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We tackle the problem of discovering novel classes in an image collection given labelled examples of other classes. This setting is similar to semi-supervised learning, but significantly harder because there are no labelled examples for the…

Computer Vision and Pattern Recognition · Computer Science 2020-02-14 Kai Han , Sylvestre-Alvise Rebuffi , Sebastien Ehrhardt , Andrea Vedaldi , Andrew Zisserman

We consider the problem of discovering novel object categories in an image collection. While these images are unlabelled, we also assume prior knowledge of related but different image classes. We use such prior knowledge to reduce the…

Computer Vision and Pattern Recognition · Computer Science 2019-08-28 Kai Han , Andrea Vedaldi , Andrew Zisserman

This paper studies the problem of novel category discovery on single- and multi-modal data with labels from different but relevant categories. We present a generic, end-to-end framework to jointly learn a reliable representation and assign…

Computer Vision and Pattern Recognition · Computer Science 2021-10-18 Xuhui Jia , Kai Han , Yukun Zhu , Bradley Green

We address the problem of learning new classes for semantic segmentation models from few examples, which is challenging because of the following two reasons. Firstly, it is difficult to learn from limited novel data to capture the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Chengjia Jiang , Tao Wang , Sien Li , Jinyang Wang , Shirui Wang , Antonios Antoniou

We tackle the problem of discovering novel classes in an image collection given labelled examples of other classes. We present a new approach called AutoNovel to address this problem by combining three ideas: (1) we suggest that the common…

Computer Vision and Pattern Recognition · Computer Science 2021-06-30 Kai Han , Sylvestre-Alvise Rebuffi , Sébastien Ehrhardt , Andrea Vedaldi , Andrew Zisserman

Automatically discovering image categories in unlabeled natural images is one of the important goals of unsupervised learning. However, the task is challenging and even human beings define visual categories based on a large amount of prior…

Computer Vision and Pattern Recognition · Computer Science 2016-12-06 Yen-Chang Hsu , Zhaoyang Lv , Zsolt Kira

Category discovery methods aim to find novel categories in unlabeled visual data. At training time, a set of labeled and unlabeled images are provided, where the labels correspond to the categories present in the images. The labeled data…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Bingchen Zhao , Nico Lang , Serge Belongie , Oisin Mac Aodha

Existing deep learning models have achieved promising performance in recognizing skin diseases from dermoscopic images. However, these models can only recognize samples from predefined categories, when they are deployed in the clinic, data…

Computer Vision and Pattern Recognition · Computer Science 2023-09-29 Wei Feng , Lie Ju , Lin Wang , Kaimin Song , Zongyuan Ge

In this paper, we consider a highly general image recognition setting wherein, given a labelled and unlabelled set of images, the task is to categorize all images in the unlabelled set. Here, the unlabelled images may come from labelled…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Sagar Vaze , Kai Han , Andrea Vedaldi , Andrew Zisserman

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…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Zhun Zhong , Linchao Zhu , Zhiming Luo , Shaozi Li , Yi Yang , Nicu Sebe

Identifying labels that did not appear during training, known as multi-label zero-shot learning, is a non-trivial task in computer vision. To this end, recent studies have attempted to explore the multi-modal knowledge of vision-language…

Computer Vision and Pattern Recognition · Computer Science 2024-01-03 Xuelin Zhu , Jian Liu , Dongqi Tang , Jiawei Ge , Weijia Liu , Bo Liu , Jiuxin Cao

Novel class discovery (NCD) aims to infer novel categories in an unlabeled dataset leveraging prior knowledge of a labeled set comprising disjoint but related classes. Existing research focuses primarily on utilizing the labeled set at the…

Computer Vision and Pattern Recognition · Computer Science 2023-01-30 Ziyun Li , Jona Otholt , Ben Dai , Di hu , Christoph Meinel , Haojin Yang

We tackle the novel class discovery problem, aiming to discover novel classes in unlabeled data based on labeled data from seen classes. The main challenge is to transfer knowledge contained in the seen classes to unseen ones. Previous…

Computer Vision and Pattern Recognition · Computer Science 2022-11-09 Chuyu Zhang , Chuanyang Hu , Ruijie Xu , Zhitong Gao , Qian He , Xuming He

Novel Categories Discovery (NCD) aims to cluster novel data based on the class semantics of known classes using the open-world partial class space annotated dataset. As an alternative to the traditional pseudo-labeling-based approaches, we…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Zahid Hasan , Abu Zaher Md Faridee , Masud Ahmed , Sanjay Purushotham , Heesung Kwon , Hyungtae Lee , Nirmalya Roy

Multi-label image classification is a fundamental but challenging task towards general visual understanding. Existing methods found the region-level cues (e.g., features from RoIs) can facilitate multi-label classification. Nevertheless,…

Computer Vision and Pattern Recognition · Computer Science 2019-02-22 Yongcheng Liu , Lu Sheng , Jing Shao , Junjie Yan , Shiming Xiang , Chunhong Pan

We tackle object category discovery, which is the problem of discovering and localizing novel objects in a large unlabeled dataset. While existing methods show results on datasets with less cluttered scenes and fewer object instances per…

Computer Vision and Pattern Recognition · Computer Science 2021-09-17 Sai Saketh Rambhatla , Rama Chellappa , Abhinav Shrivastava

Recent advances in deep learning have significantly improved the performance of various computer vision applications. However, discovering novel categories in an incremental learning scenario remains a challenging problem due to the lack of…

Computer Vision and Pattern Recognition · Computer Science 2023-11-03 Hyungmin Kim , Sungho Suh , Daehwan Kim , Daun Jeong , Hansang Cho , Junmo Kim

Visual recognition tasks are often limited to dealing with a small subset of classes simply because the labels for the remaining classes are unavailable. We are interested in identifying novel concepts in a dataset through representation…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Geeho Kim , Junoh Kang , Bohyung Han

Due to the costliness of labelled data in real-world applications, semi-supervised learning, underpinned by pseudo labelling, is an appealing solution. However, handling confusing samples is nontrivial: discarding valuable confusing samples…

Computer Vision and Pattern Recognition · Computer Science 2024-02-13 Changrui Chen , Jungong Han , Kurt Debattista

We introduce a new setting of Novel Class Discovery in Semantic Segmentation (NCDSS), which aims at segmenting unlabeled images containing new classes given prior knowledge from a labeled set of disjoint classes. In contrast to existing…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Yuyang Zhao , Zhun Zhong , Nicu Sebe , Gim Hee Lee
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