LOCAL -N -TH ORDER SURFACE FITTING AND CURVATURE
ESTIMATION BASED ON SCATTERED-POINT CLOUD DATA
1)School of Civil Engineering, Chongqing University, Chongqing 400030
2)School of Geodesy and Geomatics, Wuhan University, Wuhan 430079
Abstract According to the poor precision of the triangular meshes geometry information extraction and the complicated local highorder surface fitting program of the scattered point cloud, the local nth order surface fast fitting method and its curvature estimation formulas are deduced, which are on basis of the parametric local point cloud data, and the curvature calculation accuracy of the local quadric, cubic and fourth surface fitting has been compared by two practical examples. The comparison results verify that the theoretical formula is not only convenient to programming implementation, but also can ensure the calculation accuracy.
Key words :
curvature
fitting
scattered point cloud
local surface
euclidean distance
Received: 06 December 2012
Published: 18 June 2013
Cite this article:
. LOCAL -N -TH ORDER SURFACE FITTING AND CURVATURE
ESTIMATION BASED ON SCATTERED-POINT CLOUD DATA[J]. jgg, 2013, 33(3): 141-143.
. LOCAL -N -TH ORDER SURFACE FITTING AND CURVATURE
ESTIMATION BASED ON SCATTERED-POINT CLOUD DATA[J]. jgg, 2013, 33(3): 141-143.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2013/V33/I3/141
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