Results 21 to 30 of about 1,388,775 (280)

Large Depth-of-Field Integral Microscopy by Use of a Liquid Lens

open access: yesSensors, 2018
Integral microscopy is a 3D imaging technique that permits the recording of spatial and angular information of microscopic samples. From this information it is possible to calculate a collection of orthographic views with full parallax and to refocus ...
Anabel Llavador   +3 more
doaj   +1 more source

Optically gated beating-heart imaging [PDF]

open access: yes, 2014
The constant motion of the beating heart presents an obstacle to clear optical imaging, especially 3D imaging, in small animals where direct optical imaging would otherwise be possible.
Taylor, Jonathan M.
core   +2 more sources

Elastic 3D–2D Image Registration

open access: yesJournal of Mathematical Imaging and Vision, 2022
AbstractWe propose a method to nonrigidly align a three-dimensional (3D) volumetric image with a two-dimensional (2D) planar image representing a projection of the deformed volume. The application in mind comes from biological studies in which 2D intravital microscopy videos of living tissue are recorded, after which the tissue is excised and a more ...
Paul Striewski, Benedikt Wirth
openaire   +2 more sources

Two-photon GCaMP6f imaging of infrared neural stimulation evoked calcium signals in mouse cortical neurons in vivo

open access: yesScientific Reports, 2021
Infrared neural stimulation is a promising tool for stimulating the brain because it can be used to excite with high spatial precision without the need of delivering or inserting any exogenous agent into the tissue. Very few studies have explored its use
Attila Kaszas   +8 more
doaj   +1 more source

Precise Positioning Method of Moving Laser Point Cloud in Shield Tunnel Based on Bolt Hole Extraction

open access: yesRemote Sensing, 2022
Mobile laser scanning technology used for deformation detection of shield tunnel is usually two-dimensional, which is expanded into three-dimensional (3D) through mileage, resulting in low positioning accuracy.
Changqi Ji   +4 more
doaj   +1 more source

3D Point Cloud Generation Based on Multi-Sensor Fusion

open access: yesApplied Sciences, 2022
Traditional precise engineering surveys adopt manual static, discrete observation, which cannot meet the dynamic, continuous, high-precision and holographic fine measurements required for large-scale infrastructure construction, operation and maintenance,
Yulong Han   +5 more
doaj   +1 more source

Adopting multiview pixel mapping for enhancing quality of holoscopic 3D scene in parallax barriers based holoscopic 3D displays [PDF]

open access: yes, 2014
The Autostereoscopic multiview 3D Display is robustly developed and widely available in commercial markets. Excellent improvements are made using pixel mapping techniques and achieved an acceptable 3D resolution with balanced pixel aspect ratio in lens ...
Abdulfatah, O   +4 more
core   +1 more source

Three-Dimensional Linear Restoration of a Tunnel Based on Measured Track and Uncontrolled Mobile Laser Scanning

open access: yesSensors, 2021
Traditional precision measurement adopts discrete artificial static observation, which cannot meet the demands of the dynamic, continuous, fine and high-precision holographic measurement of large-scale infrastructure construction and complex operation ...
Yulong Han, Haili Sun, Ruofei Zhong
doaj   +1 more source

Resorption of retromolar bone grafts after alveolar ridge augmentation—volumetric changes after 12 months assessed by CBCT analysis

open access: yesInternational Journal of Implant Dentistry, 2021
In this pilot study, a volumetric analysis of retromolar onlay bone grafts over a period of 12 months was conducted, using repeated CBCT imaging combined with automated image registration.
Andres Stricker   +5 more
doaj   +1 more source

3D imaging of a nuclear reactor using muography measurements with Micromegas detectors [PDF]

open access: yesEPJ Web of Conferences, 2023
Transmission muography is a non-invasive and non-destructive imaging method which allows to estimate the integrated density of a volume in a given direction (also referred as opacity).
Lefevre Baptiste   +10 more
doaj   +1 more source

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