Descripteur
Termes IGN > sciences naturelles > sciences de la Terre et de l'univers > géosciences > géographie physique > géomorphologie > relief > montagne
montagne
Commentaire :
Haute montagne, Colline, Massif montagneux, Mont, Orographie, Pic (montagnes), Région montagneuse, Sierra, Sommet (montagnes). Espace naturel, Haute terre. >> Montagnard, Tectonique. >>Terme(s) spécifique(s) : Alpinisme, Climat de montagne, Col de montagne, Guerre en montagne, Inselberg, Orogenèse, Oronymie, Pédiment (géologie), Route de montagne, Torrent, Vie en montagne. Source(s) : Les mots de la géographie / Roger Brunet, 1993. Equiv. LCSH : Alpines regions Mountains. Domaine(s) : 550, 910. Voir aussi |
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Pathway detection and geometrical description from ALS data in forested mountaneous area / Nicolas David (2009)
contenu dans ISPRS Workshop Laserscanning'09, Paris, France, September 1-2, 2009 / Frédéric Bretar (2009)
Titre : Pathway detection and geometrical description from ALS data in forested mountaneous area Type de document : Article/Communication Auteurs : Nicolas David , Auteur ; Thomas Pons, Auteur ; Adrien Chauve , Auteur ; Frédéric Bretar, Auteur ; Clément Mallet , Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2009 Collection : International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, ISSN 1682-1750 num. 38-3/W8 Conférence : ISPRS 2009, Workshop LaserScanning 01/09/2009 02/09/2009 Paris France OA Archives proceedings Importance : pp 242 - 247 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] extraction automatique
[Termes IGN] forêt
[Termes IGN] montagne
[Termes IGN] orthoimage
[Termes IGN] semis de points
[Termes IGN] télémétrie laser aéroportéRésumé : (Auteur) In the last decade, airborne laser scanning (ALS) systems have become an alternative source for the acquisition of altimeter data. Compared to high resolution orthoimages, one of the main advantages of ALS is the ability of the laser beam to penetrate vegetation and reach the ground underneath. Therefore, 3D point clouds are essential data for computing Digital Terrain Models (DTM) in natural and vegetated areas. DTMs are a key product for many applications such as tree detection, flood modelling, archeology or road detection. Indeed, in forested areas, traditional image-based algorithms for road and pathway detection would partially fail due to their occlusion by the canopy cover. Thus, crucial information for forest management and fire prevention such as road width and slope would be misevaluated.
This paper deals with road and pathway detection in a complex forested mountaneous area and with their geometrical parameter extraction using lidar data. Firstly, a three-step image-based methodology is proposed to detect road regions. Lidar feature orthoimages are first generated. Then, road seeds are both automatically and semi-automatically detected. And, a region growing algorithm is carried out to retrieve the full pathways from the seeds previously detected. Secondly, these pathways are vectorized using morphological tools, smoothed, and discretized. Finally, ID sections within the lidar point cloud are successively generated for each point of the pathways to estimate more accurately road widths in 3D. We also retrieve a precise location of the pathway borders and centers, exported as vector data.Numéro de notice : C2009-006 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : FORET/IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVIII/3-W8/papers/242_laserscanning09.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65046
Titre : UAV photogrammetry Type de document : Thèse/HDR Auteurs : Henri Eisenbeiss, Auteur Editeur : Zurich : Institut für Geodäsie und Photogrammetrie IGP - ETH Année de publication : 2009 Collection : IGP Mitteilungen, ISSN 0252-9335 num. 105 Importance : 203 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-906467-86-3 Note générale : Bibliographie
A dissertation submitted to ETH ZURICH for the degree of Doctor of SciencesLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] acquisition d'images
[Termes IGN] données lidar
[Termes IGN] drone
[Termes IGN] lasergrammétrie
[Termes IGN] modèle numérique de surface
[Termes IGN] montagne
[Termes IGN] orthophotographie
[Termes IGN] Pérou
[Termes IGN] photogrammétrie aérienne
[Termes IGN] photogrammétrie numérique
[Termes IGN] site archéologique
[Termes IGN] Suisse
[Termes IGN] télémétrie laser aéroportéIndex. décimale : 33.30 Photogrammétrie numérique Résumé : (Auteur) UAVs are unmanned aerial vehicles. Hence, UAV photogrammetry can be understood as a new photogrammetric measurement tool. UAV photogrammetry opens various new applications in the close range domain, combining aerial and terrestrial photogrammetry, but also introduces low-cost alternatives to the classical manned aerial photogrammtery. This thesis deals with the challenging task: "The use of UAV systems as photogrammetric data acquisition platforms " and the work was conducted by the author at IGP at ETH Zurich from 2003 to 2009.
In this work, a new terminology, UAV Photogrammetry, was introduced. UAV Photogrammetry describes photogrammetric measurement platforms, which operate as either remotely controlled, semi-autonomously, or autonomously, all without a pilot sitting in the platform, and the photogrammetric processing of UAV images. The broad definition covers balloons, kites, gliders, airships, rotary and fixed wing UAVs with the capability for photogrammetric data acquisition in manual, semi-automated and automated flight mode. To more clearly define UAVs, a comprehensive literature review on UAVs used in photogrammetry will be given. Using the existing categorizations of UAVs, the outcome of the literature review and our experiments, a new classification for UAVs, with respect on low-cost and high-end systems, the real-time processing capability (based on the integrated sensors and the flight performance, as well as the influence of environmental conditions), was provided. For this work, UAV systems, based on the new classification, will be selected to demonstrate how UAVs can be applied for photogrammetric data acquisition and processing.
In addition to the revised definitions and classifications of UAVs, we have devised a new generic workflow for the photogrammetric UAV flight planning, image acquisition, quality control and data processing. This workflow can specifically be adapted to individual UAV-systems and applications. Thus, specific tools, such as flight planning, are developed. Based on our results, UAV flight control systems and the flight operations were improved and commercial and in-house developed software packages were additionally evaluated for the processing of UAV image data. The proposed workflow allows the combination of office and field work, enabling the first results to be available during the field work for preliminary analysis.
This dissertation also emphasizes the influence of the manual, assisted and autonomous control of the UAV system on the flight performance during the data acquisition, which in turn influences the results and the feasibility of the photogrammetric data processing. Therefore, an autonomous tachymeter tracking of the flight trajectory was performed firstly with an UAV system. A test field for UAVs was then established at the campus Honggerberg at ETH Zurich. This test field enables us to assess the flight performance of various UAV systems. Specifically, an UAV system combined with a light weight laser scanner acquired a DSM over our test field.
Complementary to the developed workflow the accomplished real world application, this work has shown the great potential of using UAVs in photogrammetry and upcoming applications. The focus of our applications was particularly on archaeology and environmental applications, which allowed us to prove our established workflow and to underline the high potential of UAV systems for specific photogrammetric tasks, specifically the use of autonomous operated and stabilized UAV systems. :
• In the frame of the Nasca/Palpa project, the pre-Inca settlement Pinchango Alto (Peru) was documented with our autonomous flying model helicopter. For the first time an accurate and dense elevation model (10cm resolution) of an archaeological site was generated automatically using our in-house developed software. A detailed analysis of the generated data was done using terrestrial laser scanning data. The comparison of both data sets showed that the mean difference between the elevation models was less than 1cm with a standard deviation of 6cm.
• The world heritage Maya site Copan (Honduras) was documented with our system in 2009. The preliminary results, achieved directly after the data acquisition, underlined the expectations and potentials for up-coming
archaeological analysis and investigations.
• The castle Landenberg was documented with 1cm resolution using terrestrial and UAV images.
• In the framework of this dissertation, the rockslide Randa (Switzerland) was documented with LiDAR and image data taken from a manned helicopter. The results from the manned system were compared to the observed data from a UAV for a small part of the rockslide. The elevation model generated from the UAV image data had a substantial higher resolution and showed less occlusions than the LiDAR data. These differences result from the possibility to acquire image data close to the rockslide using an autonomous operated UAV, without endangering human life, and using a specific flight planning tool for UAVs in mountainous areas. This particular application showed also the limitations of existing UAVs in the data acquisition in Alpine areas, due to the high altitudes. However recent developments of new UAV systems are now ready in future work to operate in Alpine areas.
• Using a quadrotor, equipped with a light weight compact camera, it was possible to generate elevation models of a gravel pit at different time periods (February and April). The image data was acquired in the semi-automated and automated mode, allowing an estimation of the volume dug from the pit over time.
• An UAV was used in a study for the evaluation of genetically modified maize (simulated) on conventional maize. High resolution elevation models and orthoimages were produced from two campaigns. The generated spatial data was integrated into a GIS and then used with measures for the out-crossing in maize, to analyse the inclination, height, distance and wind on the influence of cross-pollination in maize.
Finally, based on the experimental results, a new particular workflow for combination of image and LiDAR sensors on one UAV platform was provided.Note de contenu : 1 Introduction
1.1 Definition of UAVs
1.1.1 UAV photogrammetry
1.1.2 Advantages of UAVs
1.1.3 Limitations in the use of UAVs
1.1.4 Categorization of photogrammetric platforms
1.2 Research goals
1.2.1 Rationale
1.3 Outline
2 Literature review
2.1 Pre 2004
2.1.1 Early investigations
2.1.2 Balloons
2.1.3 Airship
2.1.4 Model helicopters
2.1.5 A7fev
2.1.6 Fixed wing aircraft
2.2 Developments from 2004 to 2007
2.3 2008 until present
2.3.1 VAV-borne LiDAR
2.3.2 Rotary wing UAVs
2.3.3 Balloons
2.3.4 Open source systems
2.3.5 Further applications and developments
2.3.6 IGP ETH Zurich
2.4 Conclusions
3 UAV-systems
3.1 General overview
3.1.1 Classification of UAVs
3.1.2 Regulations
3.1.3 UAV communities
3.2 Open Source and Low Cost UAV Systems: OM-Class
3.2.1 Mikrokopter
3.2.2 Manual controlled system ,,Susi"
3.3 Micro & Mini UAV Systems: M-Class
3.3.7 Quadrotors
3.3.2 Model helicopter
3.3.3 Fixed wing UA Vs
3.4 Large Payload UAV Systems: L-Class
3.4.1 Aeroscout
3.4.2 Geocopter
3.5 Conclusions
4 Project workflow and image data acquisition
4.1 Workflow
4.2 Flight Planning
4.2.1 Flight planning for UAVs
4.2.2 Integration into the mission planning software
4.3 Manual versus autonomous flight
4.3.1 Example model helicopter
4.3.2 Manually controlled Kites and Zeppelin
4.4 Analysis of the trajectory of autonomous UAV flights
4.4.1 Flight trajectory versus predefined flight path
4.4.2 Influence of the flight modus
4.4.3 Tracking tachymetry
4.5 Main achievements for the autonomous flights
5 Photogrammetric data processing
5.1 Image orientation
5.2 Photogrammetric products
5.2.1 Generation of digital surface models
5.2.2 Orthoimage and 3D Visualization
5.3 UAV-borne laser scanning
5.3.7 Test field Campus Honggerberg
5.3.2 First test flights 2009
5.4 Conclusions
6 Archaeological applications and cultural heritage documentation
6.1 Motivation
6.2 Pinchango Alto (Peru) a pre-Inca settlement
6.3 The Maya site Copan (Honduras)
6.4 Castle Landenberg (Switzerland)
6.5 Conclusions
7 Monitoring of hazards, environmental and agricultural applications
7.1 The rockslide Randa (Switzerland)
7.2 Estimation of the volumetric changes of gravel-pits
7.3 Agriculture: The maize field project
7.4 Main achievements
8 Conclusions and perspectives
8.1 Conclusions
8.2 PerspectivesNuméro de notice : 15508 Affiliation des auteurs : non IGN Autre URL associée : http://dx.doi.org/10.3929/ethz-a-005939264 Thématique : IMAGERIE Nature : Thèse étrangère DOI : 10.3929/ethz-a-005939264 En ligne : https://ethz.ch/content/dam/ethz/special-interest/baug/igp/igp-dam/documents/PhD [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62741 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15508-01 33.30 Livre Centre de documentation Photogrammétrie - Lasergrammétrie Disponible Extraction of land cover themes from aerial ortho-images in mountainous areas using external information / Arnaud Le Bris in Photogrammetric record, vol 23 n° 124 (December 2008 - February 2009)
[article]
Titre : Extraction of land cover themes from aerial ortho-images in mountainous areas using external information Type de document : Article/Communication Auteurs : Arnaud Le Bris , Auteur ; Didier Boldo , Auteur Année de publication : 2008 Conférence : ISPRS 2007, High-Resolution Earth Imaging for Geospatial Information workshop 29/05/2007 01/06/2007 Hanovre Allemagne OA Archives proceedings Article en page(s) : pp 387 - 404 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] extraction automatique
[Termes IGN] image aérienne
[Termes IGN] montagne
[Termes IGN] occupation du sol
[Termes IGN] ombre
[Termes IGN] orthoimage
[Termes IGN] valeur radiométriqueRésumé : (Auteur) In mountainous areas, land cover extraction from ortho-images through semi-automatic classification techniques is limited by several factors including large shadow areas, radiometric similarities between distinct themes and inhomogeneous radiometry among regions of the same class. The information in the image is thus not sufficient to separate the different classes. Nevertheless, good results can be obtained by dividing each land cover class into two subclasses, "shadow" and "non-shadow", and introducing external information into the classification process. This information can be derived from an older or more generalised database, geographical knowledge concerning the links between relief and land cover, or prior information concerning shadows. This external knowledge is then interpreted in terms of prior probabilities and merged with radiometric information from the image in a "maximum a posteriori (MAP) per region" classification process. Moreover, the results can also be improved by the use of combinations of derived channels calculated from the initial spectral bands of the image. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-419 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00502.x Date de publication en ligne : 24/11/2008 En ligne : https://doi.org/10.1111/j.1477-9730.2008.00502.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29490
in Photogrammetric record > vol 23 n° 124 (December 2008 - February 2009) . - pp 387 - 404[article]
Titre : A new approach for mountain areas cartography Type de document : Article/Communication Auteurs : Loïc Gondol , Auteur ; Arnaud Le Bris , Auteur ; François Lecordix , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 01/12/2008 Conférence : SDH 2008, 13th international symposium on Spatial Data Handling, Headway in spatial data handling 23/06/2008 25/06/2008 Montpellier France Proceedings Springer Importance : pp 315 - 333 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique
[Termes IGN] BD Topo
[Termes IGN] classification automatique
[Termes IGN] données vectorielles
[Termes IGN] montagne
[Termes IGN] représentation du relief
[Termes IGN] rocherRésumé : (Auteur) From now on, the French National Mapping Agency (IGN France) is set up with the BD TOPO®. This is a topographic vector database that covers the whole national territory. IGN has decided to product base maps at 1:25k and 1:50k from this database. On topographic mountain maps, rocks areas are among the most difficult map elements to represent, dealing with digital cartography. In the past, they were drawn manually by experienced cartographers, using graphic means and working with aerial photographs. Nowadays, we need to focus on two points with a digital approach. The first one is the detection and an automated classification of concerned areas. The next one is the development of an adapted cartographic representation of rocks and screes areas. This article presents the first results on these problems. As far as possible, we aim at having automated high mountain cartography with lower production costs. Also, we would like it to be as expressive as it was in previous maps. This is to keep the same cartographic quality of the current base map at 1:25k and 1:50k. Numéro de notice : C2008-002 Affiliation des auteurs : MATIS (1993-2011) Thématique : GEOMATIQUE Nature : Communication DOI : 10.1007/978-3-540-68566-1_18 En ligne : https://doi.org/10.1007/978-3-540-68566-1_18 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65037 Documents numériques
en open access
c2008-002_sdh_gondol.pdfAdobe Acrobat PDF Estimation de l’influence de la couverture forestière sur les pluies en montagne : exemple du massif de la Chartreuse / Dominique Dumas in Revue forestière française, vol 60 n° 6 (novembre - décembre 2008)
[article]
Titre : Estimation de l’influence de la couverture forestière sur les pluies en montagne : exemple du massif de la Chartreuse Type de document : Article/Communication Auteurs : Dominique Dumas, Auteur Année de publication : 2008 Article en page(s) : p. 711-726 Note générale : Bibliogr. Résumé en français et anglais Langues : Français (fre) Descripteur : [Termes IGN] Chartreuse, massif de la (Préalpes ; France)
[Termes IGN] forêt
[Termes IGN] forêt alpestre
[Termes IGN] montagne
[Termes IGN] pluieRésumé : Une gestion cohérente des eaux d’un massif montagneux nécessite une connaissance précise des précipitations arrivant au sol. Or, la forêt intercepte et retient un pourcentage plus ou moins élevé des pluies sur son feuillage diminuant du même coup la quantité d’eau réellement reçue par le sol. L’eau disponible pour l’écoulement, ou pour les réserves souterraines, est donc plus réduite que celle définie à partir des seuls relevés météorologiques. Sur le massif de la Chartreuse, l’influence sur les précipitations de la couverture forestière, fortement présente dans le paysage, reste encore mal appréciée. Cette première étude tente d’évaluer et de cerner la perte en eau liée à l’interception forestière à l’échelle d’un massif. Sur le massif de la Chartreuse, elle représente une lame d’eau annuelle d’environ 300 mm, soit 16 % des précipitations météorologiques annuelles reçues sur l’ensemble massif. Cette valeur, non négligeable, montre bien l’intérêt dans les approches hydroclimatiques d’une prise en compte de l’interception des pluies par la forêt, notamment sur ces espaces de moyenne montagne souvent fortement boisés. Numéro de notice : IFN_4243 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.4267/2042/28369 En ligne : https://doi.org/10.4267/2042/28369 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72569
in Revue forestière française > vol 60 n° 6 (novembre - décembre 2008) . - p. 711-726[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité IFN-001-P000589 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt Pixel-based Minnaert correction method for reducing topographic effects on a Landsat 7 ETM+ Image / Dong Lu in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 11 (November 2008)PermalinkPotential accuracy of image orientation of small satellites: a case study of CHRIS/Proba data / Ahmed Shaker in Photogrammetric record, vol 23 n° 123 (September - November 2008)PermalinkTERIA : commentaires et suggestions / Anne Fantuzzi in Géomètre, n° 2050 (juillet - août 2008)PermalinkUn test d'exploitation dans les fortes pentes pyrénéennes / Thibault Delesalle in Le Bois International : l'officiel du bois [édition verte], vol 2008 n° 22 (14 juin 2008)PermalinkForest biodiversity of the Gargano Peninsula and a critical revision of the syntaxonomy of the mesophilous woods of southern Italy / Edoardo Biondi in Fitosociologia, vol 45 n° 2 (2008)PermalinkMapping dominant vegetation communities at Meili Snow Mountain, Yunnan Province, China using satellite imagery and plant community data / Z. Zhang in Geocarto international, vol 23 n° 2 (April - May 2008)PermalinkPotential of Cartosat-1 images for topographic mapping / Costas Armenakis in Geomatica, vol 62 n° 1 (March 2008)PermalinkCartography of high mountain areas : testing of a new digital cliff drawing method / Loïc Gondol (01/02/2008)PermalinkHazard mapping and GIS / M. Christen in GIM international, vol 21 n° 11 (November 2007)PermalinkCartographie des zones de haute montagne : essais de cartographie numérique des rochers / Loïc Gondol in Le monde des cartes, n° 193 (septembre - novembre 2007)PermalinkFilling the voids in the SRTM elevation model: a tin-based delta surface approach / E. Luedeling in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 4 (September 2007)PermalinkExtraction of landcover themes out of aerial orthoimages in mountainous areas using external information / Arnaud Le Bris (2007)PermalinkLes grandes alpes dans la cartographie 1482-1885, 2. Volume 2, La cartographie des grands massifs alpins / L. Aliprandi (2007)PermalinkMéthodologie de modélisation spatialisée du rôle des peuplements forestiers dans la protection contre les chutes de blocs / Céline Le Hir in Revue internationale de géomatique, vol 16 n°3 - 4 (septembre – novembre 2006)PermalinkComparison of large-area land cover products with national forest inventories and CORINE land cover in the European Alps / Lars T. Waser in International journal of applied Earth observation and geoinformation, vol 8 n° 3 (September 2006)PermalinkArtificial neural networks for mapping regional-scale upland vegetation from high spatial resolution imagery / H. Mills in International Journal of Remote Sensing IJRS, vol 27 n° 11 (June 2006)PermalinkHochgenaue Generierung des DGM vom vergletscherten Hochgebirge : Potential von airborne Laserscanning / D. Lenhart (2006)PermalinkPotentiel des données ASAR-Envisat en bande C pour la détermination des caractéristiques de la neige humide en environnement alpin / Jean-Pierre Dedieu in Revue Française de Photogrammétrie et de Télédétection, n° 179 (Décembre 2005)PermalinkRemote sensing of landslides: an analysis of the potential contribution to geo-spatial systems for hazard assessment in mountainous environments / G. Metternicht in Remote sensing of environment, vol 98 n° 2-3 (15 october 2005)PermalinkToward an improved orthometric height system for Canada / R. Kingdon in Geomatica, vol 59 n° 3 (September 2005)Permalink