نتایج جستجو برای: radiance

تعداد نتایج: 3741  

2011
Craig S. Schwartz Zhiquan Liu

As there are few in situ observations in and around Antarctica, it is important to assess how assimilating remotely-sensed observations, such as satellite-observed radiances, can fill this observational gap. Thus, a month-long study was conducted over the Antarctic to examine forecast and analysis sensitivity to the assimilation of microwave radiance measurements. Several experiments were confi...

2004
E. M. ROLLIN

This paper reports on a preliminary experiment to undertake in-flight radiance calibration validation (cal-val) of the NERC CASI. The approach involved comparing CASI radiance values of a single, wellcharacterised target with synchronised measurements of target radiance obtained at the ground with a calibrated spectroradiometer. CASI data were obtained at two altitudes: 853m and 3109m, in spati...

1998
J. Vida

Having in mind the high complexity of the sky radiance distribution, the Commission of the European Communities, in the frame of the Solar Energy R&D in the European Community Programme, developed among other related fields of research a clear sky radiance model. This model, the so-called EC-Model, was intended for the estimation of the diffuse irradiance falling on an inclined surface by integ...

2015
Ioannis Gkioulekas Bruce Walter Edward H. Adelson Todd Zickler

In the supplementary material, we provide additional results and discussion of several parts of the main paper. 1. Effects of Non-Idealities In this section, we show simulations for studying the effects of non-idealities of the wedge geometry on edge radiance profiles. These simulations complement the discussion fo Section 4 of the main paper. Figures 1 and 2 show simulations for the effect of ...

2007
Gregory J. Ward

This document describes a visual comfort calculation developed by the LESO group at EPFL during Spring of 1991. The calculation uses the RADIANCE synthetic imaging system [Ward90] to compute luminance values from a computer model of an architectural space and the lighting and daylighting of that space. These luminance values are then applied to a selected glare calculation procedure to arrive a...

2003
Teemu Mäki-Patola

This paper describes a method for rendering interreflections, self-induced shadows and caustics in real-time in a general low-frequency lighting environment. The method handles environment and area lighting and glossy as well as diffuse objects. The lighting environment is projected onto a lowfrequency spherical harmonic basis. Before the rendering a transfer vector (diffuse case) or a transfer...

Journal: :Aesthetic Surgery Journal 2003

Journal: :Computer Graphics Forum 2022

Recent advances in neural rendering indicate immense promise for architectures that learn light transport, allowing efficient of global illumination effects once such methods are trained. The training phase these can be seen as a form pre-computation, which has long standing history Computer Graphics. In particular, Pre-computed Radiance Transfer (PRT) achieves real-time by freezing some variab...

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

2006
Katrien Jacobs

Illumination for mixed reality consists of simulating the illumination of 3D scenes composed with real and virtual 3D objects. Current research into illumination methods for mixed reality focuses on im­ proving the quality of the simulated illumination, while assuming that the required input data, the scene geometry and radiance, can be accurately acquired. This thesis provides methods that red...

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