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Unsupervised deep learning has recently demonstrated the promise of producing high-quality samples. While it has tremendous potential to promote the image colorization task, the performance is limited owing to the high-dimension of data…

计算机视觉与模式识别 · 计算机科学 2022-08-19 Jin Li , Wanyun Li , Zichen Xu , Yuhao Wang , Qiegen Liu

Image registration is the process of transforming different sets of data into one coordinate system and is required for various remote sensing applications like change detection, image fusion, and other related areas. The effect of…

计算机视觉与模式识别 · 计算机科学 2013-03-28 Arun P. V. , Dr. S. K. Katiyar

We present a very fast algorithm for general matrix factorization of a data matrix for use in the statistical analysis of high-dimensional data via latent factors. Such data are prevalent across many application areas and generate an…

Recommender systems are essential information technologies today, and recommendation algorithms combined with deep learning have become a research hotspot in this field. The recommendation model known as LFM (Latent Factor Model), which…

信息检索 · 计算机科学 2024-03-27 Junyi Liu

Natural image quality is often degraded by adverse weather conditions, significantly impairing the performance of downstream tasks. Image restoration has emerged as a core solution to this challenge and has been widely discussed in the…

计算机视觉与模式识别 · 计算机科学 2025-07-21 Xingyu Jiang , Ning Gao , Hongkun Dou , Xiuhui Zhang , Xiaoqing Zhong , Yue Deng , Hongjue Li

We provide a template to derive convergence rates for the following popular versions of the Frank-Wolfe algorithm on polytopes: vanilla Frank-Wolfe, Frank-Wolfe with away steps, Frank-Wolfe with blended pairwise steps, and Frank-Wolfe with…

最优化与控制 · 数学 2025-05-21 Elias Wirth , Javier Pena , Sebastian Pokutta

Recommender systems are considered one of the most rapidly growing branches of Artificial Intelligence. The demand for finding more efficient techniques to generate recommendations becomes urgent. However, many recommendations become…

机器学习 · 计算机科学 2022-11-17 Eyad Kannout , Hung Son Nguyen , Marek Grzegorowski

Wavelet decompositions of integral operators have proven their efficiency in reducing computing times for many problems, ranging from the simulation of waves or fluids to the resolution of inverse problems in imaging. Unfortunately,…

图像与视频处理 · 电气工程与系统科学 2020-08-03 Paul Escande , Pierre Weiss

Existing fast algorithms for bilateral and nonlocal means filtering mostly work with grayscale images. They cannot easily be extended to high-dimensional data such as color and hyperspectral images, patch-based data, flow-fields, etc. In…

计算机视觉与模式识别 · 计算机科学 2018-11-07 Pravin Nair , Kunal. N. Chaudhury

In the general context of complex data processing, this paper reviews a recent practical approach to the continuous wavelet formalism on the sphere. This formalism notably yields a correspondence principle which relates wavelets on the…

天体物理学 · 物理学 2007-08-14 Y. Wiaux , J. D. McEwen , P. Vielva

Microlocal analysis provides deep insight into singularity structures and is often crucial for solving inverse problems, predominately, in imaging sciences. Of particular importance is the analysis of wavefront sets and the correct…

图像与视频处理 · 电气工程与系统科学 2019-07-11 Héctor Andrade-Loarca , Gitta Kutyniok , Ozan Öktem , Philipp Petersen

A novel wavelet-like function is presented that makes it convenient to create filter banks given mainly two parameters that influence the focus area and the filter count. This is accomplished by computing the inverse Fourier transform of…

信号处理 · 电气工程与系统科学 2024-02-16 Dherik Devakumar , Ole Christian Eidheim

The Fast Fourier Transform (FFT) is an algorithm of paramount importance in signal processing as it allows to apply the Fourier transform in O(n log n) instead of O(n 2) arithmetic operations. Graph Signal Processing (GSP) is a recent…

数值分析 · 计算机科学 2017-06-19 Luc Le Magoarou , Rémi Gribonval , Nicolas Tremblay

In this paper, we develop new fast and efficient algorithms for designing single/multiple unimodular waveforms/codes with good auto- and cross-correlation or weighted correlation properties, which are highly desired in radar and…

信息论 · 计算机科学 2018-02-08 Yongzhe Li , Sergiy A. Vorobyov

AI systems rely on extensive training on large datasets to address various tasks. However, image-based systems, particularly those used for demographic attribute prediction, face significant challenges. Many current face image datasets…

计算机视觉与模式识别 · 计算机科学 2024-04-30 Georgia Baltsou , Ioannis Sarridis , Christos Koutlis , Symeon Papadopoulos

In this study we investigate the fast image filtering algorithm based on Intro sort algorithm and fast noise reduction of infrared images. Main feature of the proposed approach is that no prior knowledge of noise required. It is developed…

计算机视觉与模式识别 · 计算机科学 2014-12-31 Kapil Kumar Gupta , Rizwan Beg , Jitendra Kumar Niranjan

Several differentiating algorithms of the noisy signals are considered. The proposed wavelet based technique is compared with others based on the Fourier transform and the finite differences. The accuracy of the calculations for different…

数学物理 · 物理学 2007-05-23 I. Patrickeyev , R. Stepanov , P. Frick

Recent CNN and Transformer-based models tried to utilize frequency and periodicity information for long-term time series forecasting. However, most existing work is based on Fourier transform, which cannot capture fine-grained and local…

机器学习 · 计算机科学 2024-01-05 Peiyuan Liu , Beiliang Wu , Naiqi Li , Tao Dai , Fengmao Lei , Jigang Bao , Yong Jiang , Shu-Tao Xia

An algorithm is proposed for the segmentation of image into multiple levels using mean and standard deviation in the wavelet domain. The procedure provides for variable size segmentation with bigger block size around the mean, and having…

One of the classical problems in machine learning and data mining is feature selection. A feature selection algorithm is expected to be quick, and at the same time it should show high performance. MeLiF algorithm effectively solves this…

机器学习 · 计算机科学 2016-11-08 Ivan Smetannikov , Ilya Isaev , Andrey Filchenkov