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Les structures archéologiques et les peuplements de la forêt domaniale de Haye analysés par laser aéroporté / Jérôme Bock in Rendez-vous techniques, n° 20 (mai 2008)
[article]
Titre : Les structures archéologiques et les peuplements de la forêt domaniale de Haye analysés par laser aéroporté Type de document : Article/Communication Auteurs : Jérôme Bock, Auteur ; Jean-Luc Dupouey, Auteur ; Etienne Dambrine, Auteur ; Murielle Georges-Leroy, Auteur Année de publication : 2008 Article en page(s) : p. 15-18 Note générale : Bibliogr. Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] archéométrie
[Termes IGN] dendrométrie
[Termes IGN] forêt domaniale
[Termes IGN] Haye, forêt de (Meurthe-et-Moselle)
[Termes IGN] peuplement forestier
[Termes IGN] télémétrie laser aéroportéRésumé : En mars 2007, un avion a survolé la forêt de Haye pour en percer, avec une technique révolutionnaire de télédétection laser (LIDAR), les secrets archéologiques et forestiers. L'opération, la plus importante du genre en forêt française, devait aboutir à la réalisation de "la carte du plus grand cadastre gallo-romain connu en Europe" et à des évaluations en matière dendrométrique et de biodiversité. En voici les premiers enseignements, très prometteurs. Numéro de notice : A2008-621 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET/IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=70687
in Rendez-vous techniques > n° 20 (mai 2008) . - p. 15-18[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité IFN-DIR-P000120 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt Coastal surveying techniques / C. Pennington in Geoinformatics, vol 11 n° 6 (01/09/2008)
[article]
Titre : Coastal surveying techniques Type de document : Article/Communication Auteurs : C. Pennington, Auteur ; P. Hobbs, Auteur Année de publication : 2008 Article en page(s) : pp 16 - 19 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] érosion côtière
[Termes IGN] modélisation 3D
[Termes IGN] précision des données
[Termes IGN] Royaume-Uni
[Termes IGN] surveillance du littoral
[Termes IGN] télémétrie laser terrestreRésumé : (Auteur) This article describes work by the British Geological Survey (BGS) who are using terrestrial laser systems and other surveying techniques to improve our understanding of coastal erosion in different geological environments. These include chalk cliffs in Kent and Sussex, steep Jurassic cliffs in Yorkshire and Dorset and 'soft' cliffs in Kent, Norfolk and Yorshire. Copyright GEOinformatics Numéro de notice : A2008-341 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29334
in Geoinformatics > vol 11 n° 6 (01/09/2008) . - pp 16 - 19[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 262-08061 SL Revue Centre de documentation Revues en salle Disponible A combined single range and single image device for low-cost measurement of building façade features / C. Ordonez in Photogrammetric record, vol 23 n° 122 (June - August 2008)
[article]
Titre : A combined single range and single image device for low-cost measurement of building façade features Type de document : Article/Communication Auteurs : C. Ordonez, Auteur ; Pedro Arias, Auteur ; J. Herraez, Auteur ; et al., Auteur Année de publication : 2008 Article en page(s) : pp 228 - 240 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] bâtiment
[Termes IGN] image isolée
[Termes IGN] photogrammétrie terrestre
[Termes IGN] télémétrie laser terrestreRésumé : (Auteur) The dimensions of building façades and window apertures are usually determined by making direct measurements using tapes and plummets. This approach, however, has a number of drawbacks including the physical risk to which the persons making the measurements are exposed. This paper proposes an indirect approach based on close range photogrammetry that is inexpensive, simple, fast and safe, and which does not require specialist staff or direct ground control measurements. The method is based on taking a picture using a digital camera and measuring the distance to the object using a handheld laser distance meter. Both items of equipment are mounted on a specially designed support that allows the laser distance meter to move independently of the camera. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-298 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00478.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00478.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29291
in Photogrammetric record > vol 23 n° 122 (June - August 2008) . - pp 228 - 240[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-08021 RAB Revue Centre de documentation En réserve L003 Disponible 3D vegetation mapping using small-footprint full-waveform airborne laser scanners / W. Wagner in International Journal of Remote Sensing IJRS, vol 29 n° 5 (March 2008)
[article]
Titre : 3D vegetation mapping using small-footprint full-waveform airborne laser scanners Type de document : Article/Communication Auteurs : W. Wagner, Auteur ; Markus Hollaus, Auteur ; et al., Auteur Année de publication : 2008 Article en page(s) : pp 1433 - 1452 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] carte de la végétation
[Termes IGN] données localisées 3D
[Termes IGN] lidar à retour d'onde complète
[Termes IGN] modèle numérique de terrain
[Termes IGN] rayonnement infrarouge
[Termes IGN] semis de points
[Termes IGN] signal laser
[Termes IGN] télémétrie laser aéroportéRésumé : (Auteur) Small-footprint full-waveform airborne laser scanning (ALS) is a remote sensing technique capable of mapping vegetation in three dimensions with a spatial sampling of about 0.5-2 m in all directions. This is achieved by scanning the laser beam across the Earth's surface and by emitting nanosecond-long infrared pulses with a high frequency of typically 50-150 kHz. The echo signals are digitized during data acquisition for subsequent off-line waveform analysis. In addition to delivering the three-dimensional (3D) coordinates of scattering objects such as leaves or branches, full-waveform laser scanners can be calibrated for measuring the scattering properties of vegetation and terrain surfaces in a quantitative way. As a result, a number of physical observables are obtained, such as the width of the echo pulse and the backscatter cross-section, which is a measure of the electromagnetic energy intercepted and re-radiated by objects. The main aim of this study was to build up an understanding of the scattering characteristics of vegetation and the underlying terrain. It was found that vegetation typically causes a broadening of the backscattered pulse, while the backscatter cross-section is usually smaller for canopy echoes than for terrain echoes. These scattering properties allowed classification of the 3D point cloud into vegetation and non-vegetation echoes with an overall accuracy of 89.9% for a dense natural forest and 93.7% for a baroque garden area. In addition, by removing the vegetation echoes before the filtering process, the quality of the digital terrain model could be improved. Copyright Taylor & Francis Numéro de notice : A2008-082 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160701736398 En ligne : https://doi.org/10.1080/01431160701736398 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29077
in International Journal of Remote Sensing IJRS > vol 29 n° 5 (March 2008) . - pp 1433 - 1452[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-08031 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Assessment of the influence of flying altitude and scan angle on biophysical vegetation products derived from airborne laser scanning / F. Morsdorf in International Journal of Remote Sensing IJRS, vol 29 n° 5 (March 2008)
[article]
Titre : Assessment of the influence of flying altitude and scan angle on biophysical vegetation products derived from airborne laser scanning Type de document : Article/Communication Auteurs : F. Morsdorf, Auteur ; O. Frey, Auteur ; E. Meier, Auteur ; et al., Auteur Année de publication : 2008 Article en page(s) : pp 1387 - 1406 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] altitude du capteur
[Termes IGN] angle d'incidence
[Termes IGN] angle de visée
[Termes IGN] couvert végétal
[Termes IGN] données laser
[Termes IGN] hauteur des arbres
[Termes IGN] instrumentation Toposys
[Termes IGN] Leaf Area Index
[Termes IGN] modèle numérique de terrain
[Termes IGN] parc naturel
[Termes IGN] plan de vol
[Termes IGN] signal laser
[Termes IGN] Suisse
[Termes IGN] télémétrie laser aéroportéRésumé : (Auteur) Airborne Laser Scanning (ALS) has been established as a valuable tool for the estimation of biophysical vegetation properties such as tree height, crown width, fractional cover and leaf area index (LAI). It is expected that the conditions of data acquisition, such as viewing geometry and sensor configuration influence the value of these parameters. In order to gain knowledge about these different conditions, we test for the sensitivity of vegetation products for viewing geometry, namely flying altitude and scanning (incidence) angle. Based on two methodologies for single tree extraction and derivation of fractional cover and LAI previously developed and published by our group, we evaluate how these variables change with either flying altitude or scanning angle. These are the two parameters which often need to be optimized towards the best compromise between point density and area covered with a single flight line, in order to reduce acquisition costs. Our test-site in the Swiss National Park was sampled with two nominal flying altitudes, 500 and 900 m above ground. Incidence angle and local incidence angle were computed based on the digital terrain model using a simple backward geocoding procedure. We divided the raw laser returns into several different incident angle classes based on the flight path data; the TopoSys Falcon II system used in this study has a maximum scan angle of + 7.15°. We compared the derived biophysical properties from each of these classes with field measurements based on tachymeter measurements and hemispherical photographs, which were geolocated using differential GPS. It was found that with increasing flying height the well-known underestimation of tree height increases. A similar behaviour can be observed for fractional cover; its respective values decrease with higher flying height. The minimum distance between first and last echo increases from 1.2 metres for 500 m AGL to more than 3 metres for 900 m AGL, which does alter return statistics. The behaviour for incidence angles is not so evident, probably due to the small scanning angle of the system used. fCover seems to be most affected by incidence angles, with significantly higher differences for locations further away from nadir. As expected, incidence angle appears to be of higher importance for vegetation density parameters than local incidence angle. Numéro de notice : A2008-081 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160701736349 En ligne : https://doi.org/10.1080/01431160701736349 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29076
in International Journal of Remote Sensing IJRS > vol 29 n° 5 (March 2008) . - pp 1387 - 1406[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-08031 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Automatic forest inventory parameter determination from terrestrial laser scanner data / Hans-Gerd Maas in International Journal of Remote Sensing IJRS, vol 29 n° 5 (March 2008)PermalinkForum de photogrammétrie / Anonyme in Géomatique expert, n° 61 (01/03/2008)PermalinkPermalinkCAMPINO, a skeletonization method for point cloud processing / Alexander Bucksch in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 1 (January - February 2008)PermalinkContinous mobile laser scanning / F. Zampa in GIM international, vol 22 n° 1 (January 2008)PermalinkEléments de physique pour l'imagerie aérienne et spatiale et la géodésie [diaporama pour le master PPMD] / Michel Kasser (2008)PermalinkEntwicklung eines Qualitätsmodells für die Generierung von digitalen Gelandemodellen aus airborne Laser scanning / Hans Jürg Luthy (2008)PermalinkInvestigations of high precision terrestrial laser scanning with emphasis on the development of a robust close-range 3D-laser scanning system / Hans Martin Zogg (2008)PermalinkA method for automated registration of unorganised point clouds / K. Bae in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 1 (January - February 2008)Permalinkvol 63 n° 1 - January - February 2008 - Terrestrial laser scanning (Bulletin de ISPRS Journal of photogrammetry and remote sensing) / Derek D. LichtiPermalinkTheory and practice on terrestrial laser scanning / Jose Luis Lerma Garcia (2008)PermalinkImportant considerations for cranofacial mapping using laser scanners / Z. Majid in Photogrammetric record, vol 22 n° 120 (December 2007 - February 2008)PermalinkOrthophoto generation from unorganized point clouds / L. Tournas in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 11 (November 2007)PermalinkLaser scanning and archaeology: standard tools for 3D documentation of excavations / W. Neubauer in GIM international, vol 21 n° 10 (October 2007)PermalinkPhotogrammetry and GIS in Turkey: improving heritage documentation / A. Cabuk in GIM international, vol 21 n° 9 (September 2007)PermalinkLa surveillance dans le temps des altérations / Michel Kasser in Géomètre, n° 2040 (septembre 2007)PermalinkTour d'horizon des travaux les plus courants / Michel Kasser in Géomètre, n° 2040 (septembre 2007)PermalinkCamera laser scanner / Luigi Colombo in GIM international, vol 21 n° 8 (August 2007)PermalinkRoad safety analysis / Vassilis Pagounis in GIM international, vol 21 n° 8 (August 2007)PermalinkTerrestrial laser scanner to detect landslide displacement fields: a new approach / Giordano Teza in International Journal of Remote Sensing IJRS, vol 28 n°15-16 (August 2007)Permalink