نتایج جستجو برای: distribution fitting

تعداد نتایج: 648860  

2005
Hossein Ragheb Edwin R. Hancock

Abstract Recent work has shown how the Fresnel coefficient can be used to improve the predictions of the Beckmann-Kirchhoff (BK) model for moderatelyrough surfaces. This paper aims to compare the predictions of a number of alternative models including those of Lafortune et al. (LFTG) and Oren-Nayar (ON) against the BRDF measurements from the CUReT database. Excluding the specular reflectance co...

2017
Indranil Gupta

In this thesis, we study the problem of choosing among partitioning strategies in distributed graph processing systems. To this end, we evaluate and characterize both the performance and resource usage of different partitioning strategies under various popular distributed graph processing systems, applications, input graphs, and execution environments. Through our experiments, we found that no ...

2006
Philipus J. Patty

We compare results for the number-weighted mean radius and polydispersity obtained either by directly fitting number distributions to dynamic light scattering (DLS) data or by converting results obtained by fitting intensityweighted distributions. We find that results from fits using number distributions are angle independent. We find that converting intensity-weighted distributions is not alwa...

Journal: :Applied optics 2006
Philipus J Patty Barbara J Frisken

We compare results for the number-weighted mean radius and polydispersity obtained either by directly fitting number distributions to dynamic light-scattering data or by converting results obtained by fitting intensity-weighted distributions. We find that results from fits using number distributions are angle independent and that converting intensity-weighted distributions is not always reliabl...

Journal: :Monthly Notices of the Royal Astronomical Society 2012

2006
Yunhan Dong

This report studies the spatial distribution of X-band, high resolution and high grazing angle polarimetric sea clutter data. The K distribution usually provides a good fit for the distribution of the VV polarised data. The HH polarised data is spikiest and its distribution exhibits a sudden departure from the K distribution in the tail region, which usually requires the KA or the similar distr...

2007
William A.P. Smith Edwin R. Hancock

In this paper we show how to estimate facial surface reflectance properties (a slice of the BRDF and the albedo) in conjunction with facial shape from a single image. We show how an estimate of the surface reflectance function can be made by fitting a curve to the scattered and noisy reflectance samples provided by the estimated shape. We present a novel statistical face shape constraint which ...

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