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The influence of scanner parameters on the extraction of tree metrics from FARO Photon 120 terrestrial laser scans / Pyare Pueschel in ISPRS Journal of photogrammetry and remote sensing, vol 78 (April 2013)
[article]
Titre : The influence of scanner parameters on the extraction of tree metrics from FARO Photon 120 terrestrial laser scans Type de document : Article/Communication Auteurs : Pyare Pueschel, Auteur Année de publication : 2013 Article en page(s) : pp 58 - 68 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] arbre (flore)
[Termes IGN] extraction de la végétation
[Termes IGN] télémètre laser terrestre
[Termes IGN] troncRésumé : (Auteur) In the present study the influence of the scanner parameters, scan resolution (angular step size), scan speed (number of laser pulses per second), and pulse duration, on tree stem detection, stem diameter and volume extraction from phase-shift FARO Photon 120 TLS data was assessed. Additionally the effects of a data post processing (filtering of raw scan data) were investigated. All analyses were carried out based on single and merged scan data. It could be shown that scan speed, pulse duration and data filtering only marginally affect stem detection rates and stem diameter and volume estimation accuracies. By contrast scan resolution was found to have an effect, the magnitude of which, however, is range-dependent. For example mean stem detection rates for the three different scan resolutions tested were found to be equal in near range, but decreased more strongly for the lower scan resolutions in far range. With regard to the stem diameter extraction, scan resolution did not affect stem diameter at breast height (DBH) estimation accuracy, but limited the range within which DBH could be reliably extracted. The root mean squared error (RMSE) for DBH extracted from the single scan data was found to be significantly larger compared to the RMSE for DBH extracted from the merged scan data. Single scan data yielded stem volume estimates with lower accuracies, too. This study demonstrated that it is possible to maximize sampling efficiency by using scanner parameter sets with low scanning times (i.e., low scan resolution, high scan speed) without significantly losing estimation accuracy. If maximum accuracy is desired for both DBH and stem volume, the acquisition of multiple scans with a subsequent data merging is required. Numéro de notice : A2013-179 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2013.01.005 En ligne : https://doi.org/10.1016/j.isprsjprs.2013.01.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32317
in ISPRS Journal of photogrammetry and remote sensing > vol 78 (April 2013) . - pp 58 - 68[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2013041 RAB Revue Centre de documentation En réserve L003 Disponible Meet Dr Johannes Riegl / P. Ftizgibbon in GEO: Geoconnexion international, vol 12 n° 2 (february 2013)
[article]
Titre : Meet Dr Johannes Riegl Type de document : Article/Communication Auteurs : P. Ftizgibbon, Auteur Année de publication : 2013 Article en page(s) : pp 20 - 21 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] instrumentation Riegl
[Termes IGN] télémètre laser aéroporté
[Termes IGN] télémètre laser terrestreRésumé : (Auteur) At the Intergeo 2012 conference and trade fair in Hannover, Germany, Geoconnexion's Peter Fitzgibbon interviewed Dr Johannes Riegl, the founder and chief executive officer of Riegl laser measurements systems GMBH. Numéro de notice : A2013-085 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32223
in GEO: Geoconnexion international > vol 12 n° 2 (february 2013) . - pp 20 - 21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 062-2013021 SL Revue Centre de documentation Revues en salle Disponible A 3-d laser scanning system and scan data processing method for the monitoring of tunnel deformations / K. Chmelina in Journal of applied geodesy, vol 6 n° 3-4 (November 2012)
[article]
Titre : A 3-d laser scanning system and scan data processing method for the monitoring of tunnel deformations Type de document : Article/Communication Auteurs : K. Chmelina, Auteur ; J. Jansa, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 177 - 185 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] auscultation d'ouvrage
[Termes IGN] Autriche
[Termes IGN] caméra numérique
[Termes IGN] données localisées 3D
[Termes IGN] lever mobile
[Termes IGN] Lidar
[Termes IGN] réalité virtuelle
[Termes IGN] surveillance d'ouvrage
[Termes IGN] système de numérisation mobile
[Termes IGN] tachéomètre électronique
[Termes IGN] télémètre laser terrestre
[Termes IGN] tunnel
[Termes IGN] visualisation 3DRésumé : (Auteur) The paper presents the mobile multi-sensor system Orthos Plus for the monitoring and mapping of tunnel walls, a scan data processing method for the evaluation of 3-d tunnel wall displacements from subsequent wall scans and, finally, a virtual reality tool supporting the interpretation of data. The measuring system consists of a 3-d laser scanner, a motorised total station and a digital camera that are integrated on a light metal frame that is installed on a mobile platform. It has been designed to perform tunnel measurements most efficiently and to meet the special requirements of tunnels under construction. The evaluation of 3-d displacements is based on a 3-d matching algorithm that takes advantage of the particular conditions of tunnel (shotcrete) surfaces. The virtual reality tool allows viewing of data in a 3-d virtual reality tunnel model and their animation in time and space in order supports understanding in an optimal way. The measuring system Orthos Plus has been developed in the course of a national research project, the 3-d matching method in the frame of the Austrian Christian Doppler Laboratory Spatial Data from Laser Scanning and Remote Sensing and the VR tool in the Austrian COMET K1 Competence Center VRVis Center (www.vrvis.at). Numéro de notice : A2012-597 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1515/jag-2012-0013 En ligne : http://www.degruyter.com/view/j/jag.2012.6.issue-3-4/jag-2012-0013/jag-2012-0013 [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32043
in Journal of applied geodesy > vol 6 n° 3-4 (November 2012) . - pp 177 - 185[article]Airborne lidar for natural environments: research and applications in France / C. Puech in Revue Française de Photogrammétrie et de Télédétection, n° 200 (Novembre 2012)
[article]
Titre : Airborne lidar for natural environments: research and applications in France Type de document : Article/Communication Auteurs : C. Puech, Auteur ; Sylvie Durrieu, Auteur ; Jean-Stéphane Bailly, Auteur Année de publication : 2012 Article en page(s) : pp 54 - 68 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] géomorphologie
[Termes IGN] Lidar
[Termes IGN] lidar à retour d'onde complète
[Termes IGN] modèle numérique de surface
[Termes IGN] télémètre laser aéroporté
[Termes IGN] traitement du signal
[Termes IGN] végétationRésumé : (Auteur) This paper is a review of various research works in France on airborne LiDAR applied to the monitoring of natural environment. Firstly, it presents applications based on the use of very high-resolution digital surface models derived from LiDAR data. The use of such models is quickly expanding on all the fields related to the environment. This article also discusses more specific research on signal processing and accuracy. Part of this work summarizes papers that were published in the "Revue Française de Photogrammétrie et de Télédétection (RFPT)", the French Journal of Photogrammetry and Remote Sensing, following two national conferences organized in Montpellier (2006) and Le Mans (2009) in order to invite researchers using LiDAR in several fields of application to initiate technical and scientific exchanges. We also provide an update on ongoing research and instrument developments in France. Numéro de notice : A2012-568 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.52638/rfpt.2012.62 Date de publication en ligne : 19/04/2014 En ligne : https://doi.org/10.52638/rfpt.2012.62 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32014
in Revue Française de Photogrammétrie et de Télédétection > n° 200 (Novembre 2012) . - pp 54 - 68[article]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)
[article]
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 terrestreRésumé : (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
in IEEE Transactions on geoscience and remote sensing > vol 50 n° 11 Tome 2 (November 2012) . - pp 4804 - 4808[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2012111B RAB Revue Centre de documentation En réserve L003 Disponible The electronically steerable flash Lidar : A full waveform scanning system for topographic and ecosystem structure applications / H. Duong in IEEE Transactions on geoscience and remote sensing, vol 50 n° 11 Tome 2 (November 2012)PermalinkLidar strip adjustment with automatically reconstructed roof shapes / M. Rentsch in Photogrammetric record, vol 27 n° 139 (September - November 2012)PermalinkPermalinkPermalinkMulti-wavelength canopy LiDAR for remote sensing of vegetation: Design and system performance / G. Wei in ISPRS Journal of photogrammetry and remote sensing, vol 69 (April 2012)PermalinkMéthodologie de mesure de la vapeur d'eau atmosphérique : Objectifs et premiers résultats de la campagne DEMEVAP 2011 à l'Observatoire de Haute Provence [diaporama] / Emmanuel Bardiere (08/03/2012)PermalinkDigital measurements with 3D laser scanner: German scanning project / J. Rechenbach in Geoinformatics, vol 15 n° 2 (01/03/2012)PermalinkCalibration of wet tropospheric delays in GPS observation using Raman lidar measurements / Pierre Bosser (2012)PermalinkPermalinkPermalink