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In work started in [17] and continued in this paper our objective is to study selectors of multivalued functions which have interesting dynamical properties, such as possessing absolutely continuous invariant measures. We specify the graph…

Dynamical Systems · Mathematics 2016-03-27 Paweł Góra , Zhenyang Li , Abraham Boyarsky , Harald Proppe

In this paper, an approach for generalizing the Gromov-Hausdorff metric is presented, which applies to metric spaces equipped with some additional structure. A special case is the Gromov-Hausdorff-Prokhorov metric between measured metric…

Metric Geometry · Mathematics 2023-11-30 Ali Khezeli

This paper introduces a novel unified framework for calculating the first arrival position (FAP) density in diffusion-based molecular communication (MC) systems with fully-absorbing receivers, applicable to any spatial dimension or receiver…

Information Theory · Computer Science 2023-04-21 Yen-Chi Lee , Jen-Ming Wu , Min-Hsiu Hsieh

Real-time moving object detection in unconstrained scenes is a difficult task due to dynamic background, changing foreground appearance and limited computational resource. In this paper, an optical flow based moving object detection…

Computer Vision and Pattern Recognition · Computer Science 2018-07-16 Junjie Huang , Wei Zou , Jiagang Zhu , Zheng Zhu

In this paper, we investigate the geometry of a general class of gradient flows with multiple local maxima. we decompose the underlying space into disjoint regions of attraction and establish the adjacency criterion. The criterion states a…

Dynamical Systems · Mathematics 2017-09-11 Xudong Chen

Fluid antenna multiple access (FAMA) enables each user to rapidly switch among several closely spaced ports and select the strongest received signal. Although this mechanism offers micro-scale spatial diversity, its behavior in multiuser…

Information Theory · Computer Science 2026-05-25 Anastasios Papazafeiropoulos

LiDAR-Inertial Odometry (LIO) demonstrates outstanding accuracy and stability in general low-speed and smooth motion scenarios. However, in high-speed and intense motion scenarios, such as sharp turns, two primary challenges arise: firstly,…

Robotics · Computer Science 2024-08-22 Tianxiang Zhang , Xuanxuan Zhang , Zongbo Liao , Xin Xia , You Li

The notion of a Fast Moving Object (FMO), i.e. an object that moves over a distance exceeding its size within the exposure time, is introduced. FMOs may, and typically do, rotate with high angular speed. FMOs are very common in sports…

Computer Vision and Pattern Recognition · Computer Science 2019-05-13 Denys Rozumnyi , Jan Kotera , Filip Sroubek , Lukas Novotny , Jiri Matas

Optical flow is inherently a 2D search problem, and thus the computational complexity grows quadratically with respect to the search window, making large displacements matching infeasible for high-resolution images. In this paper, we take…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Haofei Xu , Jiaolong Yang , Jianfei Cai , Juyong Zhang , Xin Tong

Multiple object tracking (MOT) has been successfully investigated in computer vision. However, MOT for the videos captured by unmanned aerial vehicles (UAV) is still challenging due to small object size, blurred object appearance, and very…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Mufeng Yao , Jiaqi Wang , Jinlong Peng , Mingmin Chi , Chao Liu

Recent numerical results on advection dynamics have shown that particles denser than the fluid can remain trapped indefinitely in a bounded region of an open fluid flow. Here, we investigate this counterintuitive phenomenon both numerically…

Fluid Dynamics · Physics 2014-04-01 Jean-Regis Angilella , Rafael D. Vilela , Adilson E. Motter

We study dynamics of a generic quadratic diffeomorphism, a 3D generalization of the planar H\'{e}non map. Focusing on the dissipative, orientation preserving case, we give a comprehensive parameter study of codimension-one and two…

Chaotic Dynamics · Physics 2023-06-08 Amanda E Hampton , James D Meiss

Most ML datasets today contain biases. When we train models on these datasets, they often not only learn these biases but can worsen them -- a phenomenon known as bias amplification. Several co-occurrence-based metrics have been proposed to…

Computer Vision and Pattern Recognition · Computer Science 2025-11-03 Bhanu Tokas , Rahul Nair , Hannah Kerner

Underwater object tracking is challenging due to wavelength dependent attenuation and scattering, which severely distort appearance across depths and water conditions. Existing trackers trained on terrestrial data fail to generalize to…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Suhas Srinath , Hemang Jamadagni , Aditya Chadrasekar , Prathosh AP

A generic modular array architecture is proposed, featuring uniform/non-uniform subarray layouts that allows for flexible deployment. The bistatic near-field sensing system is considered, where the target is located in the near-field of the…

Signal Processing · Electrical Eng. & Systems 2024-05-31 Chunwei Meng , Dingyou Ma , Xu Chen , Zhiyong Feng , Yuanwei Liu

We consider the one-parameter family of interval maps arising from generalized continued fraction expansions known as alpha-continued fractions. For such maps, we perform a numerical study of the behaviour of metric entropy as a function of…

Dynamical Systems · Mathematics 2015-05-14 Carlo Carminati , Stefano Marmi , Alessandro Profeti , Giulio Tiozzo

The classical multi-agent rendezvous problem asks for a deterministic algorithm by which $n$ points scattered in a plane can move about at constant speed and merge at a single point, assuming each point can use only the locations of the…

Multiagent Systems · Computer Science 2013-06-24 Peter Hegarty , Anders Martinsson , Dmitry Zhelezov

We prove that a singular-hyperbolic attractor of a 3-dimensional flow is chaotic, in two strong different senses. Firstly, the flow is expansive: if two points remain close for all times, possibly with time reparametrization, then their…

Dynamical Systems · Mathematics 2009-01-24 Vitor Araujo , Maria Jose Pacifico , Enrique Pujals , Marcelo Viana

Oriented object detection is a challenging task in aerial images since the objects in aerial images are displayed in arbitrary directions and are frequently densely packed. The mainstream detectors describe rotating objects using a…

Computer Vision and Pattern Recognition · Computer Science 2021-11-09 Xinyi Yu , Mi Lin , Jiangping Lu , Linlin Ou

We explore the connection between the area law for entanglement and geometry by representing the entanglement entropies corresponding to all $2^N$ bipartitions of an $N$-party pure quantum system by means of a (generalized) adjacency…