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We propose a procedure for supervised classification that is based on potential functions. The potential of a class is defined as a kernel density estimate multiplied by the class's prior probability. The method transforms the data to a…

机器学习 · 统计学 2017-12-18 Oleksii Pokotylo , Karl Mosler

We propose, analyze and realize a variational multiclass segmentation scheme that partitions a given image into multiple regions exhibiting specific properties. Our method determines multiple functions that encode the segmentation regions…

计算机视觉与模式识别 · 计算机科学 2023-09-19 Nadja Gruber , Johannes Schwab , Sebastien Court , Elke Gizewski , Markus Haltmeier

Multi-label image classification, which can be categorized into label-dependency and region-based methods, is a challenging problem due to the complex underlying object layouts. Although region-based methods are less likely to encounter…

计算机视觉与模式识别 · 计算机科学 2022-11-24 Jiawei Zhan , Jun Liu , Wei Tang , Guannan Jiang , Xi Wang , Bin-Bin Gao , Tianliang Zhang , Wenlong Wu , Wei Zhang , Chengjie Wang , Yuan Xie

Graph-based variational methods have recently shown to be highly competitive for various classification problems of high-dimensional data, but are inherently difficult to handle from an optimization perspective. This paper proposes a convex…

最优化与控制 · 数学 2017-02-17 Egil Bae , Ekaterina Merkurjev

Recognizing multiple labels of images is a fundamental but challenging task in computer vision, and remarkable progress has been attained by localizing semantic-aware image regions and predicting their labels with deep convolutional neural…

计算机视觉与模式识别 · 计算机科学 2017-12-21 Tianshui Chen , Zhouxia Wang , Guanbin Li , Liang Lin

Our work considers the optimization of the sum of a non-smooth convex function and a finite family of composite convex functions, each one of which is composed of a convex function and a bounded linear operator. This type of problem is…

最优化与控制 · 数学 2019-08-30 Yu-Chao Tang , Chuan-Xi Zhu , Meng Wen , Ji-Gen Peng

This paper presents a new approach for the challenging problem of geo-locating an image using image matching in a structured database of city-wide reference images with known GPS coordinates. We cast the geo-localization as a clustering…

计算机视觉与模式识别 · 计算机科学 2017-09-15 Eyasu Zemene , Yonatan Tariku , Haroon Idrees , Andrea Prati , Marcello Pelillo , Mubarak Shah

Bounds on the log partition function are important in a variety of contexts, including approximate inference, model fitting, decision theory, and large deviations analysis. We introduce a new class of upper bounds on the log partition…

机器学习 · 计算机科学 2013-01-07 Martin Wainwright , Tommi S. Jaakkola , Alan Willsky

Traditional domain generalization methods often rely on domain alignment to reduce inter-domain distribution differences and learn domain-invariant representations. However, domain shifts are inherently difficult to eliminate, which limits…

计算机视觉与模式识别 · 计算机科学 2024-12-10 Yuheng Xu , Taiping Zhang

Existing unsupervised domain adaptation methods based on adversarial learning have achieved good performance in several medical imaging tasks. However, these methods focus only on global distribution adaptation and ignore distribution…

计算机视觉与模式识别 · 计算机科学 2022-07-11 Wei Feng , Lin Wang , Lie Ju , Xin Zhao , Xin Wang , Xiaoyu Shi , Zongyuan Ge

This paper presents a new Bayesian estimation technique for hidden Potts-Markov random fields with unknown regularisation parameters, with application to fast unsupervised K-class image segmentation. The technique is derived by first…

统计计算 · 统计学 2016-02-03 Marcelo Pereyra , Steve McLaughlin

Object parts serve as crucial intermediate representations in various downstream tasks, but part-level representation learning still has not received as much attention as other vision tasks. Previous research has established that Vision…

计算机视觉与模式识别 · 计算机科学 2024-08-16 Jiahao Xia , Wenjian Huang , Min Xu , Jianguo Zhang , Haimin Zhang , Ziyu Sheng , Dong Xu

We propose Boundary-RL, a novel weakly supervised segmentation method that utilises only patch-level labels for training. We envision the segmentation as a boundary detection problem, rather than a pixel-level classification as in previous…

计算机视觉与模式识别 · 计算机科学 2023-08-23 Weixi Yi , Vasilis Stavrinides , Zachary M. C. Baum , Qianye Yang , Dean C. Barratt , Matthew J. Clarkson , Yipeng Hu , Shaheer U. Saeed

This paper introduces a simple but highly efficient ensemble for robust texture classification, which can effectively deal with translation, scale and changes of significant viewpoint problems. The proposed method first inherits the spirit…

计算机视觉与模式识别 · 计算机科学 2012-03-06 Shu Kong , Donghui Wang

Recent applications in computer vision have come to heavily rely on superpixel over-segmentation as a pre-processing step for higher level vision tasks, such as object recognition, image labelling or image segmentation. Here we present a…

计算机视觉与模式识别 · 计算机科学 2016-05-20 Imanol Luengo , Mark Basham , Andrew P. French

Image segmentation refers to the separation of objects from the background, and has been one of the most challenging aspects of digital image processing. Practically it is impossible to design a segmentation algorithm which has 100%…

计算机视觉与模式识别 · 计算机科学 2021-05-13 Asra Aslam , Ekram Khan , Mohammad Samar Ansari , M. M. Sufyan Beg

Subspace clustering is a powerful unsupervised approach for hyperspectral image (HSI) analysis, but its high computational and memory costs limit scalability. Superpixel segmentation can improve efficiency by reducing the number of data…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Xianlu Li , Nicolas Nadisic , Shaoguang Huang , Aleksandra Pizurica

Neural network-based clustering has recently gained popularity, and in particular a constrained clustering formulation has been proposed to perform transfer learning and image category discovery using deep learning. The core idea is to…

计算机视觉与模式识别 · 计算机科学 2018-06-29 Yen-Chang Hsu , Zhaoyang Lv , Joel Schlosser , Phillip Odom , Zsolt Kira

Normal factor graph duality offers new possibilities for Monte Carlo algorithms in graphical models. Specifically, we consider the problem of estimating the partition function of the ferromagnetic Ising and Potts models by Monte Carlo…

统计计算 · 统计学 2018-11-27 Mehdi Molkaraie , Vicenc Gomez

We propose a federated algorithm for reconstructing images using multimodal tomographic data sourced from dispersed locations, addressing the challenges of traditional unimodal approaches that are prone to noise and reduced image quality.…

最优化与控制 · 数学 2025-01-13 Geunyeong Byeon , Minseok Ryu , Zichao Wendy Di , Kibaek Kim