A comparative analysis of bilinear based scalar algorithms

Daniel, M.S. Kingston; Moses, C. John

doi:10.1109/iccpct.2014.7054821

Cited by 2 publications

(1 citation statement)

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“…To improve the accuracy of the curvature calculation, the bilinear interpolation method [16] is used to achieve α g1 and α g2 which are the geostrophic wind angles of two points before and after the current grid points, respectively, with a distance ∆L in the direction of the geostrophic wind (∆L is far less than the distance between the two grid points). Additionally, the curvature value C of the grid is calculated using central difference method as follows:…”

Section: Curvature Calculationmentioning

confidence: 99%

Automatic Analysis of Trough Lines Based on Curvature Tracing

Huang

Yin

et al. 2018

Atmosphere

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To solve the problems that arise in traditional automatic methods for trough line analysis with regard to low processing efficiency and analytical accuracy, an automatic method for trough line analysis was proposed in this study, comprising the following steps. Firstly, the curvature of contour lines was calculated using geopotential height field data to extract tracing start points, and candidate and non-candidate trough points were classified and recognized based on their curvature and relative positions. Afterwards, among the candidates, the eligible trough points were connected from tracing start point. Finally, the automatically analyzed trough lines were obtained after some post-processing steps. The experimental results indicate that the method is able to effectively identify meteorological trough lines, and that its performance is superior to some previous analysis methods of trough line in terms of analytical accuracy and processing speed.

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Section: Curvature Calculationmentioning

confidence: 99%