Results 31 to 40 of about 5,055,269 (189)

Edge Bleeding Artifact Reduction for Shape from Focus in Microscopic 3D Sensing

open access: yesSensors, 2023
Shape from focus enables microscopic 3D sensing by combining it with a microscope system. However, edge bleeding artifacts of estimated depth easily occur in this environment.
Sang-Ho Park   +2 more
doaj   +1 more source

Measuring readmissions: focus on the time factor [PDF]

open access: yesInternational Journal for Quality in Health Care, 2003
To assess the effects of choosing different time-intervals of observation when using unplanned readmissions as an outcome indicator.A conceptual model was developed based on the risk curve. The model assigned readmissions above a background level as 'related' to the earlier episode of illness.
Torhild, Heggestad, Solfrid E, Lilleeng
openaire   +2 more sources

Focus Measure for Synthetic Aperture Imaging Using a Deep Convolutional Network

open access: yesIEEE Access, 2019
Synthetic aperture imaging is a technique that mimics a camera with a large virtual convex lens with a camera array. Objects on the focal plane will be sharp and off the focal plane blurry in the synthesized image, which is the most important effect that
Zhao Pei   +5 more
doaj   +1 more source

Integrating Traditional and Deep Cues for Depth from Focus Using Unfolding Networks

open access: yesMathematics
Depth from focus (DFF) is an optical, passive method that perceives the dense depth map of a real-world scene by exploiting the focus cue through a focal stack, a sequence of images captured at different focal distances.
Muhammad Tariq Mahmood, Khurram Ashfaq
doaj   +1 more source

What motivates you right now? Development of a measure of momentary-chronic regulatory focus

open access: yesMeasurement Instruments for the Social Sciences, 2019
Regulatory focus is a motivational construct that describes humans’ motivational orientation during goal pursuit. It is conceptualized as a chronic, trait-like, as well as a momentary, state-like orientation.
Doris Fay   +2 more
doaj   +1 more source

Hardware-Friendly Laplacian-Based Multi-Focus Image Fusion in DCT Domain for Visual Sensor Network

open access: yesIEEE Access, 2020
Visual sensor network (VSN) requires a multi-focus image or video frame fusion technique involving focus measure computation in the DCT-domain to generate an all-in-focus image.
Sobhan Kanti Dhara   +2 more
doaj   +1 more source

Mahler measure under variations of the base group

open access: yes, 2007
We study properties of a generalization of the Mahler measure to elements in group rings, in terms of the Lueck-Fuglede-Kadison determinant. Our main focus is the variation of the Mahler measure when the base group is changed. In particular, we study how
Dasbach, Oliver T., Lalin, Matilde N.
core   +2 more sources

Image Quality Assessment for Performance Evaluation of Focus Measure Operators [PDF]

open access: yesMehran University Research Journal of Engineering and Technology, 2015
This paper presents the performance evaluation of eight focus measure operators namely Image CURV (Curvature), GRAE (Gradient Energy), HISE (Histogram Entropy), LAPM (Modified Laplacian), LAPV (Variance of Laplacian), LAPD (Diagonal Laplacian), LAP3 ...
Farida Memon   +2 more
doaj  

Towards a theory of area in homogeneous groups

open access: yes, 2018
A general approach to compute the spherical measure of submanifolds in homogeneous groups is provided. We focus our attention on the homogeneous tangent space, that is a suitable weighted algebraic expansion of the submanifold. This space plays a central
Magnani, Valentino
core   +1 more source

In vivo volumetric imaging of calcium and glutamate activity at synapses with high spatiotemporal resolution

open access: yesNature Communications, 2021
Adaptive optics (AO) corrects sample aberrations and allows high spatial resolution at depth in vivo. Here the authors report an AO method for Bessel focus; they apply AO Bessel focus scanning fluorescence microscopy to volumetric imaging and measure ...
Wei Chen   +6 more
doaj   +1 more source

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