Results 21 to 30 of about 1,146,771 (321)

Optimizing Image Focus for Shape From Focus Through Locally Weighted Non-Parametric Regression

open access: yesIEEE Access, 2019
Shape from focus is a passive optical technique that uses multiple images with different focus levels. To compute the sharpness of each pixel in the image sequence, obtained by translating the object plane at a constant step size along the optical axis ...
Hoon-Seok Jang   +2 more
doaj   +1 more source

Three dimensional acoustic imaging technology of buried object detection [PDF]

open access: yesMATEC Web of Conferences, 2019
With the development of 21th century seabed imaging sonar technology, more and more attention is paid to buried object detection technology in the world.
Cong Weihua, Zhou Lisheng
doaj   +1 more source

Phaseless three-dimensional optical nano-imaging [PDF]

open access: yes, 2009
We propose a method for optical nano-imaging in which the structure of a three-dimensional inhomogeneous medium may be recovered from far-field power measurements.
Govyadinov, Alexander A.   +2 more
core   +3 more sources

Three-dimensional imaging and scanning: Current and future applications for pathology

open access: yesJournal of Pathology Informatics, 2017
Imaging is vital for the assessment of physiologic and phenotypic details. In the past, biomedical imaging was heavily reliant on analog, low-throughput methods, which would produce two-dimensional images.
Navid Farahani   +7 more
doaj   +1 more source

Jitter Elimination in Shape Recovery by using Adaptive Neural Network Filter

open access: yesSensors, 2019
Three-dimensional (3D) cameras are expensive because they employ additional charged coupled device sensors and optical elements, e.g., lasers or complicated scanning mirror systems.
Sung-An Lee   +2 more
doaj   +1 more source

Correlation Plenoptic Imaging With Entangled Photons

open access: yesTechnologies, 2016
Plenoptic imaging is a novel optical technique for three-dimensional imaging in a single shot. It is enabled by the simultaneous measurement of both the location and the propagation direction of light in a given scene.
Francesco V. Pepe   +4 more
doaj   +1 more source

Single shot three-dimensional imaging of dilute atomic clouds [PDF]

open access: yes, 2014
Light field microscopy methods together with three dimensional (3D) deconvolution can be used to obtain single shot 3D images of atomic clouds. We demonstrate the method using a test setup which extracts three dimensional images from a fluorescent $^{87}$
Kasevich, Mark, Sakmann, Kaspar
core   +2 more sources

The diagnostic accuracy of 3D ultrasound compared to 2D ultrasound and MRI in the assessment of deep myometrial invasion in endometrial cancer patients: A systematic review

open access: yesTaiwanese Journal of Obstetrics & Gynecology, 2022
Endometrial cancer is a common malignancy in women worldwide, with myometrial invasion (MI) being an important prognostic factor, usually assessed via imaging techniques.
Apostolos Ziogas   +6 more
doaj   +1 more source

Three Dimensional Electrical Impedance Tomography [PDF]

open access: yes, 1996
The electrical resistivity of mammalian tissues varies widely and is correlated with physiological function. Electrical impedance tomography (EIT) can be used to probe such variations in vivo, and offers a non-invasive means of imaging the internal ...
A Albert   +27 more
core   +1 more source

Three-dimensional imaging of dislocations [PDF]

open access: yesNature, 2013
arising from C.-C. Chen et al. , 74–77 (2013)10.1038/nature12009 At first sight, the achievement of determining atom positions in three dimensions appears spectacular1. Chen and colleagues1 apply a form of tomographic reconstruction to a tilt series of annular dark field (ADF) images of crystalline ...
Peter Rez, Michael Treacy
openaire   +3 more sources

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