نتایج جستجو برای: height difference of surfaces
تعداد نتایج: 21193468 فیلتر نتایج به سال:
We propose a methodology for local gravity field modelling fromgravity data using spherical radial basis functions. The methodology comprises two steps: in step 1, gravity data (gravity anomalies and/or gravity disturbances) are used to estimate the disturbing potential using least-squares techniques. The latter is represented as a linear combination of spherical radial basis functions (SRBFs)....
The failure of roughness parameters to predict surface properties stems from their inherent scale-dependence; in other words, the measured value depends on how parameter was measured. Here we take advantage this scale-dependence develop a new framework for characterizing rough surfaces: Scale-Dependent Roughness Parameters (SDRP) analysis, which yields slope, curvature, and higher-order derivat...
In this work, optimization of the nanopillar arrays and thin films coated on silicon substrate has been investigated in order to minimize optical reflection loss from surface. Nano-pillars's height, incline angle, array properties are systematically optimized. Full field Finite Difference Time Domain method is used simulate EM fields calculate modified nanostructured surfaces 400nm-1100nm spect...
The refinement of the features extracted from image data is a key issue in automated building extraction since feature extraction algorithms often result in incomplete features. This paper describes a method for the integration of image and Lidar height data, which leads to the refinement of initial image regions and the reconstruction of the parametric forms of roof planes. Region refinement i...
There exist many computer graphics techniques which could achieve high quality tree generation. However, only a few works focus on realistic modeling of tree bark. Difficulties lie in the complex appearance of the bark surfaces which are largely determined by their mesostructures. Unlike traditional physical based methods, in this paper, we present an appearance-based method to model tree bark ...
We derive an analytic expression for the height correlation function of a homogeneous, isotropic rough surface based on the inverse wave scattering method of Kirchhoff theory. The expression directly relates the height correlation function to diffuse scattered intensity along a linear path at fixed polar angle. We test the solution by measuring the angular distribution of light scattered from r...
Previous studies have indicated an association between the symptoms of gastroesophageal reflux disease (GERD) and aging plus height. In this study we investigated whether the arm span-height difference was related to GERD symptoms with a focus on aged subjects in the general population, since the arm span reflects the height in young adulthood before decreasing due to vertebral deformities from...
Let E be an elliptic curve over a number field K. Let h be the logarithmic (or Weil) height on E and ĥ be the canonical height on E. Bounds for the difference h − ĥ are of tremendous theoretical and practical importance. It is possible to decompose h − ĥ as a weighted sum of continuous bounded functions Ψυ : E(Kυ) → R over the set of places υ of K. A standard method for bounding h− ĥ, (due to L...
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