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Estimating the number of clusters and cluster structures in unlabeled, complex, and high-dimensional datasets (like images) is challenging for traditional clustering algorithms. In recent years, a matrix reordering-based algorithm called…

While deep learning, including Convolutional Neural Networks (CNNs) and Vision Transformers (ViTs), has significantly advanced classification performance, its typical reliance on extensive annotated datasets presents a major obstacle in…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Matheus Vinícius Todescato , Joel Luís Carbonera

Several unsupervised and self-supervised approaches have been developed in recent years to learn visual features from large-scale unlabeled datasets. Their main drawback however is that these methods are hardly able to recognize visual…

Computer Vision and Pattern Recognition · Computer Science 2022-06-08 Alessandra Alfani , Federico Becattini , Lorenzo Seidenari , Alberto Del Bimbo

This paper proposes a classification network to image semantic retrieval (NIST) framework to counter the image retrieval challenge. Our approach leverages the successful classification network GoogleNet based on Convolutional Neural…

Computer Vision and Pattern Recognition · Computer Science 2016-07-05 Le Dong , Xiuyuan Chen , Mengdie Mao , Qianni Zhang

High-quality labeled datasets are essential for deep learning. Traditional manual annotation methods are not only costly and inefficient but also pose challenges in specialized domains where expert knowledge is needed. Self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2023-11-16 Zhaocong liu , Fa Zhang , Lin Cheng , Huanxi Deng , Xiaoyan Yang , Zhenyu Zhang , Chichun Zhou

This paper presents a semi-supervised learning framework for a customized semantic segmentation task using multiview image streams. A key challenge of the customized task lies in the limited accessibility of the labeled data due to the…

Computer Vision and Pattern Recognition · Computer Science 2018-12-06 Yuan Yao , Hyun Soo Park

Most of the approaches for discovering visual attributes in images demand significant supervision, which is cumbersome to obtain. In this paper, we aim to discover visual attributes in a weakly supervised setting that is commonly…

Computer Vision and Pattern Recognition · Computer Science 2015-04-21 Sukrit Shankar , Vikas K. Garg , Roberto Cipolla

Since the rise of deep learning, many computer vision tasks have seen significant advancements. However, the downside of deep learning is that it is very data-hungry. Especially for segmentation problems, training a deep neural net requires…

Computer Vision and Pattern Recognition · Computer Science 2021-10-13 Robby Neven , Davy Neven , Bert De Brabandere , Marc Proesmans , Toon Goedemé

Deep neural networks have been able to outperform humans in some cases like image recognition and image classification. However, with the emergence of various novel categories, the ability to continuously widen the learning capability of…

Computer Vision and Pattern Recognition · Computer Science 2020-07-31 Nihar Bendre , Hugo Terashima Marín , Peyman Najafirad

In visual recognition tasks, such as image classification, unsupervised learning exploits cheap unlabeled data and can help to solve these tasks more efficiently. We show that the recursive autoconvolution operator, adopted from physics,…

Computer Vision and Pattern Recognition · Computer Science 2017-03-28 Boris Knyazev , Erhardt Barth , Thomas Martinetz

It is well known that for some tasks, labeled data sets may be hard to gather. Therefore, we wished to tackle here the problem of having insufficient training data. We examined learning methods from unlabeled data after an initial training…

Machine Learning · Computer Science 2018-04-06 Gal Hyams , Daniel Greenfeld , Dor Bank

Image alignment across domains has recently become one of the realistic and popular topics in the research community. In this problem, a deep learning-based image alignment method is usually trained on an available largescale database.…

Computer Vision and Pattern Recognition · Computer Science 2019-06-03 Thanh-Dat Truong , Khoa Luu , Chi Nhan Duong , Ngan Le , Minh-Triet Tran

Despite significant advances in clustering methods in recent years, the outcome of clustering of a natural image dataset is still unsatisfactory due to two important drawbacks. Firstly, clustering of images needs a good feature…

Computer Vision and Pattern Recognition · Computer Science 2019-01-23 Dipanjan Das , Ratul Ghosh , Brojeshwar Bhowmick

In many real-life tasks of application of supervised learning approaches, all the training data are not available at the same time. The examples are lifelong image classification or recognition of environmental objects during interaction of…

Machine Learning · Computer Science 2020-06-15 Miltiadis Poursanidis , Jenny Benois-Pineau , Akka Zemmari , Boris Mansenca , Aymar de Rugy

The advancement of deep learning has greatly improved supervised image classification. However, labeling data is costly, prompting research into unsupervised learning methods such as contrastive learning. In real-world scenarios, fully…

Artificial Intelligence · Computer Science 2026-01-09 Shogo Nakayama , Masahiro Okuda

Deep learning models heavily rely on large scale annotated datasets for training. Unfortunately, datasets cannot capture the infinite variability of the real world, thus neural networks are inherently limited by the restricted visual and…

Computer Vision and Pattern Recognition · Computer Science 2020-12-17 Massimiliano Mancini

Recently, some works integrate SSL techniques into deep clustering frameworks to enhance image clustering performance. However, they all need pretraining, clustering learning, or a trained clustering model as prerequisites, limiting the…

Computer Vision and Pattern Recognition · Computer Science 2025-09-26 Yue Duan , Lei Qi , Yinghuan Shi , Yang Gao

This paper presents the first attempt to learn semantic boundary detection using image-level class labels as supervision. Our method starts by estimating coarse areas of object classes through attentions drawn by an image classification…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Namyup Kim , Sehyun Hwang , Suha Kwak

Class labels used for machine learning are relatable to each other, with certain class labels being more similar to each other than others (e.g. images of cats and dogs are more similar to each other than those of cats and cars). Such…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Gautam Rajendrakumar Gare , John Michael Galeotti

We investigate the scalable image classification problem with a large number of categories. Hierarchical visual data structures are helpful for improving the efficiency and performance of large-scale multi-class classification. We propose a…

Computer Vision and Pattern Recognition · Computer Science 2017-09-18 Yanyun Qu , Li Lin , Fumin Shen , Chang Lu , Yang Wu , Yuan Xie , Dacheng Tao