Jul 16, · Abstract: This thesis aims to bridge the gaps between thematic mapping and scientific visualization and to achieve their synergetic effects for the visual analysis of big data. Firstly, a systematical comparative study of thematic cartography and scientific visualization is conducted Formalities. Please take note: These specifications apply for bachelor’s and master’s theses. You can find the regulations applying to the diploma thesis in the §§ of the ADPO (General Academic and Examination Regulations) and the FPSO (Departmental Study and Examination Regulations) of your degree program Submitting your dissertation TUM has approx. doctoral graduates each year (Image: Adobe Stock) Doctoral candidates according to the Doctoral Regulations, effective 1
Doctoral Theses | TUM University Library
Contact: Dr. Ruoxin, Zhu. Electronic Version of PhD Thesis. The population coverage of public transit systems is an important indicator of public transit accessibility. Traditionally, the assessment of transit catchment areas is mainly focused on walking as the access mode. The recent emerging dockless shared bikes are widely used for connecting with public transit systems and provide new chances to expand the population coverage of public transit.
This project aims to assess how dockless shared bikes could expand the transit catchment areas using massive bike trajectories. To achieve this aim, the project has three objectives: 1 proposing a fast method to generate network-based transit catchment areas for non-motorized transport; 2 proposing methods to measure biking distances from high-detailed bike trajectories; 3 conducting tum phd thesis studies to evaluate the effectiveness of the proposed methods and discussing policy tum phd thesis for the planning of public transit and dockless shared bikes.
Diao Lin. This dissertation focuses on investigating the bike-metro integration using spatial movement data and supporting a systematic assessment of accessibility to public transit. Specifically, it serves three research objectives: 1 exploration of biking distances at individual transit stations from trajectory and smart card data, 2 investigation of transit catchment area to raise the public awareness of the transit accessibility at a general level, and 3 inspection of accessibility constrained by crowdedness at a fine-grained level.
This work addresses the challenge of understanding a place in GIScience by investigating visual and spatial semantic property in voluntarily collected images with deep learning methods. Two place representations are proposed to unify these properties in a probabilistic perspective of understanding places. The proposed computational models which are based on comparative learning and variational autoencoder are proved to be able to learn the probabilistic place representations from image data.
Ekaterina Chuprikova. The growing importance of data-driven science and advances in computational capacity offer new opportunities for the analysis and visualization of geospatial and heterogeneous data. This dissertation addresses the challenges of analytical reasoning under conditions of uncertainty when working with spatial data.
It serves three research objectives: 1 to evaluate the feasibility of the Bayesian Network in representing conditional dependencies among heterogeneous spatial data; 2 to implement visual analytics scenarios that can demonstrate human-data discourses; 3 to build a prototype of a Bayesian Network-enabled visual analytical system dedicated to geospatial data classification tasks. Road Network Conflation is concerned with finding accurate mappings between geographical structures of road networks.
This thesis establishes Road Network Conflation within a taxonomy of georeferencing methods and classifies and compares common approaches to the problem. A novel approach called Iterative Hierarchical Conflation IHC is introduced, tum phd thesis, which systematically accounts for the resolution of ambiguities. The IHC is evaluated using several samples from digital maps of different vendors.
Results show that the IHC offers advantages especially in terms of correctness, speed and complexity. Labeling spatial trajectories, such as map matching, activity recognition, tum phd thesis, can ease the utilization of the imprecise and semantic poor spatial trajectories for location-aware applica-tions. This thesis studies the problem from a unified perspective using map matching and taxi status inference.
Comprehensive probabilistic models are learned from the training data using a chain structure graphical model with feature selection, which are tested to be effective and feasible on a real world dataset, tum phd thesis.
This thesis aims to bridge the gaps between thematic mapping and scientific visualization and to achieve their synergetic effects for the visual analysis of big data. Firstly, a systematical comparative study of thematic cartography and scientific visualization is conducted. The study shows that these two disciplines reveal different visual analytical levels and are mutually complementary, tum phd thesis.
Next, extensive experiments of visually analyzing massive real-world taxi tum phd thesis car data FCD have been carried out.
The experiment tum phd thesis demonstrate that the techniques from thematic mapping and scientific visualization can strongly support users to win insight into the tum phd thesis data. In this research, the concept of mapping goes beyond the principle of mapping an object as a conceptual geographic entity with a distinct spatial, temporal and attributive identity.
The main goal is to present a conceptual model for managing geo-knowledge which handles real world dynamisms, tum phd thesis. It uses a generic event-oriented perspective to implicitly represent causal relationships among different components of a Spatio-Temporal Information System.
From this new perspective, the objects in space and time are considered merely as information elements of the events, which are connected to other event elements through internal or external processes.
This thesis focuses on the visual exploration of a specific type of moving geoobjects, namely the spatially extended objects or phenomena. Visual analytical approaches are developed and implemented to study the dynamics of the spatio-temporally evolving polygons.
The lightning data are chosen as a real-world case. In addition to a generic concept for the movement analysis of spatially extended objects, the thesis put forward a number of synchronized cartographic and non-cartographic visual analytical approaches for the clusters. An image map is a composition of remote sensing imagery and cartographic symbolisation, tum phd thesis.
This work revisits the concept of image maps and shows that the conventional two-tiered structure can tum phd thesis extended by the concise image map design, according to which a differentiated visual hierarchy can be established. Therefore, tum phd thesis, design strategies are developed that address the radiometric design of raster imagery in the same manner as the graphical design of tum phd thesis symbols.
User tests evaluate several tum phd thesis image map design strategies that prove to be more effective and user friendly. This thesis is devoted to the conflation of two heterogeneous data sources - road vectors and geo-referenced images.
The contributions of the Congruent Hybrid Model CHM include:1 a linear feature extraction approach, tum phd thesis, which consists of Elastic Circular Mask ECM algorithm and the Genetic Algorithm GA -based grouping approach;2 a Sparse Matching Algorithm SMA approach; tum phd thesis 3 a performance evaluation of two transformation functions.
The CHM model can be used directly in the geovisualization applications, and with some modifications it is also suitable for the classical georeferencing problem.
Die Visualisierungen dreidimensionaler Stadtmodelle erschließen bisher nicht das Potential, der kombinierten geometrisch semantischen Informationsdarstellung. Der aus dem Nicht-Photorealistischen-Rendering bekannte Ansatz der Informationsreduzierung durch Abstraktion lässt sich mit kartographischen Gestaltungsprinzipien kombinieren und liefert unter Einbeziehung von Nutzerpräferenzen neue Formen der Geo-Informationskommunikation auf der Basis von Stadtmodelldaten.
This thesis is dedicated to a novel approach for the design of customized routing maps which demonstrate the route along with the fast rendering of a right amount of routing-relevant information that matches the cognitive capacity of the user on route.
Given a route with mono- or multimodality, the proposed approach first estimates the salience of individual mapping objects by combining the passive salience from internal characteristic of spatial data and the active salience from the participant. The achieved results are visualized in multi-scale routing map with a dynamic labeling algorithm.
The proposed approach is implemented as web-based services. Its feasibility has been verified in several experiments. Electronic Version of PhD Theses. Das übergeordnete Ziel dieser Arbeit ist ein Beitrag zur kulturvergleichenden Kartographie. Ausgehend von der Annahme, dass Unterschiede zwischen den Karten verschiedener Kulturen tum phd thesis, ist eine bestimmte Art von Kartenzeichen als Beispiel herangezogen worden, tum phd thesis.
Dabei handelt es sich um Kartenicons, deren Gemeinsamkeit normalerweise in ihrer geringen Größe und weitgehenden Isoliertheit besteht. Zu deren Analyse wurde auf der Basis bestehender Ansätze ein neues Zeichenmodell entwickelt. Für jedes der Kartenicons deutsche und chinesische wurden 8 Attribute bestimmt, deren Vergleich schließlich 25 wesentliche Unterschiede zwischen den beiden Länderauswahlen ergab.
Um diese zu erklären, wurde versucht, kulturelle Eigenschaften heranzuziehen. Schließlich führte dies zur Formulierung von 38 Hypothesen über mögliche Beziehungen zwischen Eigenheiten der deutschen bzw. chinesischen Kultur und Eigenheiten der in diesen beiden Ländern produzierten Kartenicons. Die vorliegende Arbeit behandelt die visuelle Anreicherung thermaler Daten auf Gebäudefassaden imstädtischen Raum.
Wärmestrahlung, messtechnisch als bildhafte Thermogramme erfasst, tum phd thesis, liefern neuenicht sichtbare Informationen über den Gebäudezustand und tum phd thesis als Rohdaten für diekartographische Aufbereitung zu thermalen Fassadenkarten für planare 2D wie auch kartenverwandteräumlich virtuelle 3D Darstellungen.
Aus einer Kombination der bekannten Gestaltungsregeln und derneuen kartographischen Perspektive entstanden system-unabhängige thermale Fassadenkarten, dieals Anregung, tum phd thesis, Denkanstöße und Ausblick auf temperaturbezogene Darstellungsformen im städtischenRaum und Grundlage für weitere Forschungsarbeit dienen sollen, tum phd thesis.
A useful application of Wireless GIS is the handling of natural disasters such as earthquakes. This thesis is dedicated to the construction and implementation of a post-quake rescue information system based on open source data and software programs. The emphasis is laid on the assessment of losses in the disaster area, tum phd thesis, estimation of collapsing buildings and trapped population, and efficient transmission of all the rescue-relevant information.
The realized workflow of using open source data and software programs to develop distributed geo-services for rescue purposes is independent of official data sources, tum phd thesis, therefore, flexible enough to react on emergency situations. Automatic map generalization serves to reduce the amount of data to speed up the mapping process or to ensure the legibility of small scale maps. This thesis deals with the task of automatic selection of road networks for the application of visualization and route planning in an embedded car navigation system.
Based on an intensive analysis of the embedded system in terms of storage capacity, the display screen and the necessary computing power in real time, two special constraints - connectivity and network density — are introduced. A concept for the semantic-driven path selection for the map display and the optimal route planning is developed and implemented with test data from Germany and China, tum phd thesis.
Determining a best route in highly developed complex transportation networks is not a trivial task, especially for those who are unfamiliar with the local transportation system. Multimodal route planning that aims to find an optimal route between the source and the target of a trip while utilizing several transportation modes is essential to intelligent multimodal navigation services.
Although the task originates from the field of transportation, it can be abstracted as a general tum phd thesis independent of the domain-specific details on the underlying data model and algorithms. This research work is therefore dedicated to a general approach of modeling the multimodal network data and performing tum phd thesis path queries on it, tum phd thesis.
The weighted digraph structure can well represent the fundamental static networks. For each mode, there is one corresponding mode graph. These graphs constitute the Multimodal Graph Set as a key component of the overall multimodal network data model. In comparison with the traditional mono-modal problem, another key component necessary in the modeling of multimodal route-planning problem is mode-switching actions. In this work, such actions are described by Switch Points which are somewhat analog to plugs and sockets between different mode graphs.
Consequently, it is possible to plug-and-play a Multimodal Graph Set by means of Switch Points. On the basis of the multimodal network data model, the multimodal route-planning problem is categorized into two types and formalized as the multimodal shortest path problem on the Plug-and-Play Multimodal Graph Set.
It turns out that the solutions for these two types of problem are equivalent if the input mode list for the first type is transformed into its matrix expression. When applying the general multimodal route-planning approach to a specific application domain, a rule-based inferring process is necessary to determine whether a mode sequence is reasonable or not. Performance evaluations on the integrated navigation dataset have verified the efficiency tum phd thesis the proposed approach.
Road traffic information has been one of the important elements for traffic information systems. The information can be found on the road where Variable Message Sign VMS and other tum phd thesis have been widely utilized for such application. These overwhelming majorities of traffic information sources provide real-time traffic information, aiming at helping drivers make better decisions on choosing a correct traffic route on the basis of current traffic state, tum phd thesis.
However, it is an unusual sight to view the full scenarios of the system with the view from the drivers themselves. Therefore, smartly presenting the information to the road user has a potential to support the road user to receive and interpret the information in a more effective way.
Traffic information presented in different styles may enhance the attractiveness of the information itself. Considering this, tum phd thesis, we design this study to find out whether there is a refined relationship between the specific presentation style and the driving behavior.
As a starting point, this study tested the assumption that the probe vehicle could provide reliable and sufficient amount of data that could represent travel time information which then can be transformed into various presentation style.
VISSIM 5, tum phd thesis. ArcGIS designed for use by transportation professionals to display the results of travel time provided by probe in a more understandable visual fashion color coded design. Later, user testing upon preference of the drivers towards different types of traffic information presentation style is conducted. A picture is often cited to be worth a thousands words and, for some tasks it is clear that a visual presentation such as map is dramatically easier to be used than other textual or spoken description, tum phd thesis.
Ludwig-Maximilians-Universität München (LMU) \u0026 Technical University of Munich (TUM) October 1, 2020
, time: 13:16Physics Department, TUM | Doctorate
Formalities. Please take note: These specifications apply for bachelor’s and master’s theses. You can find the regulations applying to the diploma thesis in the §§ of the ADPO (General Academic and Examination Regulations) and the FPSO (Departmental Study and Examination Regulations) of your degree program Apr 20, · Under the terms of the TUM Regulations for the Award of Doctoral Degrees you must make the authorized version of your doctoral thesis / dissertation available to the scholarly public by means of reproduction and dissemination. For this purpose you can publish your dissertation either in an electronic form or in paper version with ISBN Doctoral Thesis ("Dissertation") Having completed your research and the basic qualification program the doctoral examination process starts by submitting your doctoral thesis (see also FAQ about monograph vs. "cumulative"). The thesis has to be submitted to the examinations office of TUM. You need to apply for this by DocGS
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