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  • 1
    Series available for loan
    Series available for loan
    Hannover : Universität
    Call number: S 99.0139(320)
    Type of Medium: Series available for loan
    Pages: 103 Seiten , Illustrationen
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover Nr. 320
    Classification:
    Geodesy
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Series available for loan
    Series available for loan
    Hannover : Universität
    Call number: S 99.0139(322)
    Description / Table of Contents: GNSS, multipath, gain pattern, Jones vector, signal power. - Mehrwegeffekte, Antennengewinndiagramm, Jones Vektor, Signalstärke
    Type of Medium: Series available for loan
    Pages: xv, 148 Seiten , Illustrationen, Diagramme
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover Nr. 322
    Classification:
    Geodesy
    Parallel Title: Erscheint auch als Carrier-phase multipath in satellite-based positioning
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Monograph available for loan
    Monograph available for loan
    Hannover : Leibniz Universität Hannover
    Associated volumes
    Call number: S 99.0139(327)
    In: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz-Universität Hannover
    Type of Medium: Monograph available for loan
    Pages: 139 Seiten , Illustrationen, Diagramme
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover Nr. 327
    Language: English
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  • 4
    Call number: S 99.0139(362)
    In: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover, Nr. 362
    Type of Medium: Series available for loan
    Pages: XV, 143 Seiten , Illustrationen, Diagramme
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover Nr. 362
    Language: English
    Note: 1 Introduction 1.1 Contributions 1.2 Thesis outline 2 Basics 2.1 Convolutional Neural Networks 2.1.1 Training 2.1.2 CNN Architectures 2.2 Active Shape Model 2.3 Monte Carlo based optimisation 3 State of the art 3.1 Data driven approaches 3.1.1 Viewpoint prediction 3.1.2 3D pose prediction 3.1.3 3D pose and shape prediction 3.2 Model driven approaches 3.2.1 Shape priors 3.2.2 Scene priors 3.2.3 Shape aware reconstruction 3.2.4 Optimisation 3.3 Discussion 4 Methodology 4.1 Overview 4.1.1 Input 4.1.2 Problem statement 4.1.3 Scene layout 4.1.4 Detection of vehicles 4.2 Subcategory-aware 3D shape prior 4.2.1 Geometrical representation 4.2.2 Mode Learning 4.3 Multi-Task CNN 4.3.1 Input branch 4.3.2 Vehicle type branch 4.3.3 Viewpoint branch 4.3.4 Keypoint/Wireframe branch 4.3.5 Training 4.4 Probabilistic vehicle reconstruction 4.4.1 3D likelihood 4.4.2 Keypoint likelihood 4.4.3 Wireframe likelihood 4.4.4 Position prior 4.4.5 Orientation prior 4.4.6 Shape prior 4.4.7 Inference 4.5 Discussion 5 Experimental setup 5.1 Objectives 5.2 Test data 5.2.1 KITTI benchmark 5.2.2 ICSENS data set 5.3 Parameter settings and training 5.3.1 Learning the ASM 5.3.2 Training of the CNN 5.4 Evaluation strategy and evaluation criteria 5.4.1 Detection 5.4.2 Multi-Task CNN 5.4.3 Probabilistic model for vehicle reconstruction 5.4.4 Comparison to related methods 6 Results and discussion 6.1 Detection 6.2 Evaluation of the CNN components 6.2.1 Evaluation of the viewpoint branch 6.2.2 Evaluation of the vehicle type branch 6.3 Ablation studies of the model components 6.3.1 Analysis of the observation likelihoods 6.3.2 Analysis of the state priors 6.4 Analysis of the full model for vehicle reconstruction 6.4.1 Evaluation of the pose 6.4.2 Evaluation of the shape 6.4.3 Analysis of further aspects 6.5 Comparison to related methods 6.6 Discussion 6.6.1 Likelihood terms 6.6.2 State priors 6.6.3 Full model 6.6.4 Inference 7 Conclusion and outlook , Sprache der Kurzfassungen: Englisch, Deutsch
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  • 5
    Call number: S 99.0139(361)
    In: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover, Nr. 361
    Type of Medium: Series available for loan
    Pages: 108 Seiten , Illustrationen, Diagramme
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover Nr. 361
    Language: English , German
    Note: 1 Introduction 1.1 Motivation 1.2 Problem Statement and Contributions 1.3 Structure 2 State-of-the-art 2.1 Integration of Object Knowledge in Image Space 2.2 Integration of Object Knowledge in Object Space 2.3 Discussion 3 Photogrammetric Pose Estimation with a Generalised Building Model 3.1 Overview 3.2 Hybrid Bundle Adjustment 3.2.1 Modelling Relations of Object Points to Model Planes 3.2.2 Functional Model 3.2.3 Stochastic Model 3.2.4 Robust Estimation 3.2.5 Determination of Initial Values 3.3 Workflow 3.3.1 Global Adjustment 3.3.2 Sliding Window Adjustment 4 Assignment Under Generalisation Effects 4.1 Generalisation Effects 4.2 Direct Assignment: Point-Plane-Matching 4.3 Indirect Assignment: Plane-Plane-Matching 4.3.1 Indirect Assignment without ROIs 4.3.2 Indirect Assignment with ROIs 4.4 Summary of the Assignment Parameters 5 Experiments 5.1 Setup of the experiments 5.1.1 Scenarios 5.1.2 Sequences 5.1.3 Evaluation 5.1.4 Structure of the Experiments 5.2 Dataset 5.2.1 Hardware 5.2.2 Data 5.3 Parameter Settings and Implementation 6 Results and Discussion 6.1 The Short Sequence: Generalisation & Systematic Effects 6.2 The Long Sequence: Generalisation & Systematic Effects, Block Deformations... 6.3 Check Point Errors versus Estimated Standard Deviations 6.4 Sliding Window versus Global Adjustment 6.5 Assignment Strategies 6.6 The Full Sequence 6.7 Parameter Variation 6.7.1 Fictitious Distance Observations of Tie Points 6.7.2 Maximum Distance of Tie Points to Model Planes 6.7.3 Estimation of Vertex Coordinates 6.7.4 Window Size Nws and Overlap AW 7 Conclusion and Outlook , Kurzfassungen in Deutscher und Englischer Sprache
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  • 6
    Call number: S 99.0139(359)
    In: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover, Nr. 359
    Type of Medium: Series available for loan
    Pages: 134 Seiten , Diagramme, Karten
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover Nr. 359
    Language: German , English
    Note: 1 Einleitung 1.1 Motivation 1.2 Zielsetzung 1.3 Gliederung 2 Verwandte Arbeiten 2.1 Grundbegriffe 2.1.1 Raumbezogene Objekte 2.1.2 Ähnlichkeit 2.1.3 Relation 2.1.4 Schema 2.2 Data-Matching 2.2.1 Klassifikation von Zuordnungsverfahren auf Objektebene 2.2.2 Herausforderungen bei der Objektzuordnung 2.2.3 Ausgewählte, merkmalsbasierte Verfahren 2.2.4 Ausgewählte, relationale Verfahren 2.3 Schema-Matching 2.3.1 Klassifikation von Zuordnungsverfahren auf Schemaebene 2.3.2 Herausforderungen bei der Zuordnung auf Schemaebene 2.3.3 Ausgewählte Schema-Matching-Verfahren im geographischen Kontext 3 Grundlagen 3.1 Ähnlichkeitsmaße 3.1.1 Geometrische Ähnlichkeit 3.1.2 Topologische Ähnlichkeit 3.1.3 Semantische Ähnlichkeit 3.2 Relationstypen 3.2.1 Relationen auf Objektebene 3.2.2 Relationen auf Schemaebene 3.3 Graphentheorie 3.3.1 Graph-Definitionen 3.3.2 Graph-Matching 3.3.3 Graph-Partitionierung / Graph-Cut 3.4 Ganzzahlige lineare Programmierung 4 Entwicklung von Data-Matching-Verfahren für verschiedene Objektgeometrien 4.1 Zuordnung von Polygonobjekten 4.1.1 Geometrischer Parameter 4.1.2 Heterogenitätsparameter 4.1.3 Erzeugung eines kombinierten Ergebnisses für das Schema-Matching 4.2 Zuordnung von unterschiedlichen Objektgeometrien 5 Entwicklung von Schema-Matching-Verfahren basierend auf Instanzdaten 5.1 Formale Problemdefinition 5.1.1 Synthetisches Beispiel 5.2 Einfache Lösungsverfahren 5.2.1 Beschränkung auf 1:1-Zuordnungen (Max-Match) 5.2.2 Beschränkung auf zwei Cluster (Min-Cut) 5.3 Einsatz von Heuristiken 5.4 Einsatz der ganzzahligen linearen Programmierung 5.4.1 Optimierungsziele und Bedingungen 5.4.2 Kombination von Optimierungszielen 5.4.3 Einführung einer festen Clustergröße (MaxScoreHardConstraintFixedSize) 5.4.4 Optimale Lösung ohne Nullcluster (MaxScoreHardConstraintFixedSizeNonEmpty) 5.4.5 Vereinfachtes Programm (MaxScoreHardConstraintFixedSizeUnique) 6 Experimente mit Realdaten und Untersuchungsergebnisse 6.1 Datenquellen und Datenvorverarbeitung 6.1.1 Datenquellen 6.1.2 Testgebiete 6.1.3 Datenvorverarbeitung 6.2 Ergebnisse des Data-Matching 6.2.1 Testgebiet A: ALKIS OSM in Hannover 6.2.2 Testgebiet B: ALKIS ATKIS in Hameln 6.2.3 Testgebiet C: ATKIS GDF in Hannover-Wedemark 6.2.4 Zusammenfassung der Data-Matching-Ergebnisse 6.3 Ergebnisse des Schema-Matching 6.3.1 Testgebiet B: ALKIS ATKIS in Hameln 6.3.2 Testgebiet A: ALKIS OSM in Hannover 6.3.3 Testgebiet C: ATKIS GDF in Hannover-Wedemark 6.3.4 Zusammenfassung aller Schema-Matching-Ergebnisse 7 Zusammenfassung und Ausblick , Kurzfassungen in Deutscher und Englischer Sprache
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  • 7
    Call number: S 99.0139(348)
    In: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover
    Type of Medium: Series available for loan
    Pages: 145 Seiten , Illustrationen, Diagramme, Karten
    ISSN: 0174-1454
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover Nr. 348
    Language: English
    Note: Dissertation, Gottfried Wilhelm Leibniz Universität Hannover, 2018 , Introduction 1.1 Synthetic Aperture Radar from Spaceborne Remote Sensing 1.2 Satellite-Based Monitoring of the Terrestrial Water Cycle 1.3 Remote Sensing of Water Storage in Central Asia 1.4 GFZ Activities in Central Asia and Study Areas in Kyrgyzstan 1.5 Research Objectives 1.6 Outline and Structure of the Thesis 2 Fundamentals of Synthetic Aperture Radar Remote Sensing 2.1 SAR Satellite Data 2.2 SAR Satellite Missions 2.3 Interferometric SAR 2.4 DInSAR Time Series with PSI 2.5 DInSAR Time Series with SBAS 2.6 Feature Tracking 3 State of the Art 3.1 Inter- and Intra-Annual Glacier Surface Velocities from SAR Data 3.2 Inter- and Intra-Annual Glacier Elevation Changes from SAR Data 3.3 Inter- and Intra-Annual Loading-Induced Crustal Deformations at Water Reservoirs from SAR Data 4 Quantification of Inylchek Glacier Surface Kinematics 4.1 Abstract 4.2 Introduction 4.3 Inylchek Glacier 4.4 Data and Methodology 4.4.1 TerraSAR-X Data Set 4.4.2 Feature Tracking 4.4.3 Decomposition to 3D Velocities 4.5 Results 4.6 Discussion 4.6.1 Error Estimation 4.6.2 Inter-Annual Kinematics of the Upper Southern Inylchek Glacier Branch .... 4.6.3 Lake Level Extent and GLOF 4.7 Conclusions 4.8 Acknowledgements 4.9 Author Contribution 5 Quantification of Inylchek Glacier Elevation Changes 5.1 Abstract 5.2 Introduction 5.3 Data 5.3.1 TanDEM X Data 5.3.2 External DEMs 5.3.3 Glacier Outlines of Inylchek 5.4 Methodology 5.4.1 Interferometric Processing of TanDEM-X Data 5.4.2 Alignment of the SRTM and TDX DEMs 5.4.3 Radar Penetration Correction 5.4.4 DEM Elevation Difference Calculation 5.4.5 Accuracy Assessment 5.5 Results and Discussion 5.5.1 Uncertainty of Measurements 5.5.2 DEM Alignment Quality 5.5.3 Inylchek Elevation Changes 5.6 Conclusions 5.7 Acknowledgements 5.8 Author Contribution 6 Quantification of Toktogul Water-Level-Induced Ground Deformations 6.1 Abstract 6.2 Introduction 6.3 Materials and Methods 6.3.1 Lake Altimetry 6.3.2 DInSAR processing of Envisat ASAR and Sentinel-1 Data 6.3.3 Atmospheric Correction 6.3.4 Deformation Decomposition of SentineH Data 6.3.5 Modelling of Elastic Surface Deformations 6.4 Results 6.4.1 Atmospheric Corrections 6.4.2 Ground Deformation 6.5 Discussion 6.5.1 Atmospheric Corrections 6.5.2 Ground Deformation 6.6 Conclusions 6.7 Acknowledgments 6.8 Author Contribution 7 Subsequent Work 7.1 Scope of the Chapter 7.2 GNSS-derived Inylchek Glacier Surface Kinematics 7.2.1 Abstract 7.2.2 Author Contribution 7.3 Monitoring of Lake Merzbacher's GLOF Event 7.3.1 Abstract 7.3.2 Author Contribution 7.4 Ongoing Work at GFZ Based on the Results of this Thesis 8 Summary and Outlook 8.1 Summary of Main Results 8.1.1 Methodological Aspects 8.1.2 Monitoring of Short-Time Changes 8.2 Outlook Bibliography
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  • 8
    Call number: S 99.0139(356)
    In: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover
    Type of Medium: Series available for loan
    Pages: x, 111 Seiten , Illustrationen, Diagramme
    ISSN: 0174-1454
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover Nr. 356
    Language: English
    Note: Dissertation, Gottfried Wilhelm Leibniz Universität Hannover, 2020 , Abstract Zusammenfassung Acknowledgments Definition, Acronyms and Symbols 1 Introduction 1.1 Motivation 1.2 Person Re-Identification 1.3 Problem statement and research objective 1.4 Contribution 1.5 Outline of this thesis 2 Related work 2.1 Scope 2.2 Historical overview 2.3 Terminology and strategies 2.4 Handcrafted feature extraction methods 2.5 Data-driven feature extraction methods 2.6 Person view specific methods 2.7 Re-Ranking based methods 2.8 Domain adaptation methods 2.9 Discussion 3 Fundamentals 3.1 Fisheye camera geometry and projection model 3.2 Feature extraction 3.2.1 GOG/XQDA - a handcrafted feature extraction method 3.2.2 TriNet and SRNN - two data-driven feature extraction methods .... 4 A new approach for person re-identification 4.1 General overview 4.2 Input and assumptions 4.3 Projection alignment 4.4 View classification and sampling 4.5 Per-view matching 4.6 Fusion 4.7 Discussion of the approach 5 Experimental evaluation 5.1 General structure of this chapter 5.2 Multi-view investigations 5.2.1 Datasets 5.2.2 Training and inference procedure 5.2.3 Evaluation and discussion 5.3 Bird's eye view investigations 5.3.1 Datasets 5.3.2 Training and inference procedure 5.3.3 Evaluation and discussion 5.4 Influence of data 5.4.1 Datasets 5.4.2 Training and inference procedure 5.4.3 Evaluation and discussion 5.5 Fisheye investigations 5.5.1 Datasets 5.5.2 Training procedure 5.5.3 Projection alignment 5.5.4 Person view classification 5.5.5 Assessment of PRID results 5.5.6 Comparison with a contemporary approach 5.5.7 Qualitative comparison 6 Conclusions and future work A Datasets A.l Our novel datasets A.2 Public datasets References , Sprache der Zusammenfassungen: Englisch, Deutsch
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  • 9
    Call number: S 99.0139(364)
    In: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover, Nr. 364
    Type of Medium: Series available for loan
    Pages: XVI, 121 Seiten , Illustrationen, Diagramme
    ISBN: 978-3-7696-5268-0
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Universität Hannover Nr. 364
    Language: English
    Note: Zusammenfassung in englisch und deutsch Seite v-vii
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  • 10
    Series available for loan
    Series available for loan
    Hannover : Leibniz Universität Hannover
    Associated volumes
    Call number: S 99.0139(325)
    In: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz-Universität Hannover
    Type of Medium: Series available for loan
    Pages: IX, 46, 27 ungezählte Seiten , Illustrationen, Diagramme
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover Nr. 325
    Language: English
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