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Higher order mode (HOM) beam position monitors (BPM) are being developed for the 3.9 GHz third harmonic superconducting accelerating cavities at FLASH. The transverse beam position in a cavity can be determined utilizing beam-excited HOMs…

Accelerator Physics · Physics 2013-05-23 P. Zhang , N. Baboi , T. Flisgen , U. van Rienen , R. M. Jones , I. R. R. Shinton

Human pose estimation - the process of recognizing a human's limb positions and orientations in a video - has many important applications including surveillance, diagnosis of movement disorders, and computer animation. While deep learning…

Computer Vision and Pattern Recognition · Computer Science 2019-02-11 Steven Schwarcz , Thomas Pollard

The Hong-Ou-Mandel (HOM) effect is analyzed for photons in a modified Mach-Zehnder setup with two particles experiencing different gravitational potentials, which are later recombined using a beam-splitter. It is found that the HOM effect…

General Relativity and Quantum Cosmology · Physics 2021-01-29 Marco Rivera-Tapia , Marcel I. Yáñez Reyes , A. Delgado , G. Rubilar

We develop a two-dimensional high-order numerical scheme that exactly preserves and captures the moving steady states of the shallow water equations with topography or Manning friction. The high-order accuracy relies on a suitable…

Numerical Analysis · Mathematics 2022-02-24 Victor Michel-Dansac , Christophe Berthon , Stéphane Clain , Françoise Foucher

Autonomous navigation is one of the key requirements for every potential application of mobile robots in the real-world. Besides high-accuracy state estimation, a suitable and globally consistent representation of the 3D environment is…

Robotics · Computer Science 2024-03-05 Simon Boche , Sebastián Barbas Laina , Stefan Leutenegger

Recently, regression-based methods have dominated the field of 3D human pose and shape estimation. Despite their promising results, a common issue is the misalignment between predictions and image observations, often caused by minor joint…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Tom Wehrbein , Bodo Rosenhahn , Iain Matthews , Carsten Stoll

We develop a fully spatio-temporal numerical model, based on stochastic simulations, simulating the generation of spatio-temporal multimode spontaneous parametric down conversion, the propagation of the signal and idler beams through a…

Quantum Physics · Physics 2019-07-31 Fabrice Devaux , Alexis Mosset , Eric Lantz

With the explosive growth of available training data, single-image 3D human modeling is ahead of a transition to a data-centric paradigm. A key to successfully exploiting data scale is to design flexible models that can be supervised from…

Computer Vision and Pattern Recognition · Computer Science 2024-12-11 István Sárándi , Gerard Pons-Moll

In this work, we present a novel global descriptor termed stable triangle descriptor (STD) for 3D place recognition. For a triangle, its shape is uniquely determined by the length of the sides or included angles. Moreover, the shape of…

Computer Vision and Pattern Recognition · Computer Science 2023-02-23 Chongjian Yuan , Jiarong Lin , Zuhao Zou , Xiaoping Hong , Fu Zhang

When quantum state amplitudes interfere, surprising non-classical features emerge which emphasis the roles of indistinguishability and discreteness in quantum mechanics. A famous example in quantum optics is the Hong Ou Mandel interference…

Model-based approaches to 3D hand tracking have been shown to perform well in a wide range of scenarios. However, they require initialisation and cannot recover easily from tracking failures that occur due to fast hand motions. Data-driven…

Computer Vision and Pattern Recognition · Computer Science 2015-10-28 Georg Poier , Konstantinos Roditakis , Samuel Schulter , Damien Michel , Horst Bischof , Antonis A. Argyros

BACKGROUND AND OBJECTIVE: Patient positioning is a crucial step in radiation therapy, for which non-invasive methods have been developed based on surface reconstruction using optical 3D imaging. However, most solutions need expensive…

Computer Vision and Pattern Recognition · Computer Science 2021-03-24 Hamid Sarmadi , Rafael Muñoz-Salinas , M. Álvaro Berbís , Antonio Luna , Rafael Medina-Carnicer

Due to the complexity of the human body and its neuromuscular stabilization, it has been challenging to efficiently and accurately predict human motion and capture posture while being driven. Existing simple models of the seated human body…

Human-Computer Interaction · Computer Science 2023-06-22 Raj Desai , Marko Cvetković , Junda Wu , Georgios Papaioannou , Riender Happee

Accurate camera models are essential for photogrammetry applications such as 3D mapping and object localization, particularly for long distances. Various stereo-camera based 3D localization methods are available but are limited to few…

Computer Vision and Pattern Recognition · Computer Science 2025-12-22 Ami Pandat , Punna Rajasekhar , G. Aravamuthan , Gopika Vinod , Rohit Shukla

3D human pose estimation in multi-view operating room (OR) videos is a relevant asset for person tracking and action recognition. However, the surgical environment makes it challenging to find poses due to sterile clothing, frequent…

Computer Vision and Pattern Recognition · Computer Science 2023-08-31 Beerend G. A. Gerats , Jelmer M. Wolterink , Ivo A. M. J. Broeders

Two-photon intensity correlation of the Hong-Ou-Mandel (HOM) effect has been intensively studied over the last several decades for one of the most interesting quantum features. According to the particle nature of quantum mechanics,…

Quantum Physics · Physics 2022-11-22 B. S. Ham

The process of tracking human anatomy in computer vision is referred to pose estimation, and it is used in fields ranging from gaming to surveillance. Three-dimensional pose estimation traditionally requires advanced equipment, such as…

Computer Vision and Pattern Recognition · Computer Science 2022-08-25 Alice Ruget , Max Tyler , Germán Mora Martín , Stirling Scholes , Feng Zhu , Istvan Gyongy , Brent Hearn , Steve McLaughlin , Abderrahim Halimi , Jonathan Leach

We propose embodied scene-aware human pose estimation where we estimate 3D poses based on a simulated agent's proprioception and scene awareness, along with external third-person observations. Unlike prior methods that often resort to…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Zhengyi Luo , Shun Iwase , Ye Yuan , Kris Kitani

3D occupancy prediction aims to infer dense, voxel-wise scene semantics from sensor observations, where the 2D-to-3D view transformation serves as a crucial step in bridging image features and volumetric representations. Most previous…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Yuan Wu , Zhiqiang Yan , Jiawei Lian , Zhengxue Wang , Jian Yang

We extensively discuss the Hong-Ou-Mandel experiment taking an original phase-space-based perspective. For this, we analyze time and frequency variables as quantum continuous variables in perfect analogy with position and momentum of…

Quantum Physics · Physics 2022-11-09 Nicolas Fabre , Maria Amanti , Florent Baboux , Arne Keller , Sara Ducci , Pérola Milman