Results 11 to 20 of about 1,477,728 (279)

Advances and Prospects of Vision-Based 3D Shape Measurement Methods

open access: yesMachines, 2022
Vision-based three-dimensional (3D) shape measurement techniques have been widely applied over the past decades in numerous applications due to their characteristics of high precision, high efficiency and non-contact.
Guofeng Zhang   +3 more
doaj   +1 more source

A structured-light 3D sensor-based shape measurement method for casting allowance evaluation

open access: yesFrontiers in Physics, 2022
The evaluation of casting allowance currently relies on manual operation, which is time-consuming and unstable. The structured-light three-dimensional (3D) sensor-based 3D shape measurement technology is characterized by non-contact, high accuracy, and ...
Hua Luo   +4 more
doaj   +1 more source

Which evaluation criteria of the short-term efficacy can better reflect the long-term outcomes for patients with nasopharyngeal carcinoma?

open access: yesTranslational Oncology, 2022
Purpose: To compare the consistency of one-dimensional Response Evaluation Criteria in Solid Tumors (1D-RECIST), two-dimensional WHO criteria (2D-WHO), and three-dimensional (3D) measurement for therapeutic response assessment of nasopharyngeal carcinoma
Li-qin Ma   +8 more
doaj   +1 more source

AdjustSense: Adaptive 3D Sensing System with Adjustable Spatio-Temporal Resolution and Measurement Range Using High-Speed Omnidirectional Camera and Direct Drive Motor

open access: yesSensors, 2021
Many types of 3D sensing devices are commercially available and were utilized in various technical fields. In most conventional systems with a 3D sensing device, the spatio-temporal resolution and the measurement range are constant during operation ...
Mikihiro Ikura   +4 more
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

Research Status and Prospects on Plant Canopy Structure Measurement Using Visual Sensors Based on Three-Dimensional Reconstruction

open access: yesAgriculture, 2020
Three-dimensional (3D) plant canopy structure analysis is an important part of plant phenotype studies. To promote the development of plant canopy structure measurement based on 3D reconstruction, we reviewed the latest research progress achieved using ...
Jizhang Wang, Yun Zhang, Rongrong Gu
doaj   +1 more source

Compact Measurement Apparatus for 3D Spherical Read Range Characterization of Chipless RFID

open access: yesIEEE Access, 2023
In the literature, chipless RF identification (RFID) tags are mostly characterized at normal incidence, where the 3D spherical reading zone of chipless RFID tags has not been characterized.
Zeshan Ali, Etienne Perret
doaj   +1 more source

Non-Scanning Three-Dimensional Imaging System with a Single-Pixel Detector: Simulation and Experimental Study

open access: yesApplied Sciences, 2020
Existing scanning laser three-dimensional (3D) imaging technology has slow measurement speed. In addition, the measurement accuracy of non-scanning laser 3D imaging technology based on area array detectors is limited by the resolution and response ...
Guang Shi   +3 more
doaj   +1 more source

Cortex-wide response mode of VIP-expressing inhibitory neurons by reward and punishment

open access: yeseLife, 2022
Neocortex is classically divided into distinct areas, each specializing in different function, but all could benefit from reinforcement feedback to inform and update local processing.
Zoltán Szadai   +9 more
doaj   +1 more source

Full-field pulsed magneto-photoelasticity – Experimental Implementation [PDF]

open access: yes, 2006
This paper contains a description of the experimental procedure employed when using a pulsed-magneto-polariscope (PMP) and some initial full-field through-thickness measurements of the stress distribution present in samples containing 3D stresses.
Aben H. K.   +3 more
core   +1 more source

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