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Optical Character Recognition has been a challenging field in the advent of digital computers. It is needed where information is to be readable both to humans and machines. The process of OCR is composed of a set of pre and post processing…

计算机视觉与模式识别 · 计算机科学 2018-01-04 Chinmay Chinara , Nishant Nath , Subhajeet Mishra , Sangram Keshari Sahoo , Farida Ashraf Ali

This paper presents two novel regularization methods motivated in part by the geometric significance of biorthogonal bases in signal processing applications. These methods, in particular, draw upon the structural relevance of orthogonality…

数值分析 · 计算机科学 2016-01-06 Tarek A. Lahlou , Alan V. Oppenheim

This paper presents a set of novel scan-matching techniques for vehicle pose estimation using automotive radar measurements. The proposed approach modifies the Normal Distributions Transform (NDT) -- a state-of-the-art scan-matching SLAM…

信号处理 · 电气工程与系统科学 2021-07-21 Martijn Heller , Nikita Petrov , Alexander Yarovoy

This paper studies the joint support recovery of similar sparse vectors on the basis of a limited number of noisy linear measurements, i.e., in a multiple measurement vector (MMV) model. The additive noise signals on each measurement vector…

信息论 · 计算机科学 2015-06-18 J. F. Determe , J. Louveaux , L. Jacques , F. Horlin

In recent years, there has been a growing interest in designing small-footprint yet effective Connectionist Temporal Classification based keyword spotting (CTC-KWS) systems. They are typically deployed on low-resource computing platforms,…

音频与语音处理 · 电气工程与系统科学 2024-12-25 Yu Xi , Haoyu Li , Hao Li , Jiaqi Guo , Xu Li , Wen Ding , Kai Yu

We first revisit the problem of estimating the spot volatility of an It\^o semimartingale using a kernel estimator. We prove a Central Limit Theorem with optimal convergence rate for a general two-sided kernel. Next, we introduce a new…

计量经济学 · 经济学 2022-02-08 José E. Figueroa-López , Bei Wu

The non-destructive readout mode of a detector allows its pixels to be read multiple times during integration, generating a series of "up-the-ramp" images that keep accumulating photons between successive frames. Since the noise is…

天体物理仪器与方法 · 物理学 2025-01-16 Guanghuan Wang , Hu Zhan , Zun Luo , Chengqi Liu , Youhua Xu , Chun Lin , Yanfeng Wei , WenLong Fan

Pose Graph Optimization (PGO) is an important non-convex optimization problem and is the state-of-the-art formulation for SLAM in robotics. It also has applications like camera motion estimation, structure from motion and 3D reconstruction…

机器人学 · 计算机科学 2018-06-04 S. M. Nasiri , Reshad Hosseini , Hadi Moradi

This work aspires to provide a trustworthy solution for target localization in adverse environments, where malicious nodes, capable of manipulating distance measurements (i.e., performing spoofing attacks), are present, thus hindering…

信号处理 · 电气工程与系统科学 2025-02-28 Slavisa Tomic , Marko Beko , Dejan Vukobratovic , Srdjan Krco

Algorithms for signal recovery in compressed sensing (CS) are often improved by stabilization techniques, such as damping, or the less widely known so-called fractional approach, which is based on the expectation propagation (EP) framework.…

信息论 · 计算机科学 2021-10-01 Carmen Sippel , Robert F. H. Fischer

Most studies that consider the problem of estimating the location of a point source in wireless sensor networks assume that the source location is estimated by a set of spatially distributed sensors, whose locations are fixed. Motivated by…

信息论 · 计算机科学 2016-11-18 Mohammad Fanaei , Matthew C. Valenti , Natalia A. Schmid

Here, a generalized induction coil sensor model, more generalized than other models, has been considered and the equivalent magnetic field of the coil thermal noise and the sensor signal to noise ratio are calculated theoretically based on…

仪器与探测器 · 物理学 2014-09-26 Abolghasem Nourmohammadi , Seyed Mohammad Hassan Feiz , Mohammad Hassan Asteraki

We present and analyze methods for the kinematic and kinetostatic calibration of, typically, wrist mounted force/torque sensors in robotics. The algorithms are based on matrix factorization and require no special equipment. The only…

机器人学 · 计算机科学 2019-04-15 Fredrik Bagge Carlson

We develop strategies for enhancing the signal/noise ratio for stochastically sampled correlation functions. The techniques are general and offer a wide range of applicability. We demonstrate the potential of the approach with a generic…

高能物理 - 格点 · 物理学 2014-08-27 William Detmold , Michael G. Endres

Seismic noise cross correlations are used to image crustal structure and heterogeneity. Typically, seismic networks are only anisotropically illuminated by seismic noise, a consequence of the non-uniform distribution of sources. Here, we…

地球与行星天体物理 · 物理学 2015-06-17 Shravan M. Hanasoge

Softmax self-attention often assigns disproportionate weight to semantically uninformative tokens such as special tokens and punctuation, a phenomenon known as attention noise. While recent methods like Cog Attention and the Differential…

计算与语言 · 计算机科学 2025-08-27 Ivan Kobyzev , Abbas Ghaddar , Dingtao Hu , Boxing Chen

This report considers the class of applications of sensor networks in which each sensor node makes measurements, such as temperature or humidity, at the precise location of the node. Such spot-sensing applications approximate the physical…

网络与互联网体系结构 · 计算机科学 2010-03-26 Xiaoyu Chu , Harish Sethu

Nitrogen-vacancy centers are spatially resolved probes of current noise. So far, current noise sensing with NV centers has primarily been used as a way to probe equilibrium transport coefficients. We develop a framework for computing the…

介观与纳米尺度物理 · 物理学 2024-04-25 Yifan Zhang , Rhine Samajdar , Sarang Gopalakrishnan

The Discriminative Optimization (DO) algorithm has been proved much successful in 3D point cloud registration. In the original DO, the feature (descriptor) of two point cloud was defined as a histogram, and the element of histogram…

计算机视觉与模式识别 · 计算机科学 2021-04-20 Jia Wang , Ping Wang , Biao Li , Ruigang Fu , Junzheng Wu

Synchronization of rotations is the problem of estimating a set of rotations R_i in SO(n), i = 1, ..., N, based on noisy measurements of relative rotations R_i R_j^T. This fundamental problem has found many recent applications, most…

信息论 · 计算机科学 2016-01-07 Nicolas Boumal , Amit Singer , P. -A. Absil , Vincent D. Blondel