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Digital Shearography for NDT: Phase Measurement Technique and Recent Developments

open access: yesApplied Sciences, 2018
Composite materials have seen widespread use in the aerospace industry and are becoming increasingly popular in the automotive industry due to their high strength and low weight characteristics. The increasing usage of composite materials has resulted in
Qihan Zhao   +5 more
doaj   +3 more sources

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

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

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

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

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

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

THE DEVELOPMENT OF IMAGE PROCESSING METHOD ON THE AUTOMATIC READING SYSTEM OF THE GLASS THERMOMETER USING A DIGITAL CAMERA

open access: yesSpektra: Jurnal Fisika dan Aplikasinya, 2021
The reading performance of an analog thermometer, Liquid in Glass Thermometer (LiGT), can be improved using a digital camera. The aim is to minimize the human error on the reading of LiGT and increase the accuracy of temperature measurement results.
Gianto Gianto   +3 more
doaj   +1 more source

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