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Whirling and swerving, a bacterium is swimming in a test tube, foraging for food. On the surface of a vibrating bath, a droplet starts walking. A certain similarity, but mostly dissimilarity, between the physical memory that emerges in…

Populations and Evolution · Quantitative Biology 2020-11-24 Albert Libchaber , Tsvi Tlusty

The goal of multi-object tracking is to detect and track all objects in a scene while maintaining unique identifiers for each, by associating their bounding boxes across video frames. This association relies on matching motion and…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Momir Adžemović , Predrag Tadić , Andrija Petrović , Mladen Nikolić

Gait disabilities are among the most frequent worldwide. Their treatment relies on rehabilitation therapies, in which smart walkers are being introduced to empower the user's recovery and autonomy, while reducing the clinicians effort. For…

Computer Vision and Pattern Recognition · Computer Science 2023-05-22 Carolina Gonçalves , João M. Lopes , Sara Moccia , Daniele Berardini , Lucia Migliorelli , Cristina P. Santos

Multi-object tracking (MOT) is the problem of tracking the state of an unknown and time-varying number of objects using noisy measurements, with important applications such as autonomous driving, tracking animal behavior, defense systems,…

Machine Learning · Computer Science 2022-02-17 Juliano Pinto , Georg Hess , William Ljungbergh , Yuxuan Xia , Henk Wymeersch , Lennart Svensson

In recent years, artificial intelligence (AI) based on deep learning (DL) has sparked tremendous global interest. DL is widely used today and has expanded into various interesting areas. It is becoming more popular in cross-subject…

Computer Vision and Pattern Recognition · Computer Science 2019-11-13 Ahmed Ali Hammam , Mona Soliman , Aboul Ella Hassanien

Droplets bouncing on a vibrated liquid bath open ways to methods of manipulating droplets, creating double emulsion and performing pilot wave model experiments. In this work, we focus on the role of the droplet deformations in the vertical…

Fluid Dynamics · Physics 2015-06-12 Denis Terwagne , François Ludewig , Nicolas Vandewalle , Stéphane Dorbolo

Interpreting motion captured in image sequences is crucial for a wide range of computer vision applications. Typical estimation approaches include optical flow (OF), which approximates the apparent motion instantaneously in a scene, and…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Tanner D. Harms , Steven L. Brunton , Beverley J. McKeon

The interaction between planar shock waves and droplets, involved the evolution of high transient unsteady wave structures and the induced cavitation process, occurs widely in nature and industry. In this paper, a combination of theoretical…

Fluid Dynamics · Physics 2023-03-21 Sheng Xu , Wenqi Fan , Wangxia Wu , Wei Wang , Bing Wang

This work analyzes trajectories obtained by YOLO and DeepSORT algorithms of dense emulsion systems simulated by Lattice Boltzmann methods. The results indicate that the individual droplet's moving direction is influenced more by the…

Fluid Dynamics · Physics 2022-06-22 Mihir Durve , Adriano Tiribocchi , Andrea Montessori , Marco Lauricella , Sauro Succi

Tracking droplets in microfluidics is a challenging task. The difficulty arises in choosing a tool to analyze general microfluidic videos to infer physical quantities. The state-of-the-art object detector algorithm You Only Look Once (YOLO)…

Computer Vision and Pattern Recognition · Computer Science 2023-01-20 Mihir Durve , Sibilla Orsini , Adriano Tiribocchi , Andrea Montessori , Jean-Michel Tucny , Marco Lauricella , Andrea Camposeo , Dario Pisignano , Sauro Succi

Deformed droplets are ubiquitous in various industrial applications, such as inkjet printing, lab-on-a-chip devices, and spray cooling, and can fundamentally affect the involved applications both favorably and unfavorably. Here, we employ…

A new class of self-propelled droplets, coined superwalkers, has been shown to emerge when a bath of silicone oil is vibrated simultaneously at a given frequency and its subharmonic tone with a relative phase difference between them (Valani…

Fluid Dynamics · Physics 2021-01-21 Rahil Valani , Jack Dring , Tapio Simula , Anja Slim

The supervision of state-of-the-art multiple object tracking (MOT) methods requires enormous annotation efforts to provide bounding boxes for all frames of all videos, and instance IDs to associate them through time. To this end, we…

Computer Vision and Pattern Recognition · Computer Science 2024-09-27 Mattia Segu , Luigi Piccinelli , Siyuan Li , Luc Van Gool , Fisher Yu , Bernt Schiele

Deep Learning (DL) has brought significant advances to robotics vision tasks. However, most existing DL methods have a major shortcoming, they rely on a static inference paradigm inherent in traditional computer vision pipelines. On the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Stefanos Ginargiros , Nikolaos Passalis , Anastasios Tefas

The disintegration of liquid sheets into ligaments and droplets involves highly transient, multi-scale dynamics that are difficult to quantify from high-speed shadowgraphy images. Identifying droplets, ligaments, and blobs formed during…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Vrushank Ahire , Vivek Kurumanghat , Mudasir Ganaie , Lipika Kabiraj

Understanding the penetration dynamics of intruders in granular beds is relevant not only for fundamental physics, but also for geophysical processes and construction on sediments or granular soils in areas potentially affected by…

Soft Condensed Matter · Physics 2016-09-30 L. Alonso-Llanes , G. Sánchez-Colina , E. Martínez , A. J. Batista-Leyva , R. Toussaint , E. Altshuler

Tactile sensing is crucial for robots aiming to achieve human-level dexterity. Among tactile-dependent skills, tactile-based object tracking serves as the cornerstone for many tasks, including manipulation, in-hand manipulation, and 3D…

Robotics · Computer Science 2025-03-19 Hung-Jui Huang , Michael Kaess , Wenzhen Yuan

The problem of Multiple Object Tracking (MOT) consists in following the trajectory of different objects in a sequence, usually a video. In recent years, with the rise of Deep Learning, the algorithms that provide a solution to this problem…

Computer Vision and Pattern Recognition · Computer Science 2019-11-21 Gioele Ciaparrone , Francisco Luque Sánchez , Siham Tabik , Luigi Troiano , Roberto Tagliaferri , Francisco Herrera

We study the dynamics of a tracer particle, which performs a totally directed random walk in an adsorbed monolayer composed of mobile hard-core particles undergoing continuous exchanges with a vapour phase. In terms of a mean-field-type…

Statistical Mechanics · Physics 2009-10-31 O. Benichou , A. M. Cazabat , M. Moreau , G. Oshanin

A `trajectory' refers to a trace generated by a moving object in geographical spaces, usually represented by of a series of chronologically ordered points, where each point consists of a geo-spatial coordinate set and a timestamp. Rapid…

Machine Learning · Computer Science 2021-11-16 Seongjin Choi