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Estimating the uncertainty of terrestrial laser scanner measurements / M. Polo in IEEE Transactions on geoscience and remote sensing, vol 50 n° 11 Tome 2 (November 2012)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 50 n° 11 Tome 2 (November 2012) . - pp 4804 - 4808 Titre : Estimating the uncertainty of terrestrial laser scanner measurements Type de document : Article/Communication Auteurs : M. Polo, Auteur ; Ángel M. Felicísimo, Auteur ; A. Villanueva, Auteur ; J. Martinez-Del-Pozo, Auteur Année de publication : 2012 Article en page(s) : pp 4804 - 4808 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] données lidar [Termes IGN] données localisées 3D [Termes IGN] estimation statistique [Termes IGN] incertitude de mesurage [Termes IGN] lidar topographique [Termes IGN] précision des données [Termes IGN] R (langage) [Termes IGN] télémètre laser terrestre Résumé : (Auteur) At present, several papers discuss the accuracy and precision of terrestrial laser scanners (TLSs), but the research continues to focus on the behavior of the TLSs. The purpose of this paper is to propose a method to evaluate the uncertainty of a TLS (FARO Photon 80). A rigid and transportable aluminum structure with 28 black-and-white targets was designed for this purpose. The structure was scanned 12 times at several distances from 2 to 70 m, and the x, y, and z coordinates of the center of the targets were automatically identified. Data were analyzed by means of circular and spherical statistics using R modules programmed in our research group. Analysis reveals that 3-D spatial distribution has a stratified pattern in the Z-axis. Regardless of the scanner status, these results indicate that these analyses should be performed periodically because they can have an impact on some studies. The proposed methodology is robust and simple and can be performed with free software such as the R modules used in this work. Numéro de notice : A2012-592 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2012.2192481 Date de publication en ligne : 08/05/2012 En ligne : https://doi.org/10.1109/TGRS.2012.2192481 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32038 [article]

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Positional accuracy analysis of satellite imagery by circular statistics / A. Cuartero in Photogrammetric Engineering & Remote Sensing, PERS, vol 76 n° 11 (November 2010)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 76 n° 11 (November 2010) . - pp 1275 - 1286 Titre : Positional accuracy analysis of satellite imagery by circular statistics Type de document : Article/Communication Auteurs : A. Cuartero, Auteur ; Ángel M. Felicísimo, Auteur ; M. Polo, Auteur ; A. Caro, Auteur ; P. Rodriguez, Auteur Année de publication : 2010 Article en page(s) : pp 1275 - 1286 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] correction géométrique [Termes IGN] erreur de positionnement [Termes IGN] Estrémadure (Espagne) [Termes IGN] GPS en mode différentiel [Termes IGN] image Terra-ASTER [Termes IGN] positionnement différentiel [Termes IGN] satellite artificiel Résumé : (Auteur) The proposed method in this paper uses circular statistics for the analysis of errors in the positional accuracy of geometric corrections satellite images using Independent Check Lines (ICL) instead of Independent Check Points (ICP). Circular statistics has been preferred because of the vectorial nature of the spatial error. A study case has been presented and discussed in detail. From the terra-aster images of Extremadura area (Spain), the Ground Control Point (GCP), ICP, and ICL data were acquired using differential GPS through field survey, and the planimetric positional accuracy was analyzed by both the conventional method (using ICP) and the proposed method (using ICL). Comparing conventional and proposed methods, the results indicated that modulus statistics are similar (e.g., RMSE of Geometric Correction 1 were 17.5 for the conventional method and 17.2 m for proposed method). But as additional results, azimuthal component statistics was calculated (e.g., mean direction: 247.2° in Geometric Correction 1), and several tests were made which showed the error distribution are not uniform and normal. Numéro de notice : A2010-473 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.76.11.1275 En ligne : https://doi.org/10.14358/PERS.76.11.1275 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30666 [article]

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105-2010112	RAB	Revue	Centre de documentation	En réserve L003	Disponible
105-2010111	RAB	Revue	Centre de documentation	En réserve L003	Disponible