UID:
kobvindex_GFZ1782031448
Format:
135 Seiten
,
Illustrationen, Diagramme
ISBN:
978-3-7696-5283-3
,
9783769652833
ISSN:
0174-1454
Series Statement:
Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Universität Hannover Nr. 373
Note:
Auch veröffentlicht in: Deutsche Geodätische Kommission bei der Bayerischen Akademie der Wissenschaften, Reihe C, Nr. 871, München 2021, ISBN 978-3-7696-5283-3
,
Dissertation, Gottfried Wilhelm Leibniz Universität Hannover, 2021
,
Contents
1 Introduction
1.1 Motivation and objective
1.2 Problem statement and contributions
1.3 Reader's guide
2 State of the art
2.1 Image features and relative orientation
2.2 Efficient image matching
2.2.1 Reduction of the number of features per image
2.2.2 Reduction of the number of image pairs
2.2.3 Other integrated methods
2.3 Incremental and hierarchical image orientation
2.3.1 Incremental image orientation
2.3.2 Hierarchical image orientation
2.4 Global image orientation
2.4.1 Outlier detection in relative orientation
2.4.2 Global rotation estimation
2.4.3 Global translation estimation
2.5 Alternative solutions for image orientation
2.6 Discussion
3 Preprocessing
3.1 Time efficient image matching based on a random k-d forest
3.1.1 Construction of the random k-d forest
3.1.2 Determination of overlapping image pairs
3.1.3 Clustering images and discarding single images
3.1.4 Determination of relative orientation parameters
3.2 Robustifying the ROs for robust global image orientation
3.2.1 Detecting and eliminating RO outliers by checking compatibility of triplets
3.2.2 Detecting and eliminating RO outliers due to repetitive structure
3.2.3 Detecting and eliminating RO outliers of very short baselines and baselines parallel to the viewing direction
3.2.4 Identifying correct ROs of baselines parallel to the viewing direction
3.3 Discussion
4 Global image orientation
4.1 General Overview
4.2 Global rotation estimation
4.2.1 Rotation preliminaries and problem statement
4.2.2 Robust solution of global rotations
4.2.3 Discussion
4.3 Global translation estimation
4.3.1 Problem statements and relevant function model
4.3.2 Determination of globally consistent scale factors
4.3.3 Solving global translations based on relative translations
4.4 Robust bundle adjustment
4.5 Discussion
5 Experimental setup
5.1 Objectives of the designed experiments
5.2 Test datasets
5.3 Free parameter settings
5.4 Evaluation strategy and criteria
5.4.1 Preprocessing steps
5.4.2 Global image orientation
6 Evaluation
6.1 Evaluation of preprocessing steps
6.1.1 Performance of overlapping pair determination
6.1.2 Performance of the robustification of ROs
6.2 Evaluation of global image orientation
6.2.1 Ordered datasets
6.2.2 Unordered datasets
6.2.3 Problematic datasets
6.3 Synthesis
6.3.1 Preprocessing steps
6.3.2 Global image orientation
7 Conclusion and Outlook
Appendix
A. Proposition for very short baselines
B. Calculation of the discrepancy between relative orientation and ground truth exterior orientation parameters
B.l Discrepancy with respect to relative rotations
B.2 Discrepancy with respect to relative translations
C. Calculation of the mean translation errors
References
In:
Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Universität Hannover
Language:
English
Keywords:
Hochschulschrift
Author information:
Wang, Xin 1989-
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