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Precision of points computed from intersections of lines or planes / P. Cederholm in Surveying and land information science, vol 64 n° 3 (01/09/2004)

Public [article]  inSurveying and land information science > vol 64 n° 3 (01/09/2004) . - pp 163 - 170 Titre : Precision of points computed from intersections of lines or planes Type de document : Article/Communication Auteurs : P. Cederholm, Auteur Année de publication : 2004 Article en page(s) : pp 163 - 170 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale [Termes IGN] estimation de cohérence [Termes IGN] intersection spatiale [Termes IGN] lasergrammétrie [Termes IGN] méthode des moindres carrés [Termes IGN] positionnement par GPS [Termes IGN] précision géométrique (imagerie) [Termes IGN] semis de points Résumé : (Auteur) Not all points are directly accessible when doing detail surveys with GPS. This paper suggests a method for estimating these points. The points are computed from intersections of lines that are surveyed with GPS. The lines are computed by least squares estimation. Further, the suggested method estimates the precision of the points. When using laser scanning a similar problem appears. A laser scanner captures a 3D point cloud, not the points of real interest. The suggested method can be used to compute three-dimensional coordinates of the intersection of three planes estimated from the point cloud. The method can also be used to predict the precision of the points prior to a survey. An example is given. Numéro de notice : A2004-602 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27118 [article]

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