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A major limitation of minimally invasive surgery is the difficulty in accurately locating the internal anatomical structures of the target organ due to the lack of tactile feedback and transparency. Augmented reality (AR) offers a promising…

Robotics · Computer Science 2024-09-19 Jingwei Song , Ray Zhang , Wenwei Zhang , Hao Zhou , Maani Ghaffari

This paper investigates the problem of high-precision target localization in integrated sensing and communication (ISAC) systems, where the target is sensed via both a direct path and a reconfigurable intelligent surface (RIS)-assisted…

Signal Processing · Electrical Eng. & Systems 2026-02-17 Huyen-Trang Ta , Ngoc-Son Duong , Trung-Hieu Nguyen , Van-Linh Nguyen , Thai-Mai Dinh

This paper presents a visual SLAM system that uses both points and lines for robust camera localization, and simultaneously performs a piece-wise planar reconstruction (PPR) of the environment to provide a structural map in real-time. One…

Computer Vision and Pattern Recognition · Computer Science 2023-01-31 Fangwen Shu , Jiaxuan Wang , Alain Pagani , Didier Stricker

Simultaneous Localization and Mapping (SLAM) is a fundamental task in robotics, driving numerous applications such as autonomous driving and virtual reality. Recent progress on neural implicit SLAM has shown encouraging and impressive…

Robotics · Computer Science 2024-07-29 Zhe Xin , Yufeng Yue , Liangjun Zhang , Chenming Wu

When adapting Simultaneous Mapping and Localization (SLAM) to real-world applications, such as autonomous vehicles, drones, and augmented reality devices, its memory footprint and computing cost are the two main factors limiting the…

Robotics · Computer Science 2022-11-04 Yeonsoo Park , Soohyun Bae

Signal estimation problems with smoothness and sparsity priors can be naturally modeled as quadratic optimization with $\ell_0$-"norm" constraints. Since such problems are non-convex and hard-to-solve, the standard approach is, instead, to…

Machine Learning · Statistics 2020-10-20 Alper Atamturk , Andres Gomez , Shaoning Han

In this paper, we develop a randomized algorithm and theory for learning a sparse model from large-scale and high-dimensional data, which is usually formulated as an empirical risk minimization problem with a sparsity-inducing regularizer.…

Machine Learning · Computer Science 2016-10-18 Lijun Zhang , Tianbao Yang , Rong Jin , Zhi-Hua Zhou

Seriation seeks to reconstruct a linear order between variables using unsorted, pairwise similarity information. It has direct applications in archeology and shotgun gene sequencing for example. We write seriation as an optimization problem…

Optimization and Control · Mathematics 2015-02-09 Fajwel Fogel , Rodolphe Jenatton , Francis Bach , Alexandre d'Aspremont

Stochastic Gradient (SG) is the defacto iterative technique to solve stochastic optimization (SO) problems with a smooth (non-convex) objective $f$ and a stochastic first-order oracle. SG's attractiveness is due in part to its simplicity of…

Optimization and Control · Mathematics 2024-03-08 David Newton , Raghu Bollapragada , Raghu Pasupathy , Nung Kwan Yip

Variational regularization has remained one of the most successful approaches for reconstruction in imaging inverse problems for several decades. With the emergence and astonishing success of deep learning in recent years, a considerable…

Machine Learning · Computer Science 2021-10-26 Subhadip Mukherjee , Carola-Bibiane Schönlieb , Martin Burger

In this paper, we introduce a new stochastic approximation (SA) type algorithm, namely the randomized stochastic gradient (RSG) method, for solving an important class of nonlinear (possibly nonconvex) stochastic programming (SP) problems.…

Optimization and Control · Mathematics 2015-10-27 Saeed Ghadimi , Guanghui Lan

Convex-concave min-max problems are ubiquitous in machine learning, and people usually utilize first-order methods (e.g., gradient descent ascent) to find the optimal solution. One feature which separates convex-concave min-max problems…

Optimization and Control · Mathematics 2022-03-09 Mingrui Liu , Francesco Orabona

The integration of neural rendering and the SLAM system recently showed promising results in joint localization and photorealistic view reconstruction. However, existing methods, fully relying on implicit representations, are so…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Huajian Huang , Longwei Li , Hui Cheng , Sai-Kit Yeung

Delineating anatomical regions is a key task in medical image analysis. Manual segmentation achieves high accuracy but is labor-intensive and prone to variability, thus prompting the development of automated approaches. Recently, a breadth…

Image and Video Processing · Electrical Eng. & Systems 2025-11-05 Alix de Langlais , Benjamin Billot , Théo Aguilar Vidal , Marc-Olivier Gauci , Hervé Delingette

Precise indoor localization remains a challenging problem for a variety of essential applications. A promising approach to address this problem is to exchange radio signals between mobile agents and static physical anchors (PAs) that bounce…

Signal Processing · Electrical Eng. & Systems 2022-06-22 Erik Leitinger , Bryan Teague , Wenyu Zhang , Mingchao Liang , Florian Meyer

This article presents a new open-source C++ implementation to solve the SLAM problem, which is focused on genericity, versatility and high execution speed. It is based on an original object oriented architecture, that allows the combination…

When it comes to computed tomography (CT), the possibility to reconstruct a small region-of-interest (ROI) using truncated projection data is particularly appealing due to its potential to lower radiation exposure and reduce the scanning…

Numerical Analysis · Mathematics 2016-10-04 Tatiana A. Bubba , Demetrio Labate , Gaetano Zanghirati , Silvia Bonettini

Simultaneous Localization and Mapping (SLAM) technology enables the construction of environmental maps and localization, serving as a key technique for indoor autonomous navigation of mobile robots. Traditional SLAM methods typically…

Robotics · Computer Science 2024-07-17 Jiantao Feng , Xinde Li , HyunCheol Park , Juan Liu , Zhentong Zhang

Recently there has been a growing interest in category-level object pose and size estimation, and prevailing methods commonly rely on single view RGB-D images. However, one disadvantage of such methods is that they require accurate depth…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Jiaqi Yang , Yucong Chen , Xiangting Meng , Chenxin Yan , Min Li , Ran Cheng , Lige Liu , Tao Sun , Laurent Kneip

Convex regression (CR) is an approach for fitting a convex function to a finite number of observations. It arises in various applications from diverse fields such as statistics, operations research, economics, and electrical engineering.…

Optimization and Control · Mathematics 2016-08-09 Necdet Serhat Aybat , Zi Wang