Results 11 to 20 of about 1,275,998 (334)

A quick, reliable, and automated method for fat cell sizing

open access: yesJournal of Lipid Research, 2003
Mean diameters of fat cells from abdominal tissues from 31 volunteers were determined by three methods based on fat cell isolation after collagenase digestion and methylene blue staining.
Yourka D. Tchoukalova   +4 more
doaj   +1 more source

Hallucinating dense optical flow from sparse lidar for autonomous vehicles [PDF]

open access: yes, 2018
© 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Moreno-Noguer, Francesc   +2 more
core   +1 more source

Detection of Human Movement Direction Using Optical Flow Analisys on Multiple Camera Angles

open access: yesJurnal Nasional Teknik Elektro, 2021
The active movement of children poses a safety risk in the absence of adult supervision. To reduce the risk of accidents in children, an automatic detection system for the direction of children's movements is crucially needed.
Elvira Sukma Wahyuni   +2 more
doaj   +1 more source

Sparse optical flow regularisation for real-time visual tracking [PDF]

open access: yes, 2013
Optical flow can greatly improve the robustness of visual tracking algorithms. While dense optical flow algorithms have various applications, they can not be used for real-time solutions without resorting to GPU calculations.
Ledda, Alessandro   +2 more
core   +2 more sources

OpenOpticalFlow: An Open Source Program for Extraction of Velocity Fields from Flow Visualization Images

open access: yesJournal of Open Research Software, 2017
This paper describes OpenOpticalFlow, an open source optical flow program in Matlab for extraction of high-resolution velocity fields from various flow visualization images.
Tianshu Liu
doaj   +1 more source

An orbital energy flow and a spin flow at the tight focus

open access: yesКомпьютерная оптика, 2021
We have shown that a reverse energy flow (negative projection of the Poynting vector onto the optical axis) at the sharp focus of an optical vortex with topological charge 2 and left-hand circular polarization arises because the axial spin flow has a ...
S.S. Stafeev
doaj   +1 more source

Perceiving blurry scenes with translational optic flow, rotational optic flow or combined optic flow

open access: yesVision Research, 2019
Perceiving the spatial layout of objects is crucial in visual scene perception. Optic flow provides information about spatial layout. This information is not affected by image blur because motion detection uses low spatial frequencies in image structure.
Hongyuan, Wu   +2 more
openaire   +2 more sources

TV-L1 Optical Flow Estimation

open access: yesImage Processing On Line, 2013
This article describes an implementation of the optical flow estimation method introduced by Zach, Pock and Bischof in 2007. This method is based on the minimization of a functional containing a data term using the L1 norm and a regularization term using
Javier Sánchez Pérez   +2 more
doaj   +1 more source

AM3F-FlowNet: Attention-Based Multi-Scale Multi-Branch Flow Network

open access: yesEntropy, 2023
Micro-expressions are the small, brief facial expression changes that humans momentarily show during emotional experiences, and their data annotation is complicated, which leads to the scarcity of micro-expression data.
Chenghao Fu   +3 more
doaj   +1 more source

3D Wavelet-Based Optical Flow Estimation [PDF]

open access: yesEngineering and Technology Journal, 2007
In this paper, a new algorithm for accurate optical flow estimation using discretewavelet approximation is proposed. The image sequences are always assumed tobe noiseless in the computation of optical flow, since there is always a method thatcan perform ...
Mutaz. AbdulWahab
doaj   +1 more source

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