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A study of projections for key point based registration of panoramic terrestrial 3D laser scan / Hamidreza Houshiar in Geo-spatial Information Science, vol 18 n° 1 (March 2015)
[article]
Titre : A study of projections for key point based registration of panoramic terrestrial 3D laser scan Type de document : Article/Communication Auteurs : Hamidreza Houshiar, Auteur ; Jan Elseberg, Auteur ; Dorit Boormann, Auteur ; Andreas Nüchter, Auteur Année de publication : 2015 Article en page(s) : pp 11 - 31 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] état de l'art
[Termes IGN] projection azimutale
[Termes IGN] projection cylindrique
[Termes IGN] projection stéréographique
[Termes IGN] projection Universal Transverse MercatorRésumé : (auteur) This paper surveys state-of-the-art image features and descriptors for the task of 3D scan registration based on panoramic reflectance images. As modern terrestrial laser scanners digitize their environment in a spherical way, the sphere has to be projected to a two-dimensional image. To this end, we evaluate the equirectangular, the cylindrical, the Mercator, the rectilinear, the Pannini, the stereographic, and the z-axis projection. We show that the Mercator and the Pannini projection outperform the other projection methods. Numéro de notice : A2015-759 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/10095020.2015.1017913 En ligne : http://dx.doi.org/10.1080/10095020.2015.1017913 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78793
in Geo-spatial Information Science > vol 18 n° 1 (March 2015) . - pp 11 - 31[article]Tree species biomass and carbon stock measurement using ground based-LiDAR / Gurveek Singh Maan in Geocarto international, vol 30 n° 3 - 4 (March - April 2015)
[article]
Titre : Tree species biomass and carbon stock measurement using ground based-LiDAR Type de document : Article/Communication Auteurs : Gurveek Singh Maan, Auteur ; Chander kumar Singh, Auteur ; Mritunjay Kumar Singh, Auteur ; Balaji Nagarajan, Auteur Année de publication : 2015 Article en page(s) : pp 293 - 310 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] biomasse
[Termes IGN] données lidar
[Termes IGN] hauteur des arbres
[Termes IGN] semis de points
[Termes IGN] télémétrie laser sur satellite
[Termes IGN] traitement automatique de donnéesRésumé : (Auteur) This study scrutinises the use of terrestrial laser scanning (TLS) to measure diameter at breast height (DBH) and tree height at individual tree species level. LiDAR point cloud scans are collected from uniformly defined control points. The result of processed TLS data demonstrates the precise measurements of tree height and DBH by comparing it with field data (DBH, tree height, tree species and location). The average tree height and DBH obtained through TLS measurements were 9.44 m and 43.30 cm, respectively. A linear equation between TLS derived parameters and field measured values were established, which gave the coefficient of determination (r2) of 0.79 and 0.96 for tree height and DBH, respectively. Further, these parameters were used to calculate above ground biomass (AGB) for individual tree species by considering a non-destructive approach. The total AGB and carbon stock from 80 different trees are computed to be 49.601 and 22.320 tonnes, respectively. Numéro de notice : A2015-248 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2014.925003 Date de publication en ligne : 25/07/2014 En ligne : https://doi.org/10.1080/10106049.2014.925003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76246
in Geocarto international > vol 30 n° 3 - 4 (March - April 2015) . - pp 293 - 310[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 059-2015021 RAB Revue Centre de documentation En réserve L003 Disponible Validation of terrestrial laser scanning data using conventional forest inventory methods / Taye Mengesha in European Journal of Forest Research, vol 134 n° 2 (March 2015)
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Titre : Validation of terrestrial laser scanning data using conventional forest inventory methods Type de document : Article/Communication Auteurs : Taye Mengesha, Auteur ; Michael Hawkins, Auteur ; Maarten Nieuwenhuis, Auteur Année de publication : 2015 Article en page(s) : pp 211 - 222 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] croissance des arbres
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] hauteur des arbres
[Termes IGN] inventaire forestier (techniques et méthodes)
[Termes IGN] Irlande
[Termes IGN] Picea sitchensis
[Termes IGN] placette d'échantillonnage
[Termes IGN] semis de points
[Termes IGN] télémétrie laser terrestreRésumé : (auteur) The application of terrestrial laser scanning (TLS) in capturing forest inventory parameters such as diameter at breast height, height and diameters along stem profiles, and in monitoring forest growth, was investigated and validated by comparison with conventionally measured individual tree parameters and plot-level forest growth in a stand of Sitka spruce (Picea sitchensis (Bong.) Carr.) in Ireland. The data acquisition for all the plots with different tree sizes and different slopes was carried out using a terrestrial laser scanner (FARO LS 800 HE80) in November 2007 and November 2009, using the same plot centres and measurement procedures. The point cloud data were processed with Autostem™ software. The results showed that TLS enables the acquisition of forest stand parameters with an acceptable accuracy. Pruning of the lower branches did not improve tree recognition and the number of (partly) occluded trees stayed the same. Over the 2-year period, the average difference between the volume increment of the trees visible to the scanner derived using the conventional method and Autostem™ was 4.77 m3 ha−1 and resulted in scanner-derived estimates that were lower than the estimates obtained by conventional method by 6.1 %. Using a simple correction factor to account for occlusion in the laser scanner data, the difference between these estimates for all trees in the stand became an over-estimation by 6.96 m3 ha−1 (8.1 %). At heights up along the stems >15 m, the errors in stem diameter estimates started to escalate. Numéro de notice : A2015-186 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.1007/s10342-014-0844-0l Date de publication en ligne : 21/09/2014 En ligne : https://doi.org/10.1007/s10342-014-0844-0l Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75956
in European Journal of Forest Research > vol 134 n° 2 (March 2015) . - pp 211 - 222[article]Ground-based multi-view photogrammetry for the monitoring of landslide deformation and erosion / André Stumpf in Geomorphology, n° 231 (15 February 2015)
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Titre : Ground-based multi-view photogrammetry for the monitoring of landslide deformation and erosion Type de document : Article/Communication Auteurs : André Stumpf, Auteur ; Jean-Philippe Malet, Auteur ; P. Allemand, Auteur ; Marc Pierrot-Deseilligny , Auteur ; Grzegorz Skupinski, Auteur Année de publication : 2015 Article en page(s) : pp 130 - 145 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] Alpes (France)
[Termes IGN] bibliothèque logicielle
[Termes IGN] détection de changement
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] effondrement de terrain
[Termes IGN] érosion
[Termes IGN] MicMac
[Termes IGN] modèle numérique de terrain
[Termes IGN] reconstruction 3D
[Termes IGN] semis de points
[Termes IGN] structure-from-motion
[Termes IGN] surveillance géologiqueRésumé : (auteur) Recent advances in multi-view photogrammetry have resulted in a new class of algorithms and software tools for more automated surface reconstruction. These new techniques have a great potential to provide topographic information for geoscience applications at significantly lower costs than classical topographic and laser scanning surveys. Based on open-source libraries for multi-view stereo-photogrammetry and Structure-from-Motion, this study investigates the accuracy that can be obtained from several processing pipelines for the 3D surface reconstruction of landslides and the detection of changes over time. Two different algorithms for point-cloud comparison are tested and the accuracy of the resulting models is assessed against terrestrial and airborne LiDAR point clouds. Change detection over a period of more than two years allows a detailed assessment of the seasonal dynamics of the landslide; the possibility to estimate sediment volumes and 3D displacement are illustrated for the most active parts of the landslide. Algorithm parameters and the image acquisition protocols are found to have important impacts on the quality of the results and are discussed in detail. Numéro de notice : A2015--070 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.geomorph.2014.10.039 En ligne : http://dx.doi.org/10.1016/j.geomorph.2014.10.039 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83236
in Geomorphology > n° 231 (15 February 2015) . - pp 130 - 145[article]In-flight photogrammetric camera calibration and validation via complementary lidar / A.S. Gneeniss in ISPRS Journal of photogrammetry and remote sensing, vol 100 (February 2015)
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Titre : In-flight photogrammetric camera calibration and validation via complementary lidar Type de document : Article/Communication Auteurs : A.S. Gneeniss, Auteur ; Jon P. Mills, Auteur ; P.E. Miller, Auteur Année de publication : 2015 Article en page(s) : pp 3 - 13 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] ajustement de paramètres
[Termes IGN] analyse comparative
[Termes IGN] auto-étalonnage
[Termes IGN] caméra numérique
[Termes IGN] compensation par faisceaux
[Termes IGN] données lidar
[Termes IGN] étalonnage en vol
[Termes IGN] extraction automatique
[Termes IGN] instrumentation Applanix
[Termes IGN] méthode des moindres carrés
[Termes IGN] point d'appui
[Termes IGN] UltraCamRésumé : (auteur) This research assumes lidar as a reference dataset against which in-flight camera system calibration and validation can be performed. The methodology utilises a robust least squares surface matching algorithm to align a dense network of photogrammetric points to the lidar reference surface, allowing for the automatic extraction of so-called lidar control points (LCPs). Adjustment of the photogrammetric data is then repeated using the extracted LCPs in a self-calibrating bundle adjustment with additional parameters. This methodology was tested using two different photogrammetric datasets, a Microsoft UltraCamX large format camera and an Applanix DSS322 medium format camera. Systematic sensitivity testing explored the influence of the number and weighting of LCPs. For both camera blocks it was found that when the number of control points increase, the accuracy improves regardless of point weighting. The calibration results were compared with those obtained using ground control points, with good agreement found between the two. Numéro de notice : A2015-050 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2014.04.019 Date de publication en ligne : 16/05/2014 En ligne : https://doi.org/10.1016/j.isprsjprs.2014.04.019 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75236
in ISPRS Journal of photogrammetry and remote sensing > vol 100 (February 2015) . - pp 3 - 13[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2015021 RAB Revue Centre de documentation En réserve L003 Disponible LiDAR strip adjustment using multifeatures matched with aerial images / Yongjun Zhang in IEEE Transactions on geoscience and remote sensing, vol 53 n° 2 (February 2015)PermalinkPermalinkAnalyse temps-frequence et traitement des signaux RSO à haute résolution spatiale pour la surveillance des grands ouvrages d'art / Andrei Anghel (2015)PermalinkAutomatic construction of 3-D building model from airborne LIDAR data through 2-D snake algorithm / Jianhua Yan in IEEE Transactions on geoscience and remote sensing, vol 53 n° 1 (January 2015)PermalinkPermalinkClassification and change detection in multi - epoch airborne laser scanning point clouds / Sudan Xu (2015)PermalinkCompression strategies for LiDAR waveform cube / Grzegorz Jóźków in ISPRS Journal of photogrammetry and remote sensing, vol 99 (January 2015)PermalinkPermalinkConception d’une méthode de consolidation de grands réseaux lasergrammétriques / Emmanuel Clédat (2015)PermalinkDéveloppements récents en matière de modélisation à partir de données de Lidar aérien [diaporama] / Jean-Pierre Renaud (2015)Permalink