نتایج جستجو برای: radiance

تعداد نتایج: 3741  

2013
Sabrina Schnitt Thomas Ruhtz Jürgen Fischer Franz Hölker Christopher C. M. Kyba

The stability of radiance measurements taken by the Sky Quality Meter (SQM)was tested under rapidly changing temperature conditions during exposure to a stable light field in the laboratory. The reported radiance was found to be negatively correlated with temperature, but remained within 7% of the initial reported radiance over a temperature range of -15 °C to 35 °C, and during temperature chan...

2010
Grace Chang

The long-term goal of “Radiance in a Dynamic Ocean (RaDyO): Radiance and Visibility as Affected by Inherent Optical Properties” is to perform detailed investigations of inherent optical properties (IOPs) and the effects of IOP variability on underwater radiance and visibility. As part of this effort, Sea Engineering, Inc. (SEI) will also provide all data from the Scripps Pier and Santa Barbara ...

2013
Valérie Laurent

Page Chapter 1 Introduction 1 Chapter 2 Estimating forest variables from top-of-atmosphere 15 radiance satellite measurements using coupled radiative transfer models Chapter 3 Inversion of a coupled canopy-atmosphere model using 37 multi-angular top-of-atmosphere radiance data: A forest case study Chapter 4 A Bayesian object-based approach for estimating 59 vegetation biophysical and biochemica...

2006
Peter-Pike Sloan

Normal mapping is a variant of bump mapping that is commonly used in computer games. It models complex surface variations by explicitly storing a surface normal in a texture map. However, it has not been used with precomputed radiance transfer (PRT), a technique for modeling an object’s response to a parameterized model of lighting, which enables interactive rendering of complex global illumina...

2016
U. Amato V. Cuomo R. Guzzi M. Macchiato R. Rizzi C. Serio

2014 There are several models to compute instantaneous clear sky solar radiation and they require the precise knowledge of meteorologically relevant parameters as the turbidity and the optical thickness of water vapour and ozone. However, in many cases only a mean radiance spectrum is wanted. In this paper we introduce and analyse a simplified method which permits to calculate the daily average...

2007
André Hinkenjann Thorsten Roth

We present our work on phase space rendering. Every radiance sample in space has a location and a direction from which it is received. These degrees of freedom make up a phase space. The rendering problem of generating a discrete image from single radiance values is reduced to reconstruct a continuous radiance function from sparse samples in its phase space. The problem of reconstruction in a s...

2000
Danijel Skocaj Ales Leonardis

We present a novel approach to acquisition of range images of objects with non-uniform albedo using a structured light sensor. The main idea is to systematically vary the intensity of the light projector and to form high dynamic scale radiance maps. The range images are then formed from these radiance maps. We tested the method on the objects which have surfaces with very different reflectance ...

2015
Zhao Hang Boxin Shi Christy Fernandez-Cull Sai-Kit Yeung Ramesh Raskar Hang Zhao

This paper presents a novel framework to extend the dynamic range of images called Unbounded High Dynamic Range (UHDR) photography with a modulo camera. A modulo camera could theoretically take unbounded radiance levels by keeping only the least significant bits. We show that with limited bit depth, very high radiance levels can be recovered from a single modulus image with our newly proposed u...

One of the basic obstacles in the deployment of clean technologies such as wind turbines or PV modules is their intermittent nature due to dependency on the wind speed and solar radiance. In fact, the authors in this paper aim to investigate the effect of clean technologies such as wind turbines and PV modules on the total and individual costs of the distribution system. In order to model the u...

2014
Natalia Merkulova Klaus G. Melchers Martin Kleinmann

Knowing to what extent applicant reactions are related to stable individual differences and not only to characteristics of a selection procedure is important for the design and administration of the selection procedure and for dealing with applicants. The aim of this study was to explore relationships between individual differences (Big Five, core selfevaluations, trait affectivity, and general...

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