نتایج جستجو برای: lighting conditions

تعداد نتایج: 861023  

2002
Pia Christina Strunk Robert Lickliter Martha Ann Bell Anna Marshal Baker Jack Finney Pia Strunk John Strunk

The purpose of this study was to examine the effects of multi-modal stimulation (differing amounts of light and vocal stimulation) on preterm infants’ behavioral and state organization. Specifically, we looked at the effects that supplemental vocal stimulation (taped female voice) had when varied in amount of exposure (three times a day versus once a day) and when provided in different lighting...

Journal: :Optics express 2011
Y Berencén Josep Carreras O Jambois J M Ramírez J A Rodríguez C Domínguez Charles E Hunt B Garrido

The potential for application of silicon nitride-based light sources to general lighting is reported. The mechanism of current injection and transport in silicon nitride layers and silicon oxide tunnel layers is determined by electro-optical characterization of both bi- and tri-layers. It is shown that red luminescence is due to bipolar injection by direct tunneling, whereas Poole-Frenkel ioniz...

2011
Makoto Fujisawa Jun Miyazaki Hirokazu Kato

In this paper a novel image capturing method for a solution of shading problem in computer vision is proposed. In the experiments, we performed the evaluation about the conditions of environment lighting and additional lighting and proposed controlled lighting method. Image-processing of self quotient image algorithm, histogram equalization, and luminance equalization were used for pre-processi...

2008
Sangiorgi

This paper describes the results deriving from a survey, carried out at regional level about the implementation of safety prevention in agriculture. The main physical, chemical, and biological hazards connected to cattle and pig breeding, important zootechnical activities in Lombardy, were detected and quantified. In particular, the results related to the quantification of risks due to noise, l...

Journal: :Comput. Graph. Forum 2014
Esdras Medeiros Harish Doraiswamy Matthew Berger Cláudio T. Silva

Structured light scanning is ubiquituous in 3D acquisition. It is capable of capturing high geometric detail at a low cost under a variety of challenging scene conditions. Recent methods have demonstrated robustness in the presence of artifacts due to global illumination, such as inter-reflections and sub-surface scattering, as well as imperfections caused by projector defocus. For comparing ap...

2002
James Woodburn

The proper application of a shadow model during the integration of orbit trajectories requires that the solar radiation pressure be sampled adequately during transitions between lighting conditions. An integration scheme is presented in which the lighting condition is held constant across steps of a primary integrator. If the lighting condition changes during that step, then an Encke-like integ...

2003
Shaokang Chen Brian C. Lovell

There are two main approaches for face recognition with variations in lighting conditions. One is to represent images with features that are insensitive to illumination in the first place. The other main approach is to construct a linear subspace for every class under the different lighting conditions. Both of these techniques are successfully applied to some extent in face recognition, but it ...

2018
Sota Shoman Tomohiro Mashita Alexander Plopski Photchara Ratsamee Yuki Uranishi Haruo Takemura

Accurate camera localization is an essential part of tracking systems. However, localization results are greatly affected by illumination. Including data collected under various lighting conditions can improve the robustness of the localization algorithm to lighting variation. However, this is very tedious and time consuming. By using synthesized images it is possible to easily accumulate a lar...

Mehdi Khakzand, Mohsen Faizi, Yousef Gorji Mahlabani,

It is accepted that the visual comfort in schools depends on the quality of the whole visual environment. This leads to the concern upon the quality and quantity of lighting. Currently in Iran, in order to calculate energy transfer for public buildings a coefficient is usually used. This coefficient considers the rate of sunlight energy absorption in these kinds of buildings. To increase the ...

2014
Joanna Wisniewska Mahdi Rezaei Reinhard Klette

Eye gaze detection under challenging lighting conditions is a non-trivial task. Pixel intensity and the shades around the eye region may change depending on the time of day, location, or due to artificial lighting. This paper introduces a lighting-adaptive solution for robust eye gaze detection. First, we propose a binarization and cropping technique to limit our region of interest. Then we dev...

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