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Practical aperture synthesis imaging algorithms work by iterating between estimating the sky brightness distribution and a comparison of a prediction based on this estimate with the measured data ("visibilities"). Accuracy in the latter…

Instrumentation and Methods for Astrophysics · Physics 2021-02-26 Karel Adámek , Peter Wortmann , Bojan Nikolic , Ben Mort , Wesley Armour

In this paper, we present the Circular Accessible Depth (CAD), a robust traversability representation for an unmanned ground vehicle (UGV) to learn traversability in various scenarios containing irregular obstacles. To predict CAD, we…

Robotics · Computer Science 2022-12-29 Shikuan Xie , Ran Song , Yuenan Zhao , Xueqin Huang , Yibin Li , Wei Zhang

The goal of this paper is to reduce the total complexity of gradient-based methods for two classes of problems: affine-constrained composite convex optimization and bilinear saddle-point structured non-smooth convex optimization. Our…

Optimization and Control · Mathematics 2022-01-05 Qihang Lin , Yangyang Xu

Estimating free energy differences quantifies thermodynamic preferences in molecular interactions, which is central to chemistry and drug discovery. Despite fruitful progress, existing methods still face key limitations: classical…

Machine Learning · Computer Science 2026-05-05 Ziyang Yu , Yi He , Wenbing Huang , Wen Yan , Yang Liu

In autonomous driving, using a variety of sensors to recognize preceding vehicles in middle and long distance is helpful for improving driving performance and developing various functions. However, if only LiDAR or camera is used in the…

Robotics · Computer Science 2021-03-26 Hyunjin Bae , Gu Lee , Jaeseung Yang , Gwanjun Shin , Yongseob Lim , Gyeungho Choi

Video salient object detection (VSOD), as a fundamental computer vision problem, has been extensively discussed in the last decade. However, all existing works focus on addressing the VSOD problem in 2D scenarios. With the rapid development…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Xiang Li , Haoyuan Cao , Shijie Zhao , Junlin Li , Li Zhang , Bhiksha Raj

Video Anomaly Detection (VAD) represents a challenging and prominent research task within computer vision. In recent years, Pose-based Video Anomaly Detection (PAD) has drawn considerable attention from the research community due to several…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Ghazal Alinezhad Noghre , Armin Danesh Pazho , Hamed Tabkhi

Faithfully reconstructing textured shapes and physical properties from videos presents an intriguing yet challenging problem. Significant efforts have been dedicated to advancing such a system identification problem in this area. Previous…

Graphics · Computer Science 2025-06-10 Chuhao Chen , Zhiyang Dou , Chen Wang , Yiming Huang , Anjun Chen , Qiao Feng , Jiatao Gu , Lingjie Liu

We study the worst-case behavior of Block Coordinate Descent (BCD) type algorithms for unconstrained minimization of coordinate-wise smooth convex functions. This behavior is indeed not completely understood, and the practical success of…

Optimization and Control · Mathematics 2025-07-23 Yassine Kamri , François Glineur , Julien M. Hendrickx , Ion Necoara

Vision Transformers (ViTs) have achieved state-of-the-art performance on various vision tasks. However, ViTs' self-attention module is still arguably a major bottleneck, limiting their achievable hardware efficiency. Meanwhile, existing…

Machine Learning · Computer Science 2025-03-04 Haoran You , Zhanyi Sun , Huihong Shi , Zhongzhi Yu , Yang Zhao , Yongan Zhang , Chaojian Li , Baopu Li , Yingyan Celine Lin

The spatially-varying field of the human visual system has recently received a resurgence of interest with the development of virtual reality (VR) and neural networks. The computational demands of high resolution rendering desired for VR…

Image and Video Processing · Electrical Eng. & Systems 2020-12-17 Elian Malkin , Arturo Deza , Tomaso Poggio

Mobile robots in dynamic environments require fast planning, especially when onboard computational resources are limited. While classic potential field based algorithms may suffice in simple scenarios, in most cases algorithms able to…

Robotics · Computer Science 2023-12-06 Fabio DallaLibera , Shinya Abe , Takeshi Ando

Inverse Kinematics (IK) is a core problem in robotics, in which joint configurations are found to achieve a desired end-effector pose. Although analytical solvers are fast and efficient, they are limited to systems with low…

Robotics · Computer Science 2025-10-10 Cael Yasutake , Zachary Kingston , Brian Plancher

We present a new method to achieve high-contrast images using segmented and/or on-axis telescopes. Our approach relies on using two sequential Deformable Mirrors to compensate for the large amplitude excursions in the telescope aperture due…

Instrumentation and Methods for Astrophysics · Physics 2015-06-12 Laurent Pueyo , Colin Norman

In the paper, we propose a class of faster adaptive Gradient Descent Ascent (GDA) methods for solving the nonconvex-strongly-concave minimax problems by using the unified adaptive matrices, which include almost all existing coordinate-wise…

Optimization and Control · Mathematics 2023-02-22 Feihu Huang , Xidong Wu , Zhengmian Hu

Autonomous driving in complex urban scenarios requires 3D perception to be both comprehensive and precise. Traditional 3D perception methods focus on object detection, resulting in sparse representations that lack environmental detail.…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Chao Chen , Ruoyu Wang , Yuliang Guo , Cheng Zhao , Xinyu Huang , Chen Feng , Liu Ren

This work proposes A$^2$GD, a novel adaptive accelerated gradient descent method for convex and composite optimization. Smoothness and convexity constants are updated via Lyapunov analysis. Inspired by stability analysis in ODE solvers, the…

Optimization and Control · Mathematics 2026-02-10 Zeyi Xu , Long Chen

Fast computation of singular value decomposition (SVD) is of great interest in various machine learning tasks. Recently, SVD methods based on randomized linear algebra have shown significant speedup in this regime. This paper attempts to…

Distributed, Parallel, and Cluster Computing · Computer Science 2017-06-23 Yuechao Lu , Fumihiko Ino , Yasuyuki Matsushita

Tensor decomposition, a collection of factorization techniques for multidimensional arrays, are among the most general and powerful tools for scientific analysis. However, because of their increasing size, today's data sets require more…

Machine Learning · Computer Science 2020-03-11 Jeremy Charlier , Vladimir Makarenkov

In modern video coding standards, block-based inter prediction is widely adopted, which brings high compression efficiency. However, in natural videos, there are usually multiple moving objects of arbitrary shapes, resulting in complex…

Image and Video Processing · Electrical Eng. & Systems 2024-09-13 Zhuoyuan Li , Zikun Yuan , Li Li , Dong Liu , Xiaohu Tang , Feng Wu