GRADIENT ESTIMATION FROM IRREGULARLY SPACED DATA SETS

dc.contributor.author	Meyer T.H.
dc.contributor.author	Eriksson M.
dc.contributor.author	Maggio R.C.
dc.date.accessioned	2021-03-14T04:33:25Z
dc.date.available	2021-03-14T04:33:25Z
dc.date.issued	2001
dc.identifier	https://www.elibrary.ru/item.asp?id=796399
dc.identifier.citation	Mathematical Geology, 2001, 33, 6, 693-717
dc.identifier.issn	0882-8121
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/26690
dc.description.abstract	Topographic data sets are often composed of terrain samples arranged in irregular meshes. Many gradient estimation methods require the data to be arranged in a regular mesh; irregular meshes present a difficulty for them. This paper presents a novel method of estimating surface gradients from irregularly spaced inputs. The method is derived using directional derivatives and is shown to be a generalization of traditional finite difference methods. Analytical tests were used to evaluate the method, which was shown to be accurate and robust.
dc.subject	DIRECTIONAL DERIVATIVE
dc.subject	FINITE DIFFERENCE
dc.subject	SLOPE
dc.subject	SURFACE NORMAL VECTOR
dc.subject	GEOMORPHOMETRIC
dc.title	GRADIENT ESTIMATION FROM IRREGULARLY SPACED DATA SETS
dc.type	Статья

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