · 计算机科学 2020-04-14 Zhun Zhong , Linchao Zhu , Zhiming Luo , Shaozi Li , Yi Yang , Nicu Sebe

A desirable open world recognition (OWR) system requires performing three tasks: (1) Open set recognition (OSR), i.e., classifying the known (classes seen during training) and rejecting the unknown (unseen$/$novel classes) online; (2)…

计算机视觉与模式识别 · 计算机科学 2023-08-15 Fulin Gao , Weimin Zhong , Zhixing Cao , Xin Peng , Zhi Li

Data augmentation improves the generalization power of deep learning models by synthesizing more training samples. Sample-mixing is a popular data augmentation approach that creates additional data by combining existing samples. Recent…

计算机视觉与模式识别 · 计算机科学 2024-03-20 Tsz-Him Cheung , Dit-Yan Yeung

Recent advancements in deep learning have greatly enhanced 3D object recognition, but most models are limited to closed-set scenarios, unable to handle unknown samples in real-world applications. Open-set recognition (OSR) addresses this…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Jinfeng Xu , Xianzhi Li , Yuan Tang , Xu Han , Qiao Yu , Yixue Hao , Long Hu , Min Chen

Online Class-Incremental (OCI) learning has sparked new approaches to expand the previously trained model knowledge from sequentially arriving data streams with new classes. Unfortunately, OCI learning can suffer from catastrophic…

机器学习 · 计算机科学 2023-03-15 Yunfeng Fan , Wenchao Xu , Haozhao Wang , Jiaqi Zhu , Junxiao Wang , Song Guo

Current closed-set instance segmentation models rely on pre-defined class labels for each mask during training and evaluation, largely limiting their ability to detect novel objects. Open-world instance segmentation (OWIS) models address…

计算机视觉与模式识别 · 计算机科学 2023-08-15 Muzhi Zhu , Hengtao Li , Hao Chen , Chengxiang Fan , Weian Mao , Chenchen Jing , Yifan Liu , Chunhua Shen

Land cover classification of satellite imagery is an important step toward analyzing the Earth's surface. Existing models assume a closed-set setting where both the training and testing classes belong to the same label set. However, due to…

计算机视觉与模式识别 · 计算机科学 2020-07-22 Razieh Kaviani Baghbaderani , Ying Qu , Hairong Qi , Craig Stutts

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…

计算机视觉与模式识别 · 计算机科学 2025-01-07 Xu Yin , Fei Pan , Guoyuan An , Yuchi Huo , Zixuan Xie , Sung-Eui Yoon

Training deep neural networks requires datasets with a large number of annotated examples. The collection and annotation of these datasets is not only extremely expensive but also faces legal and privacy problems. These factors are a…

计算机视觉与模式识别 · 计算机科学 2025-01-17 Christoph Reinders , Frederik Schubert , Bodo Rosenhahn

Despite the remarkable progress in generative technology, the Janus-faced issues of intellectual property protection and malicious content supervision have arisen. Efforts have been paid to manage synthetic images by attributing them to a…

计算机视觉与模式识别 · 计算机科学 2023-03-14 Tianyun Yang , Danding Wang , Fan Tang , Xinying Zhao , Juan Cao , Sheng Tang

If an unknown example that is not seen during training appears, most recognition systems usually produce overgeneralized results and determine that the example belongs to one of the known classes. To address this problem,…

计算机视觉与模式识别 · 计算机科学 2021-03-25 Jaeyeon Jang , Chang Ouk Kim

Current state-of-the-art Wildlife classification models are trained under the closed world setting. When exposed to unknown classes, they remain overconfident in their predictions. Open-set Recognition (OSR) aims to classify known classes…

计算机视觉与模式识别 · 计算机科学 2025-10-21 Jiahao Huo , Mufhumudzi Muthivhi , Terence L. van Zyl , Fredrik Gustafsson