Results 1 to 10 of about 945,461 (308)

3D DEFORMATION MEASUREMENT OF CONCRETE WALL USING CLOSE-RANGE PHOTOGRAMMETRY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Due to the development of digital image processing, digital photogrammetry is becoming an interesting research area in the field of structural monitoring in civil engineering.
T.-A. Teo
doaj   +1 more source

Digital technique to analyze the wear of the slot after orthodontic treatment through fixed multibracket appliances

open access: yesBMC Oral Health, 2023
Introduction To assess the accuracy, repeatability and reproducibility of a measurement digital technique to quantify the wear of the bracket slot walls of the fixed multibracket appliance after orthodontic treatment with the previous measurement ...
Mabel Daiana Pimentel-García   +4 more
doaj   +1 more source

The study of water-head measurement shown in a single tube manometer by use of easy image-processing technique [PDF]

open access: yesEPJ Web of Conferences, 2019
This study proposes the technique which can perform pressure measurement by the low flow velocity which is performed by flow visualization. The technique is the following. The water level image accompanied by the scale shown in a single tube manometer is
Yokoi Yoshifumi
doaj   +1 more source

High-Linearity High-Resolution Time-of-Flight Linear-Array Digital Image Sensor Using Time-Domain Feedback

open access: yesSensors, 2021
This paper presents a high-linearity high-resolution time-of-flight (ToF) linear-array digital image sensor using a time-domain negative feedback technique.
Juyeong Kim   +3 more
doaj   +1 more source

Human Respiration Rate Measurement with High-Speed Digital Fringe Projection Technique

open access: yesSensors, 2023
This paper proposes a non-contact continuous respiration monitoring method based on Fringe Projection Profilometry (FPP). This method aims to overcome the limitations of traditional intrusive techniques by providing continuous monitoring without ...
Anna Lena Lorenz, Song Zhang
doaj   +1 more source

Digital Extraction Column: Measurement and Modeling Techniques [PDF]

open access: yesChemie Ingenieur Technik, 2020
AbstractThe digitization of extraction columns requires a profound knowledge of the present hydrodynamics/mass transport interaction as well as appropriate measurement techniques for the detection of relevant input and target values. In this article, the different techniques for droplet size distribution as well as concentration determination are ...
Hlawitschka, Mark W.   +5 more
openaire   +2 more sources

Liquid level sensing by use of digital formatted optical spectrum spreading technique [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2009
We propose a novel technique for optical liquid level sensing. The technique takes advantage of an optical spectrum spreading technique and directly measures liquid level with a digital format.
Zhang W.   +3 more
doaj   +1 more source

The digital method of surface reflectance coefficient measurement [PDF]

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2010
The connection between the reflectance of a surface and the coordinate of picture in a photodetector plane is established. The digital method of measurement of reflectance with application of the multielement photodetector is developed.
Ivanchenko I. A.   +2 more
doaj   +2 more sources

Digital image correlation for sensing kinematic fields in manufacturing processes: a review [PDF]

open access: yesJournal of Intelligent Manufacturing and Special Equipment, 2021
Purpose – The purpose of the work is to provide a comprehensive review of the digital image correlation (DIC) technique for those who are interested in performing the DIC technique in the area of manufacturing.
Pingan Zhu, Chao Zhang, Jun Zou
doaj   +1 more source

A method for three-dimensional particle sizing in two-phase flows [PDF]

open access: yes, 2004
A method is devised for true three-dimensional (3D) particle sizing in two-phase systems. Based on a ray-optics approximation of the Mie scattering theory for spherical particles, and under given assumptions, the principle is applicable to intensity data
Gharib, Morteza, Pereira, Francisco
core   +1 more source

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