نتایج جستجو برای: lighting characteristics

تعداد نتایج: 676385  

1997
Katja Daubert Hartmut Schirmacher François X. Sillion George Drettakis

Lighting algorithms for outdoor scenes suffer from the sheer geometric and lighting complexity of such environments. In this paper we introduce an efficient, hierarchical solution to the problem of outdoor illumination. Data structures and sampling algorithms are presented, permitting the integration of complex and natural objects in a hierarchical radiosity simulation system. This new approach...

Journal: :Computer Vision and Image Understanding 2012
Michèle Gouiffès Christophe Collewet Christine Fernandez-Maloigne Alain Trémeau

Since modeling reflections in image processing is a difficult task, most computer vision algorithms assume that objects are Lambertian and that no lighting change occurs. Some photometric models can partly answer this issue by assuming that the lighting changes are the same at each point of a small window of interest. Through a study based on specular reflection models, we explicit the assumpti...

ژورنال: ارگونومی 2017

Introduction: Few studies were conducted to determine the effects of lighting on cognitive performance. However, they could not reach a decisive conclusion. This study investigated cognitive performance of university students exposed to different levels of lighting under laboratory conditions. Methods: In this experimental study, 33 subjects (age range 19-26 years) performed cognitive tests....

2010
Aleksanteri Ekrias Liisa Halonen

The work starts with a short introduction concerning the history of road lighting, outlining the trends and changes that have taken place in road lighting research during the past century. The introduction is followed by a review of trends, directions, and problems in current road lighting research and practice. The following part of the work introduces an advanced approach to road lighting mea...

Journal: :Korean Institute of Interior Design Journal 2013

Journal: :Journal of the Illuminating Engineering Institute of Japan 1997

ژورنال: ارگونومی 2015
حاجی اکبری, محمد, حسینی, سیده خدیجه, حیدری مقدم, رشید, زارع, راضیه, کرمی, سمانه, گلمحمدی, رستم,

Introduction: In an educational environment, the quality of vision is integral to educational progress. Creating visual comfort and increasing efficiency and the desire to study are among the benefits of adjusting the lighting in classrooms and preventing visual impairment in the students. The present study was conducted to evaluate the degree of internal lighting in girls' schools across ...

2010
Michael Siminovitch

This paper reviews the key market and technology drivers associated with the emerging application of light emitting diode (LED) technology in the lighting of buildings. The primary focus of this paper is to present and discuss the evolving marketplace, the technology, and how current market and regulatory pressures will form the key drivers for nearand long-term market penetration for emerging ...

2004
Thilo Weigel Dapeng Zhang Klaus Rechert Bernhard Nebel

For real time object recognition and tracking often color-based methods are used. While these methods are very efficient, they usually dependent heavily on lighting conditions. In this paper we present a robust and efficient vision system for the table soccer robot KiRo. By exploiting knowledge about invariant characteristics of the table soccer game, the system is able to adapt to changing lig...

Journal: :International Design Journal (Print) 2023

To successfully achieve the various lighting functions within a space, interior designer must manipulate light and control its properties such as direction, intensity, shape, distribution, color, smoothness, movement across space to create configure environment. In order these characteristics, it is vital keep pace with modern technologies their impact on physical environment, thus fully respon...

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