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This paper investigates the problem of image segmentation using superpixels. We propose two approaches to enhance the discriminative ability of the superpixel's covariance descriptors. In the first one, we employ the Log-Euclidean distance…

计算机视觉与模式识别 · 计算机科学 2016-05-19 Xianbin Gu , Jeremiah D. Deng , Martin K. Purvis

We propose a new approach to interactive image segmentation based on some properties of a family of quadratic optimization problems related to dominant sets, a well-known graph-theoretic notion of a cluster which generalizes the concept of…

计算机视觉与模式识别 · 计算机科学 2016-08-04 Eyasu Zemene , Marcello Pelillo

Deep neural networks represent the gold standard for image classification. However, they usually need large amounts of data to reach superior performance. In this work, we focus on image classification problems with a few labeled examples…

计算机视觉与模式识别 · 计算机科学 2021-11-30 Lorenzo Brigato , Luca Iocchi

This note is devoted to an analysis of the so-called peeling algorithm in wavelet denoising. Assuming that the wavelet coefficients of the signal can be modeled by generalized Gaussian random variables, we compute a critical thresholding…

统计理论 · 数学 2009-11-23 Céline Lacaux , Aurélie Muller , Radu Ranta , Samy Tindel

Many approaches to 3D image segmentation are based on hierarchical clustering of supervoxels into image regions. Here we describe a distributed algorithm capable of handling a tremendous number of supervoxels. The algorithm works…

计算机视觉与模式识别 · 计算机科学 2021-06-22 Ran Lu , Aleksandar Zlateski , H. Sebastian Seung

Shapelets are discriminative time series subsequences that allow generation of interpretable classification models, which provide faster and generally better classification than the nearest neighbor approach. However, the shapelet discovery…

机器学习 · 计算机科学 2017-02-23 Atif Raza , Stefan Kramer

This is the first paper in a sequence of studies in which we introduce a new type of neural networks (NNs) -- wavelet-based neural networks (WBNNs) -- and study their properties and potential for applications. We begin this study with a…

机器学习 · 计算机科学 2022-11-02 Lubomir T. Dechevsky , Kristoffer M. Tangrand

Three-dimensional x-ray CT image reconstruction in baggage scanning in security applications is an important research field. The variety of materials to be reconstructed is broader than medical x-ray imaging. Presence of high attenuating…

计算机视觉与模式识别 · 计算机科学 2015-08-20 S. Degirmenci , Joseph A. O'Sullivan , David G. Politte

Dilated Convolutions have been shown to be highly useful for the task of image segmentation. By introducing gaps into convolutional filters, they enable the use of larger receptive fields without increasing the original kernel size. Even…

计算机视觉与模式识别 · 计算机科学 2019-03-20 Thomas Ziegler , Manuel Fritsche , Lorenz Kuhn , Konstantin Donhauser

Estimating accurate high-dimensional transformations remains very challenging, especially in a clinical setting. In this paper, we introduce a multiscale parameterization of deformations to enhance registration and atlas estimation in the…

最优化与控制 · 数学 2025-01-31 Fleur Gaudfernau , Eléonore Blondiaux , Stéphanie Allassonnière , Erwan Le Pennec

Though widely used in image classification, convolutional neural networks (CNNs) are prone to noise interruptions, i.e. the CNN output can be drastically changed by small image noise. To improve the noise robustness, we try to integrate…

计算机视觉与模式识别 · 计算机科学 2021-09-01 Qiufu Li , Linlin Shen , Sheng Guo , Zhihui Lai

Today Bayesian networks are more used in many areas of decision support and image processing. In this way, our proposed approach uses Bayesian Network to modelize the segmented image quality. This quality is calculated on a set of…

计算机视觉与模式识别 · 计算机科学 2015-01-23 Mohamed Ali Mahjoub , Mohamed Mhiri

On a compact interval, we introduce and study a whole family of wavelets depending on a free parameter that can be suitably modulated to improve performance. Such wavelets arise from de la Vall\'ee Poussin (VP) interpolation at Chebyshev…

数值分析 · 数学 2025-03-18 Woula Themistoclakis , Marc Van Barel

Image segmentation is a fundamental step for the interpretation of Remote Sensing Images. Clustering or segmentation methods usually precede the classification task and are used as support tools for manual labeling. The most common…

计算机视觉与模式识别 · 计算机科学 2022-03-08 Kiran Mantripragada , Faisal Z. Qureshi

We introduce a new efficient algorithm for Helmholtz problems in perforated domains with the design of the scheme allowing for possibly large wavenumbers. Our method is based upon the Wavelet-based Edge Multiscale Finite Element Method…

数值分析 · 数学 2019-06-21 Shubin Fu , Guanglian Li , Richard Craster , Sebastien Guenneau

Learning to rank has recently emerged as an attractive technique to train deep convolutional neural networks for various computer vision tasks. Pairwise ranking, in particular, has been successful in multi-label image classification,…

计算机视觉与模式识别 · 计算机科学 2017-06-02 Yuncheng Li , Yale Song , Jiebo Luo

We consider space-efficient single-pass estimation of the number of butterflies, a fundamental bipartite graph motif, from a massive bipartite graph stream where each edge represents a connection between entities in two different…

数据结构与算法 · 计算机科学 2019-08-30 Seyed-Vahid Sanei-Mehri , Yu Zhang , Ahmet Erdem Sariyuce , Srikanta Tirthapura

Among the existing fusion algorithms, the wavelet fusion method is the most frequently discussed one in recent publications because the wavelet approach preserves the spectral characteristics of the multispectral image better than other…

计算机视觉与模式识别 · 计算机科学 2017-01-10 Hamid Reza Shahdoosti

Lung cancer is a leading cause of death in most countries of the world. Since prompt diagnosis of tumors can allow oncologists to discern their nature, type and the mode of treatment, tumor detection and segmentation from CT Scan images is…

图像与视频处理 · 电气工程与系统科学 2021-11-18 Farhanaz Farheen , Md. Salman Shamil , Nabil Ibtehaz , M. Sohel Rahman

MapReduce is becoming the de facto framework for storing and processing massive data, due to its excellent scalability, reliability, and elasticity. In many MapReduce applications, obtaining a compact accurate summary of data is essential.…

数据库 · 计算机科学 2011-11-01 Jeffrey Jestes , Ke Yi , Feifei Li