Results 41 to 50 of about 1,275,998 (334)

Photometric detection in flow analysis systems using integrated PEDDs [PDF]

open access: yes, 2005
A novel inexpensive optical-sensing technique has been developed for colorimetric flow analysis. This sensing system employs two LEDs whereby one is used as the light source and the other as a light detector.
Diamond, Dermot   +2 more
core   +2 more sources

Optic flow induced nystagmus [PDF]

open access: yesJournal of Neurology, Neurosurgery & Psychiatry, 2005
A new form of nystagmus is described in this paper: optic flow induced nystagmus (OFN). Optic field flow, for example when driving or viewing films on a large screen, triggered non-fatiguable upbeat nystagmus. This type of nystagmus could not be induced by vestibular stimuli, positioning, or self motion.
A, Petzold, G T, Plant
openaire   +2 more sources

Direct Optical-Flow-Aware Computational Framework for 3D Reconstruction

open access: yesIEEE Access, 2019
In this paper, a direct computational method is presented which combines optical flow and structure from motion (SfM) by putting the SfM problem in the framework of optical flow estimation. In other word, the optical flow is reparametrized in term of the
Huijuan Hu, Pei Chen
doaj   +1 more source

Double-Cycle Alternating-Flow Diode Pumped Potassium Vapor Laser

open access: yesPhotonics
A novel double-cycle alternating-flow diode-pumped potassium vapor laser is proposed, theoretically modeled and simulated. The results show that the optical-to-optical efficiency of the laser increases with increasing gas flow rates, although at high ...
Songyang Liu   +4 more
doaj   +1 more source

SegFlow: Joint Learning for Video Object Segmentation and Optical Flow

open access: yes, 2017
This paper proposes an end-to-end trainable network, SegFlow, for simultaneously predicting pixel-wise object segmentation and optical flow in videos. The proposed SegFlow has two branches where useful information of object segmentation and optical flow ...
Cheng, Jingchun   +3 more
core   +1 more source

Decomposition of Optical Flow on the Sphere [PDF]

open access: yes, 2014
We propose a number of variational regularisation methods for the estimation and decomposition of motion fields on the $2$-sphere. While motion estimation is based on the optical flow equation, the presented decomposition models are motivated by recent ...
Kirisits, Clemens   +2 more
core   +1 more source

On event-based optical flow detection

open access: yesFrontiers in Neuroscience, 2015
Event-based sensing, i.e. the asynchronous detection of luminance changes, promises low-energy, high dynamic range, and sparse sensing. This stands in contrast to whole image frame-wise acquisition by standard cameras. Here, we systematically investigate
Tobias eBrosch   +2 more
doaj   +1 more source

PWC-Net: CNNs for Optical Flow Using Pyramid, Warping, and Cost Volume

open access: yes, 2018
We present a compact but effective CNN model for optical flow, called PWC-Net. PWC-Net has been designed according to simple and well-established principles: pyramidal processing, warping, and the use of a cost volume. Cast in a learnable feature pyramid,
Kautz, Jan   +3 more
core   +1 more source

Variational-Bayes Optical Flow [PDF]

open access: yesJournal of Mathematical Imaging and Vision, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chantas, Giannis   +2 more
openaire   +1 more source

DELP Treatment on Vision and Retinal Microcirculation in Patients With Acute Ischemic Stroke: Report of Five Cases and Literature Review

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background The delipid extracorporeal lipoprotein filter from plasma (DELP) treatment can effectively reduce blood lipid, increase blood flow, and improve neurological deficits in patients with acute ischemic stroke (AIS). However, its effect on vision and retinal microcirculation in stroke patients has never been reported.
Ning Li   +9 more
wiley   +1 more source

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