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Image tile-based approaches are popular in many image processing applications such as denoising (e.g., non-local means). A key step in their use is grouping the images into clusters, which usually proceeds iteratively splitting the images…

Image and Video Processing · Electrical Eng. & Systems 2025-12-09 Tharindu Wickremasinghe , Marco F. Duarte

This paper introduces {\em fusion subspace clustering}, a novel method to learn low-dimensional structures that approximate large scale yet highly incomplete data. The main idea is to assign each datum to a subspace of its own, and minimize…

Machine Learning · Computer Science 2022-05-24 Usman Mahmood , Daniel Pimentel-Alarcón

Can we automatically group images into semantically meaningful clusters when ground-truth annotations are absent? The task of unsupervised image classification remains an important, and open challenge in computer vision. Several recent…

Computer Vision and Pattern Recognition · Computer Science 2020-07-06 Wouter Van Gansbeke , Simon Vandenhende , Stamatios Georgoulis , Marc Proesmans , Luc Van Gool

Collecting annotated data for semantic segmentation is time-consuming and hard to scale up. In this paper, we for the first time propose a unified framework, termed as Multi-Dataset Pretraining, to take full advantage of the fragmented…

Computer Vision and Pattern Recognition · Computer Science 2021-06-09 Bowen Shi , Xiaopeng Zhang , Haohang Xu , Wenrui Dai , Junni Zou , Hongkai Xiong , Qi Tian

With rich temporal-spatial information, video-based person re-identification methods have shown broad prospects. Although tracklets can be easily obtained with ready-made tracking models, annotating identities is still expensive and…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Nanxing Meng , Qizao Wang , Bin Li , Xiangyang Xue

Automatic image annotation has been an important research topic in facilitating large scale image management and retrieval. Existing methods focus on learning image-tag correlation or correlation between tags to improve annotation accuracy.…

Computer Vision and Pattern Recognition · Computer Science 2018-01-01 Jiren Jin , Hideki Nakayama

We consider the problem of matrix completion with side information (\textit{inductive matrix completion}). In real-world applications many side-channel features are typically non-informative making feature selection an important part of the…

Machine Learning · Statistics 2018-10-09 Ivan Nazarov , Boris Shirokikh , Maria Burkina , Gennady Fedonin , Maxim Panov

Automated object detection has become increasingly valuable across diverse applications, yet efficient, high-quality annotation remains a persistent challenge. In this paper, we present the development and evaluation of a platform designed…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Sönke Tenckhoff , Mario Koddenbrock , Erik Rodner

Recent advances in data-centric artificial intelligence highlight inherent limitations in object recognition datasets. One of the primary issues stems from the semantic gap problem, which results in complex many-to-many mappings between…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Xiaolei Diao , Fausto Giunchiglia

Deep learning based salient object detection has recently achieved great success with its performance greatly outperforms any other unsupervised methods. However, annotating per-pixel saliency masks is a tedious and inefficient procedure.…

Computer Vision and Pattern Recognition · Computer Science 2018-03-20 Guanbin Li , Yuan Xie , Liang Lin

Semantic segmentation is the task of classifying each pixel in an image. Training a segmentation model achieves best results using annotated images, where each pixel is annotated with the corresponding class. When obtaining fine annotations…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Jort de Jong , Mike Holenderski

In this letter, we propose a novel semi-supervised subspace clustering method, which is able to simultaneously augment the initial supervisory information and construct a discriminative affinity matrix. By representing the limited amount of…

Computer Vision and Pattern Recognition · Computer Science 2023-01-05 Yuheng Jia , Guanxing Lu , Hui Liu , Junhui Hou

In this paper, we propose a simple algorithm to cluster nonnegative data lying in disjoint subspaces. We analyze its performance in relation to a certain measure of correlation between said subspaces. We use our clustering algorithm to…

Machine Learning · Statistics 2020-09-04 C. Strohmeier , D. Needell

Auto-annotation by ensemble of models is an efficient method of learning on unlabeled data. Wrong or inaccurate annotations generated by the ensemble may lead to performance degradation of the trained model. To deal with this problem we…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Dror Simon , Miriam Farber , Roman Goldenberg

Tagging is nowadays the most prevalent and practical way to make images searchable. However, in reality many manually-assigned tags are irrelevant to image content and hence are not reliable for applications. A lot of recent efforts have…

Information Retrieval · Computer Science 2013-07-31 Jingdong Wang , Jiazhen Zhou , Hao Xu , Tao Mei , Xian-Sheng Hua , Shipeng Li

In most image retrieval systems, images include various high-level semantics, called tags or annotations. Virtually all the state-of-the-art image annotation methods that handle imbalanced labeling are search-based techniques which are…

Computer Vision and Pattern Recognition · Computer Science 2023-04-19 Seyed Mahdi Roostaiyan , Mohammad Mehdi Hosseini , Mahya Mohammadi Kashani , S. Hamid Amiri

Pixel-level crack segmentation is widely studied due to its high impact on building and road inspections. While recent studies have made significant improvements in accuracy, they typically heavily depend on pixel-level crack annotations,…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Yuki Inoue , Hiroto Nagayoshi

Image annotation aims to annotate a given image with a variable number of class labels corresponding to diverse visual concepts. In this paper, we address two main issues in large-scale image annotation: 1) how to learn a rich feature…

Computer Vision and Pattern Recognition · Computer Science 2018-10-22 Yulei Niu , Zhiwu Lu , Ji-Rong Wen , Tao Xiang , Shih-Fu Chang

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

Deep convolutional neural networks have driven substantial advancements in the automatic understanding of images. Requiring a large collection of images and their associated annotations is one of the main bottlenecks limiting the adoption…

Computer Vision and Pattern Recognition · Computer Science 2019-08-22 Zahra Mirikharaji , Yiqi Yan , Ghassan Hamarneh