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This paper presents a method for improved analysis of objects with an axial symmetry using X-ray Computed Tomography (CT). Cylindrical coordinates about an axis fixed to the object form the most natural base to check certain characteristics…

Image and Video Processing · Electrical Eng. & Systems 2020-10-06 Wannes Goethals , Marjolein Heyndrickx , Matthieu Boone

Estimation of thermal contact resistances between cylinders can be achieved using heating on the cross sections by a laser spot and measurement of the temperature response by IR thermography. This type of measurement makes it possible to…

Medical Physics · Physics 2025-11-25 Thomas Lahens , Alain Sommier , Marie-Marthe Groz , Jean-Christophe Batsale

Accurate reconstruction of both the geometric and topological details of a 3D object from a single 2D image embodies a fundamental challenge in computer vision. Existing explicit/implicit solutions to this problem struggle to recover…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Mohammad Samiul Arshad , William J. Beksi

Physical attacks form one of the most severe threats against secure computing platforms. Their criticality arises from their corresponding threat model: By, e.g., passively measuring an integrated circuit's (IC's) environment during a…

Cryptography and Security · Computer Science 2023-09-19 Xhani Marvin Saß , Thilo Krachenfels , Frederik Dermot Pustelnik , Jean-Pierre Seifert , Christian Große , Frank Altmann

Thermal Infrared (TIR) technology involves the use of sensors to detect and measure infrared radiation emitted by objects, and it is widely utilized across a broad spectrum of applications. The advancements in object detection methods…

Computer Vision and Pattern Recognition · Computer Science 2025-05-19 Jinke Li , Yue Wu , Xiaoyan Yang

Optical coherence tomography (OCT) is a high-resolution three-dimensional imaging technique that enables non-destructive measurements of surface and subsurface microstructures. Recent developments of OCT operating in the mid-infrared (MIR)…

Optics · Physics 2020-07-15 Ivan Zorin , Rong Su , Bettina Heise , Bernhard Lendl , Markus Brandstetter

We present a scalable and efficient framework for the inference of spatially-varying parameters of continuum materials from image observations of their deformations. Our goal is the nondestructive identification of arbitrary damage,…

Numerical Analysis · Mathematics 2024-08-21 Joseph Kirchhoff , Dingcheng Luo , Thomas O'Leary-Roseberry , Omar Ghattas

A novel reconstruction method is introduced for the severely ill-posed inverse problem of limited-angle tomography. It is well known that, depending on the available measurement, angles specify a subset of the wavefront set of the unknown…

Image and Video Processing · Electrical Eng. & Systems 2023-10-26 Elli Karvonen , Matti Lassas , Pekka Pankka , Samuli Siltanen

The InfraRed Imaging Spectrograph (IRIS) is a first-light instrument for the Thirty Meter Telescope (TMT). It combines a diffraction limited imager and an integral field spectrograph. This paper focuses on the electrical system of IRIS.…

Instrumentation and Methods for Astrophysics · Physics 2018-08-24 A. C. Trapp , James Larkin , Ken Magnone , Timothee Greffe , Tim Hardy , Jennifer Dunn , Eric Chisholm , Chris Johnson , Ryuji Suzuki

White light interferometry (WLI) can be used to obtain surface morphology information on dimensional scale of millimeters with lateral resolution as good as ~1 {\mu}m and depth resolution down to 1 nm. By performing true three-dimensional…

Materials Science · Physics 2012-04-05 S. V. Baryshev , A. V. Zinovev , C. E. Tripa , R. A. Erck , I. V. Veryovkin

Over the past decade, lidars have become a cornerstone of robotics state estimation and perception thanks to their ability to provide accurate geometric information about their surroundings in the form of 3D scans. Unfortunately, most of…

Robotics · Computer Science 2024-10-08 Cedric Le Gentil , Raphael Falque , Teresa Vidal-Calleja

The notion of local intrinsic dimensionality (LID) is an important advancement in data dimensionality analysis, with applications in data mining, machine learning and similarity search problems. Existing distance-based LID estimators were…

Machine Learning · Computer Science 2023-07-14 Miloš Savić , Vladimir Kurbalija , Miloš Radovanović

We would like to present a comprehensive study on the classification of iron ore pellets, aimed at identifying quality violations in the final product, alongside the development of an innovative imagebased measurement method utilizing the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Artem Solomko , Oleg Kartashev , Andrey Golov , Mikhail Deulin , Vadim Valynkin , Vasily Kharin

Interface localization-delocalization transitions (ILDT) occur in two-phase fluids confined in a slit with competing preferences of the walls for the two fluid phases. At low temperatures the interface between the two phases is localized at…

Soft Condensed Matter · Physics 2019-01-01 Svyatoslav Kondrat , Oleg A. Vasilyev , S. Dietrich

Most of the existing methods for estimating the local intrinsic dimension of a data distribution do not scale well to high-dimensional data. Many of them rely on a non-parametric nearest neighbors approach which suffers from the curse of…

Unsupervised intrinsic image decomposition (IID) is the process of separating a natural image into albedo and shade without these ground truths. A recent model employing light detection and ranging (LiDAR) intensity demonstrated impressive…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Shogo Sato , Takuhiro Kaneko , Kazuhiko Murasaki , Taiga Yoshida , Ryuichi Tanida , Akisato Kimura

Infrared Imaging Spectrograph (IRIS) is the first light instrument for the Thirty Meter Telescope (TMT) that consists of a near-infrared (0.84 to 2.4 micron) imager and integral field spectrograph (IFS) which operates at the…

Understanding the shape and structure of objects is undoubtedly extremely important for object recognition, but the most common pattern recognition method currently used is machine learning, which often requires a large number of training…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Wei Hui , Liping Yu , Yiran Wei

Optical diffraction tomography (ODT) is an interferometric microscopy technique capable of measuring 3-D refractive index (RI) distribution of transparent samples. Multiple 2-D holograms of a sample illuminated with various angles are…

This document describes the theory used for the calculation of track geometric irregularities on a Track Geometry Measuring System (TGMS) to be installed in railway vehicles. The TGMS includes a computer for data acquisition and process, a…

Image and Video Processing · Electrical Eng. & Systems 2020-08-11 José L. Escalona