Détail d'une collection
Documents disponibles dans la collection (466)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Modellgestützte Kostenprognose für den Aufbau qualitätsgesicherter Geodatenbestände / M. Stark (2005)
Titre : Modellgestützte Kostenprognose für den Aufbau qualitätsgesicherter Geodatenbestände Titre original : [Modèle de pronostic des coûts pour la constitution de bases de données géographiques de qualité] Type de document : Thèse/HDR Auteurs : M. Stark, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2005 Collection : DGK - C Sous-collection : Dissertationen num. 590 Importance : 128 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-5029-7 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] base de données localisées
[Termes IGN] coût
[Termes IGN] qualité des données
[Termes IGN] qualité totale
[Termes IGN] stratégieRésumé : (Auteur) Spatial geodatabases are basic condition for many modern traffic management and telematic services. By realising the digital road map and using modern positioning techniques the complex task of target guidance finally took up speed and meets the required maturity for market introduction. These geodatabases are not only indispensable for those services but their realisation and ongoing maintenance work is highly expensive. Data aging by less maintenance, data errors and incomplete databases will cause an increasing loss of acceptance. This errors can also cause additional work and the rising of the resulting costs. Therefore it must be the own interest of an enterprise to get an precise forecast of investment and the resulting costs. Such a forecast plays an important roll to set up a new business model. Regarding aspects of quality a prediction model for the build-up costs of geodatabases is presented in this work. By regarding the intermodal routing planner which had been realised within the official German research project MOBILIST the working tasks and their schedule are shown as well as the resulting costs to built up that intermodal database. With this database the interconnection of the street and railway network had been improved in order to ensure future individual mobility with respect to the increasing flood of traffic. It is shown that the total costs of realisation depends on the tasks of quality management. Costs of quality management can be higher than the total costs of realisation. This motivates the research about the influence of building-up strategies of geodatabases on quality management costs. By integrating the quality aspects in the prediction model it will be able to forecast not only the build-up costs but also identify the cheapest way of error detection and correction. This leads to the possibility to say which build-up strategy with respect to quality requirements is cheaper and better. It is proven by model calculations that it can be reasonable to reject own geodatabases and follow the new build-up strategy to buy a new geodataset and improve it by yourself. Furthermore the threshold value of quality requirements for the decision which way of quality inspection (full inspection or inspection by random sample) is given. With this prediction model of the total costs regarding quality requirements a method was developed to decide which strategy of building up a geodatabase will be useful. It is shown how to transfer this method into other fields of applications on geodatabases. Numéro de notice : 13433 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54965 Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 13433-01 37.00 Livre Centre de documentation Géomatique Disponible
Titre : Multi-Sensor-Photogrammetrie : Vision oder Wirklichkeit? Titre original : [Photogrammétrie multi-capteur : vision ou réalité ?] Type de document : Thèse/HDR Auteurs : Norbert Haala, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2005 Collection : DGK - C Sous-collection : Dissertationen num. 589 Importance : 101 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-5028-0 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation
[Termes IGN] classification
[Termes IGN] données laser
[Termes IGN] géoréférencement direct
[Termes IGN] lasergrammétrie
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle numérique de surface
[Termes IGN] segmentationIndex. décimale : 33.30 Photogrammétrie numérique Résumé : (Auteur) The application of multi-sensor systems for photogrammetric data collection has reached considerable interest. Within this habilitation treatise, their potential for spatial information collection is discussed exemplarily in the context of different application scenarios. This includes the increased degree of automation, which can be achieved for standard data processing as well as the chance to open up new areas of application for photogrammetric products and techniques. The combination of multiple sensors is first demonstrated by the example of integrated GPS/inertial systems, which are used to provide the transformation of the collected imagery to a reference coordinate system. This direct geo-ereferencing is applied for the geometric evaluation of airborne imagery alternatively to the indirect approach of image orientation based on standard aerial triangulation. Within the first part of the thesis the accuracy potential and different application scenarios of direct georeferencing are discussed. Another main point of interest is the suitable integration of the directly measured orientation parameters with the photogrammetric evaluation process. The combination of direct georeferencing and aerial triangulation is an important prerequisite for the calibration of the overall system. Additionally, the integrated processing allows to use the different sensors as complementary sources of information and helps to provide optimal solutions with respect to different application scenarios and accuracy requirements. The potential of integrated GPS/inertial systems is discussed exemplarily using data of digital airborne cameras. These systems facilitate the acquisition of multispectral images at high spatial resolution. Complementary to these sensors, airborne laser scanning provides an alternative data source, which is advantageous if the automatic collection of thematic object information is aspired. Compared to the use of standard panchromatic aerial images, especially the combination of image and height data is beneficial for the automatic reconstruction of topographic objects. Within the thesis this is demonstrated by a process aiming on the combined classification of built-up areas. The advantages of integrating height and image data are also discussed by the example of a combined segmentation process, which aims on the extraction of three-dimensional geometric primitives like straight lines and planar regions. Such an extraction of reliable and accurate geometric primitives is an important preprocessing step for 3D object reconstruction. For this reason, the segmentation combines the advantages of both data sources, the relatively simple interpretation of height data due to the restriction to geometric information on the one hand and the high density of information available from aerial images on the other hand. In addition to primary data sources as they are provided from different photogrammetric sensors, GIS data is frequently already available for a number of application scenarios. In the figurative sense, the use of GIS data can also be interpreted as the integration of a additional sensor data. The availability of GIS during automated collection of topographic objects is especially useful, since GIS provides information from already interpreted data. Within the thesis the advantages of use of existing GIS is demonstrated by processes aiming on the reconstruction of 3D building models from dense height models. Within the process given outlines of the buildings are integrated in order to support the segmentation process and to detect the underlying structure of the extracted geometric primitives. If improved methods of photogrammetric data collection are available new markets for new products can be opened. One example is the increasing demand for 3D city models, which are frequently applied in the context of virtual landscape visualisation. These 3D city models can also be integrated to a suitable multi-sensor, multi-data system in order to allow for a GIS-based georeferencing of terrestrial images. Such an automatic registration of terrestrial images to a virtual 3D model of the environment is for example required during update or extension of the visible building models. As it is discussed in the final part of the thesis, the result of this orientation process can also be used for the presentation of object related information in the context of location based services. Numéro de notice : 13432 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : HDR DOI : sans En ligne : https://www.ifp.uni-stuttgart.de/dokumente/Dissertationen/habil_c-589.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54964 Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 13432-01 33.30 Livre Centre de documentation Photogrammétrie - Lasergrammétrie Disponible Nicht-lineare Sensitivitätsanalyse gezeigt an Beispielen zu bewegten Objekten / Volker Schwieger (2005)
Titre : Nicht-lineare Sensitivitätsanalyse gezeigt an Beispielen zu bewegten Objekten Titre original : [Analyse de sensibilité non linéaire montrée avec des exemples d'objets mobiles] Type de document : Thèse/HDR Auteurs : Volker Schwieger, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2005 Collection : DGK - C Sous-collection : Dissertationen num. 581 Importance : 100 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-5020-4 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] analyse de sensibilité
[Termes IGN] coordonnées GPS
[Termes IGN] corrélation
[Termes IGN] filtre de Kalman
[Termes IGN] intégrale de Fourier
[Termes IGN] modèle stochastique
[Termes IGN] objet mobile
[Termes IGN] régression non linéaireIndex. décimale : 30.60 Géodésie spatiale Résumé : (Auteur) One important task of engineering geodesy is the evaluation of measurements by suitable models and the validation and optimisation of these models. Currently more complex and non-linear models are used in engineering geodesy. Therefore a model independent validation method, the variance-based sensitivity analysis method is introduced and applied to moving objects. An overview about different sensitivity analysis methods is given. Thereby the focus is on sample-based methods, that base on Monte-Carlo simulation. First of all the regression analysis and the rank regression analysis are described. These methods are used for the sensitivity analysis of linear respectively non-linear but monotone models. Subsequently the importance of a sensitivity analysis methods that are independent of model characteristics is shown. These are SOBOLs method, that uses multidimensional averaging to get quantitative results and the FOURIER Amplitude Sensitivity Test, that realises the same in the frequency domain. The presented methods are applied for two examples. Firstly the configuration for the height monitoring of a church is validated. Secondly the determination of a trajectory of motor vehicle using a circle model is controlled. For both applications adapted KALMAN filter algorithms are used. For the height monitoring problem a non-linear model behaviour can not be proved. Besides it can be shown that the variances of some height points have a decisive influence on the variances of the estimated movement parameters. For the second application, the analysis shows that the variances of the state parameters of the trajectory determination are effected decisively by the variances of the GPS coordinates. The model shows a non-linear as well as a non-additive behaviour. Numéro de notice : 13268 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54948 Réservation
Réserver ce documentExemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 13268-01 30.60 Livre Centre de documentation Géodésie Disponible 13268-02 30.60 Livre Centre de documentation Géodésie Disponible Wavelettransformation hybrider Geländemodelle / G. Beyer (2005)
Titre : Wavelettransformation hybrider Geländemodelle Titre original : [La transformation en ondelettes des modèles hybrides de terrain] Type de document : Thèse/HDR Auteurs : G. Beyer, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2005 Collection : DGK - C Sous-collection : Dissertationen num. 570 Importance : 116 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-5009-9 Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] compression de données
[Termes IGN] compression par ondelettes
[Termes IGN] modèle numérique de terrain
[Termes IGN] transformation en ondelettesIndex. décimale : 33.30 Photogrammétrie numérique Note de contenu : 1 Einleitung
2 WaveletTransformation zur Analyse, Approximation und Kompression
2.1 Integraltransformationen
2.2 Kontinuierliche Wavelettransformation
3 Diskrete Wavelettransformation
3.1 Matrizenbeziehungen diskreter Funktionen
3.2 Konzept der Multiskalenanalyse
3.3 Konstruktion der diskreten Wavelets
3.3.1 Konstruktion der eindimensionalen Wavelets
3.3.2 Konstruktion der zweidimensionalen Wavelets
3.4 Verfahren der diskreten Wavelettransformation
3.4.1 Verfahren der 1DWavelettransformation
3.4.2 Verfahren der 2DWavelettransformation
3.5 Wavelettransformation einer zweidimensionalen Polynomfunktion
3.5.1 Wavelettransforination einer Funktion z = xy
3.5.2 Wavelettransformation einer Polynomfunktion z = P(x, y)
3.6 Momente
4 Digitale Geländemodelle
4.1 Modelle für Kurven und Flächen
4.2 Neigung und Krümmung
4.3 Raumkurven in Geländemodellen
4.3.1 Explizite Beschreibung
4.3.2 Implizite Beschreibung
5 Wavelettransformation digitaler Geländemodelle
5.1 Wavelettransformation der Geländefläche
5.2 Wavelettransformation von Kurven in expliziter Darstellung
5.3 Wavelettransformation von Kurven in impliziter Darstellung
6 Kompression von Geländedaten
6.1Vorbemerkungen
6.2 Kompressionsverfahren
6.2.1 Sperrfilter
6.2.2 Schwellwertverfahren
6.3 Kompression von Geländeflächen
6.1 Kompression von Geländekurven
6.5 Probleme bei hybriden Daten
6.5.1 Gemeinsame Kompression von Vektor- und Rasterdaten
6.5.2 Glättungsmaße
6.5.3 Kantenanpassung
7 Analyse von Geländemodellen mittels Wavelettransformation (Folgeprodukte)
7.1 Approximationseigenschaften
7.1.1 Theoretischer Hintergrund
7.1.2 Approximationseigenschaften bei der diskreten Wavelettransformation
7.1.3 Skalierung der Waveletkoeffizienten
7.2 Lokalisierungseigenschaften
7.2.1 Eindirnensionale Wavelettransforrnation
7.2.2 Zweidimensionale Wavelettransformation
7.3 Höhen- und Gefällefinien
8 Ausblick
8.1 Wavelettransformation raumbezogener Geoinformationen
8.2 Weitere FragestellungenNuméro de notice : 13255 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54939 Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 13255-01 33.30 Livre Centre de documentation Photogrammétrie - Lasergrammétrie Disponible Zur Parametrisierung radialsymmetrischer Dichtemodelle für die Erde / H. Wziontek (2005)
Titre : Zur Parametrisierung radialsymmetrischer Dichtemodelle für die Erde Titre original : [Pour la paramétrisation de modèles denses symétriques pour la Terre] Type de document : Thèse/HDR Auteurs : H. Wziontek, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2005 Collection : DGK - C Sous-collection : Dissertationen num. 587 Importance : 102 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-5026-6 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] croute terrestre
[Termes IGN] densité
[Termes IGN] équation de Poisson
[Termes IGN] masse de la Terre
[Termes IGN] potentiel de pesanteur terrestre
[Termes IGN] vitesseIndex. décimale : 30.40 Géodésie physique Résumé : (Auteur) Even in the frame of a spherical symmetric, non-rotating, linear elastic and isotropic model an independent description of the Earth's density and elastic properties, as usual in most existing models, has no unique solution and thus leads to an over-parametrisation. Whereas the elastic properties can be verified well with the help of seismic traveltimes, the density remains much less determinate. With this work, an adequate description of a normal density distribution based on a physically meaningful, non-empirical parametrisation and an abstraction to the essential physical properties will be presented. Beside the postulate on homogeneity of the chemical composition and phase inside each shell and an adiabatic gradient of temperature, the main assumption is hydrostatic equilibrium, which must be fulfilled in a global sense for the widest parts of the Earth's interior. Under these circumstances the Williamson-Adams-equation holds as a fundamental relation between density and seismic velocities. Deviations from the underlying suppositions can be described, if necessary and appropriate information exists, a priori by the Bullen-Parameter. By the physical relation between density and seismic velocities alone a parametrisation is not given. With the help of a postulate on a pressure-density-relation in historical density laws it is possible to develop a suitable function. A differential equation follows from the Poisson equation for the inner gravitational potential in conjunction with that postulate and the assumption of hydrostatic equilibrium. Its special solutions lead in consistence with seismic data to a parametrisation of the density. Extensive investigations show that only functions in even powers of the radius allow a best and stable fit to the seismic data, while ordinary polynomials most common in use are less eligible for a description of the density. Furthermore, to obtain a stable determination of the density a strict separation of the data-types is unavoidable. From the seismic velocities it is only possible to infer the shape of the density-function within the shells, additional data as the density below the crust-mantle-boundary, the geodetic values for mean mass and mean moment of inertia and the frequencies of the free oscillations are necessary to fix the absolute level in each shell. Under consideration of the aforementioned aspects it is possible to obtain a unique and stable description of a normal density distribution in accordance with seismic and geodetic information. Thus the presented parametrisation can serve as a basis for anomaly analysis in geodesy and geophysics. Numéro de notice : 13274 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54953 Réservation
Réserver ce documentExemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 13274-01 30.40 Livre Centre de documentation Géodésie Disponible 13274-02 30.40 Livre Centre de documentation Géodésie Disponible Atmosphärische und ozeanische Einflüsse auf die Rotation der Erde - Nummerische Untersuchungen mit einem dynamischen Erdsystemmodell / Florian Seitz (2004)PermalinkAutomatische Extraktion urbaner Straßennetze aus Luftbildern / Stefan Hinz (2004)PermalinkDas stochastische Modell bei der VLBI-Auswertung / V. Tesmer (2004)PermalinkEin integritätswahrendes Messsystem für kinematische Anwendungen / W. Stempfhuber (2004)PermalinkIdentifizierung konsistenter Datengruppen am Beispiel der Kongruenzuntersuchung geodätischer Netze / Frank Neitzel (2004)PermalinkKonzeption und Umsetzung eines Informationssystems zur geodätischen Deformationsanalyse / J. Zimmermann (2004)PermalinkModellierung von Oberflächen mit Diskontinuitäten / Andrzej Borkowski (2004)PermalinkSimultane Schätzung von Topographie und Dynamik polarer Gletscher aus multi-temporalen SAR Interferogrammen / F.J. Meyer (2004)PermalinkAnalyse und Optimierung geodätischer Messanordnungen unter besonderer Berücksichtigung des Intervallansatzes / S. Schön (2003)PermalinkPermalink