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We are witnessing an explosion of neural implicit representations in computer vision and graphics. Their applicability has recently expanded beyond tasks such as shape generation and image-based rendering to the fundamental problem of…

计算机视觉与模式识别 · 计算机科学 2022-05-26 Jiaming Sun , Xi Chen , Qianqian Wang , Zhengqi Li , Hadar Averbuch-Elor , Xiaowei Zhou , Noah Snavely

Calibrating simulation models that take large quantities of multi-dimensional data as input is a hard simulation optimization problem. Existing adaptive sampling strategies offer a methodological solution. However, they may not sufficiently…

统计方法学 · 统计学 2024-07-17 Pranav Jain , Sara Shashaani , Eunshin Byon

This article is a survey on deep learning methods for single and multiple sound source localization. We are particularly interested in sound source localization in indoor/domestic environment, where reverberation and diffuse noise are…

声音 · 计算机科学 2022-07-20 Pierre-Amaury Grumiaux , Srđan Kitić , Laurent Girin , Alexandre Guérin

Reconstructing the underlying 3D surface of an object from a single image is a challenging problem that has received extensive attention from the computer vision community. Many learning-based approaches tackle this problem by learning a 3D…

计算机视觉与模式识别 · 计算机科学 2023-02-28 Nicolai Häni , Jun-Jee Chao , Volkan Isler

Sampling is classically performed by recording the amplitude of an input signal at given time instants; however, sampling and reconstructing a signal using multiple devices in parallel becomes a more difficult problem to solve when the…

信号处理 · 电气工程与系统科学 2020-04-22 Karen Adam , Adam Scholefield , Martin Vetterli

The paper presents a simple and effective learning-based method for computing a discriminative 3D point cloud descriptor for place recognition purposes. Recent state-of-the-art methods have relatively complex architectures such as…

计算机视觉与模式识别 · 计算机科学 2022-04-11 Jacek Komorowski

This paper presents novel single and multi-shell sampling schemes for diffusion MRI. In diffusion MRI, it is paramount that the number of samples is as small as possible in order that scan times are practical in a clinical setting. The…

信号处理 · 电气工程与系统科学 2019-02-01 Alice P. Bates , Zubair Khalid , Jason D. McEwen , Rodney A. Kennedy , Alessandro Daducci , Erick J. Canales-Rodríguez

A new approach for analyzing waveguide junctions containing conductive cylindrical objects is proposed. The algorithm is based on mode matching technique using local projection functions, which improves the numerical conditioning of the…

计算工程、金融与科学 · 计算机科学 2026-01-12 Malgorzata Warecka , Rafal Lech , Piotr Kowalczyk

We consider the problem of reconstructing one-dimensional point sources from their Fourier measurements in a bounded interval $[-\Omega, \Omega]$. This problem is known to be challenging in the regime where the spacing of the sources is…

信号处理 · 电气工程与系统科学 2024-06-11 Zetao Fei , Hai Zhang

We propose a novel method of efficient upsampling of a single natural image. Current methods for image upsampling tend to produce high-resolution images with either blurry salient edges, or loss of fine textural detail, or spurious noise…

计算机视觉与模式识别 · 计算机科学 2015-03-03 Chinmay Hegde , Oncel Tuzel , Fatih Porikli

Given a sound field generated by a sparse distribution of impulse image sources, can the continuous 3D positions and amplitudes of these sources be recovered from discrete, bandlimited measurements of the field at a finite set of locations,…

声音 · 计算机科学 2022-12-08 Tom Sprunck , Yannick Privat , Cédric Foy , Antoine Deleforge

This paper presents a new method, Diffusing Winding Gradients (DWG), for reconstructing watertight 3D surfaces from unoriented point clouds. Our method exploits the alignment between the gradients of the generalized winding number (GWN)…

图形学 · 计算机科学 2024-10-10 Weizhou Liu , Jiaze Li , Xuhui Chen , Fei Hou , Shiqing Xin , Xingce Wang , Zhongke Wu , Chen Qian , Ying He

In the training process of the implicit 3D reconstruction network, the choice of spatial query points' sampling strategy affects the final performance of the model. Different works have differences in the selection of sampling strategies,…

计算机视觉与模式识别 · 计算机科学 2023-04-12 Q. Liu , X. Yang

We are concerned with the reconstruction of a sound-soft obstacle using far field measurements of the scattered waves associated with incident plane waves sent from one direction but at multiple frequencies. We define, for each frequency,…

数值分析 · 数学 2013-10-22 Mourad Sini , Nguyen Trung Thành

Sound reconstruction via arbitrary objects has been a popular method in recent years, based on the recording of scattered light from the target object with a high-speed detector. In this work, we demonstrate the use of multi-mode fiber as a…

仪器与探测器 · 物理学 2024-05-06 Ege Küçükkömürcü , Berk Nezir Gün , Emre Yüce

In this paper we consider the problem of localizing a set of broadband sources from a finite window of measurements. In the case of narrowband sources this can be reduced to the problem of spectral line estimation, where our goal is simply…

信号处理 · 电气工程与系统科学 2022-10-24 Coleman DeLude , Rakshith Sharma , Santhosh Karnik , Christopher Hood , Mark Davenport , Justin Romberg

This paper presents a method to reconstruct the 3D structure of generic convex rooms from sound signals. Differently from most of the previous approaches, the method is fully uncalibrated in the sense that no knowledge about the microphones…

声音 · 计算机科学 2016-06-21 Marco Crocco , Andrea Trucco , Alessio Del Bue

Point cloud upsampling focuses on generating a dense, uniform and proximity-to-surface point set. Most previous approaches accomplish these objectives by carefully designing a single-stage network, which makes it still challenging to…

计算机视觉与模式识别 · 计算机科学 2022-10-11 Hang Du , Xuejun Yan , Jingjing Wang , Di Xie , Shiliang Pu

We consider the signal reconstruction problem under the case of the signals sampled in the multichannel way and with the presence of noise. Observing that if the samples are inexact, the rigorous enforcement of multichannel interpolation is…

信息论 · 计算机科学 2022-09-20 Dong Cheng , Xiaoxiao Hu , Kit Ian Kou

To phased microphone array for sound source localization, algorithm with both high computational efficiency and high precision is a persistent pursuit. In this paper convolutional neural network (CNN) a kind of deep learning is…

音频与语音处理 · 电气工程与系统科学 2018-02-14 Wei Ma , Xun Liu