This page has only limited features, please log in for full access.
Gerhard Navratil is a surveyor by education and specialized on cadastral topics. He participated in several projects related to cadastral issues including a mapping project in Cyprus in 2001/02, the EU funded COST action G9 (Modelling Real Property Transactions) from 2001 to 2005 and the appear project EduLand2 with partners in Ethiopia from 2016 to 2020. Proper cadastral systems require “good” data. Thus, determination, description, and visualization of spatial data quality play an essential role in his research. Since cadastral systems include documentation of rights, he is also dealing with legal questions. He is a member of the FIG Working Group on 3D cadastres and is co-chairing the ISPRS WG IV/3 Spatial Data Analysis, Statistics and Uncertainty Modelling. Gerhard Navratil is also at the University of Applied Science Technikum Wien. This triggered his interest in research questions related to transportation like optimal routes based on weather forecast, spatial variation of fastest routes, or identifying possibilities to use public transportation for leisure activities.
Land administration is an essential part of public administration. Geographic Information Science (GIScience) deals with the concepts, principles, and models of geographic information. Land administration has always adopted new technological and scientific developments and thus it is reasonable to check, which results from GIScience can be used to improve land administration systems. This editorial paper introduces the key research areas for land administration. After that, 12 original papers are presented, which provide a general picture of recent trends in land administration research. This Special Issue shows that land administration as a scientific field is still evolving and adopting to the changing societal needs.
Gerhard Navratil. Applications of GIScience for Land Administration. ISPRS International Journal of Geo-Information 2020, 9, 416 .
AMA StyleGerhard Navratil. Applications of GIScience for Land Administration. ISPRS International Journal of Geo-Information. 2020; 9 (7):416.
Chicago/Turabian StyleGerhard Navratil. 2020. "Applications of GIScience for Land Administration." ISPRS International Journal of Geo-Information 9, no. 7: 416.
The paper focuses on approaches to the registration of real property rights in the case of underground or subway tunnels in different EU countries: Austria, Bulgaria, Czech Republic, Croatia, Greece, Poland, Slovenia, and Sweden. The authors conducted analysis on the registration of rights to subway tunnels in the chosen countries, including its effectiveness in ensuring appropriate property rights to construct and exploit tunnels. Special attention was given to limitations related to the lack of legal provisions vertically dividing space, i.e. into layers, and referring to the ownership right to the layers. Benefits which might be achieved by the introduction of a 3D real property subdivision were pointed out. The analysis of the available data concerning the geometry of subway tunnels in particular countries was presented. The authors tried to answer the question whether the accessible data concerning the geometry of subway tunnels allows to generate a 3D geospatial model of a constructed object, and to specify the space which should be determined as a 3D parcel in the 3D real property cadastre, for the purpose of registering property rights for the object (the tunnel).
Marcin Karabin; Dimitrios Kitsakis; Mila Koeva; Gerhard Navratil; Jesper M. Paasch; Jenny Paulsson; Nikola Vučić; Karel Janečka; Anka Lisec. Layer approach to ownership in 3D cadastre in the case of underground tunnels. Land Use Policy 2020, 98, 104464 .
AMA StyleMarcin Karabin, Dimitrios Kitsakis, Mila Koeva, Gerhard Navratil, Jesper M. Paasch, Jenny Paulsson, Nikola Vučić, Karel Janečka, Anka Lisec. Layer approach to ownership in 3D cadastre in the case of underground tunnels. Land Use Policy. 2020; 98 ():104464.
Chicago/Turabian StyleMarcin Karabin; Dimitrios Kitsakis; Mila Koeva; Gerhard Navratil; Jesper M. Paasch; Jenny Paulsson; Nikola Vučić; Karel Janečka; Anka Lisec. 2020. "Layer approach to ownership in 3D cadastre in the case of underground tunnels." Land Use Policy 98, no. : 104464.
The main aim of this paper is to document the gradual evolution of cadastral maps and associated land books in the area of today’s Austria as well as the more dramatic development of the cadastral system in Galicia (Poland). The continuous development of the Austrian system is compared to the more gradual evolution of the Polish system, the development of which was more complex because of the historical and political developments in this country’s turbulent past. However both systems have common roots with the Franciscan Cadastre. The investigation is based on development of the legal instruments, the institutional settings, the technical procedures, and the final products of the respected countries. The comparison of the development in the two countries and the results of the investigated quality assessment of cadastral maps clearly document that the smooth development of a cadastre requires a stable political situation. The Austrian cadastre had already almost finished the period of consolidation, harmonization, and completion in 1938. This allowed a new area of further development to evolve after 1945. In Poland, the unfinished tasks of homogenization and harmonization in 1939 and the significant changes in the political system in 1945 delayed consolidation, harmonization, and completion of the cadastral system and impeded the continuous development of the system for the next decades.
Józef Hernik; Barbara Prus; Robert Dixon-Gough; Jarosław Taszakowski; Gerhard Navratil; Reinfried Mansberger. The Evolution of Cadastral Systems in Austria and Galicia (Poland): Different Approaches to a Similar System from a Common Beginning. The Cartographic Journal 2020, 57, 97 -112.
AMA StyleJózef Hernik, Barbara Prus, Robert Dixon-Gough, Jarosław Taszakowski, Gerhard Navratil, Reinfried Mansberger. The Evolution of Cadastral Systems in Austria and Galicia (Poland): Different Approaches to a Similar System from a Common Beginning. The Cartographic Journal. 2020; 57 (2):97-112.
Chicago/Turabian StyleJózef Hernik; Barbara Prus; Robert Dixon-Gough; Jarosław Taszakowski; Gerhard Navratil; Reinfried Mansberger. 2020. "The Evolution of Cadastral Systems in Austria and Galicia (Poland): Different Approaches to a Similar System from a Common Beginning." The Cartographic Journal 57, no. 2: 97-112.
A basic problem in navigation is the selection of a suitable route. This requires a determination of costs or suitability. There are approaches for many standard situations, e.g., the shortest route for pedestrians, the fastest route for cars, a physically possible and legal route for trucks, or the safest route for bicycle riders. However, not much research has been done yet for motorcycle riders. Published approaches rely on interpretation of geometry, interviews, or user feedback. None of these approaches is precise and scalable. Since modern motorcycles have an increasing number of internal sensors (e.g., lean angle sensors for curve ABS), they could provide the data required for a classification of route segments. The combination with a navigational device allows to georeferenced the data and thus attach riding characteristics to a specific road segment. This work sketches the classification concept and presents data from a real-driving experiment using an external IMU.
Gerhard Navratil; Ioannis Giannopoulos; Gilbert Kotzbek. Classification of Urban and Rural Routes Based on Motorcycle Riding Behaviour. Lecture Notes in Geoinformation and Cartography 2019, 95 -108.
AMA StyleGerhard Navratil, Ioannis Giannopoulos, Gilbert Kotzbek. Classification of Urban and Rural Routes Based on Motorcycle Riding Behaviour. Lecture Notes in Geoinformation and Cartography. 2019; ():95-108.
Chicago/Turabian StyleGerhard Navratil; Ioannis Giannopoulos; Gilbert Kotzbek. 2019. "Classification of Urban and Rural Routes Based on Motorcycle Riding Behaviour." Lecture Notes in Geoinformation and Cartography , no. : 95-108.
Andrew U. Frank retired in October 2016 after a scientific career of 38 years with positions in Switzerland, Maine and Austria. One of the main applications that he constantly referred to and that he analysed in detail was land administration. This review article tries to give an overview of Frank’s work in the context of land administration and how he influenced the approach to land administration research. He organized his work mainly in four pillars: technical, legal, organizational and economical aspects. Each of them is discussed in the paper and the influence on international cooperation is shown.
Gerhard Navratil. Andrew U. Frank’s impact on research in land administration. International Journal of Geographical Information Science 2017, 32, 2501 -2513.
AMA StyleGerhard Navratil. Andrew U. Frank’s impact on research in land administration. International Journal of Geographical Information Science. 2017; 32 (12):2501-2513.
Chicago/Turabian StyleGerhard Navratil. 2017. "Andrew U. Frank’s impact on research in land administration." International Journal of Geographical Information Science 32, no. 12: 2501-2513.
A well-known problem of geographical information is the communication of the quality level. It can be either done verbally / numerically or it can be done graphically. The graphical form is especially useful if the quality has a spatial variation because the spatial distribution is visualized as well. The problem of spatial variation of quality is an issue for cadastral maps. Non-experts cannot determine the quality at a specific location. Therefore a visual representation was tested for the Austrian cadastre. A map sheet was redesigned to give some indication of cadastral quality and presented to both experts and non-experts. The paper presents the result of the interviews.
G. Navratil; V. Leopoldseder. VISUALIZING THE QUALITY OF VECTUR FEATURES – A PROPOSAL FOR CADASTRAL MAPS. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2017, XLII-2/W7, 537 -542.
AMA StyleG. Navratil, V. Leopoldseder. VISUALIZING THE QUALITY OF VECTUR FEATURES – A PROPOSAL FOR CADASTRAL MAPS. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. 2017; XLII-2/W7 ():537-542.
Chicago/Turabian StyleG. Navratil; V. Leopoldseder. 2017. "VISUALIZING THE QUALITY OF VECTUR FEATURES – A PROPOSAL FOR CADASTRAL MAPS." The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W7, no. : 537-542.
Gerhard Navratil; Eva-Maria Unger. Reprint of: Requirements of 3D cadastres for height systems. Computers, Environment and Urban Systems 2013, 40, 14 -23.
AMA StyleGerhard Navratil, Eva-Maria Unger. Reprint of: Requirements of 3D cadastres for height systems. Computers, Environment and Urban Systems. 2013; 40 ():14-23.
Chicago/Turabian StyleGerhard Navratil; Eva-Maria Unger. 2013. "Reprint of: Requirements of 3D cadastres for height systems." Computers, Environment and Urban Systems 40, no. : 14-23.
Weather has a significant influence on navigation processes. Driving during a heavy rain, for example, is slower and due to poor visibility more dangerous than driving in perfect weather conditions. Thus from time management and safety perspective including weather information is beneficial. Weather, especially rain may also be critical for transportation tasks since some commodities like straw or sand should not get wet. In the last years, the quality of weather information and weather forecast has improved and could be used to improve route planning.The paper discusses how weather information can be included in route planning algorithms. A first approximating algorithm to incorporate weather forecast data is presented. Some examples showing the impact on route planning conclude the paper.
Paul Litzinger; Gerhard Navratil; Åke Sivertun; Daniela Knorr. Using Weather Information to Improve Route Planning. Lecture Notes in Geoinformation and Cartography 2012, 199 -214.
AMA StylePaul Litzinger, Gerhard Navratil, Åke Sivertun, Daniela Knorr. Using Weather Information to Improve Route Planning. Lecture Notes in Geoinformation and Cartography. 2012; ():199-214.
Chicago/Turabian StylePaul Litzinger; Gerhard Navratil; Åke Sivertun; Daniela Knorr. 2012. "Using Weather Information to Improve Route Planning." Lecture Notes in Geoinformation and Cartography , no. : 199-214.
Gerhard Navratil. Adjustment computations: spatial data analysis. International Journal of Geographical Information Science 2011, 25, 326 -327.
AMA StyleGerhard Navratil. Adjustment computations: spatial data analysis. International Journal of Geographical Information Science. 2011; 25 (2):326-327.
Chicago/Turabian StyleGerhard Navratil. 2011. "Adjustment computations: spatial data analysis." International Journal of Geographical Information Science 25, no. 2: 326-327.
The article presents a conceptual framework for computations with imprecise values. Typically, the treatment of imprecise values differs from the treatment of precise values. While precise computations use a single number to characterize a value, computations with imprecise values must deal with several numbers for each value. This results in significant changes in the program code because values are represented, e.g., by expectation and standard deviation and both values must be considered within the computations. It would be desirable to have a solution where only limited changes in very specific places of the code are necessary. The mathematical concept of lifting may lead to such a solution.
Gerhard Navratil; Farid Karimipour; Andrew U. Frank. Lifting Imprecise Values. Lecture Notes in Geoinformation and Cartography 2008, 79 -94.
AMA StyleGerhard Navratil, Farid Karimipour, Andrew U. Frank. Lifting Imprecise Values. Lecture Notes in Geoinformation and Cartography. 2008; ():79-94.
Chicago/Turabian StyleGerhard Navratil; Farid Karimipour; Andrew U. Frank. 2008. "Lifting Imprecise Values." Lecture Notes in Geoinformation and Cartography , no. : 79-94.
Geospatial information systems (GIS) have been applied in modeling environmental and ecological systems. 3D Moving objects are spatiotemporal objects whose location and/or extent change over time, and they are among those recent evolutions that emerged to fulfill some of the new requirements for GI community. Many of the earlier works were based on the assumption that exact trajectory information was available (or could be obtained) at every time instant. Unfortunately, this assumption cannot be guaranteed in real applications where trajectory information is associated inherently with uncertainty and lack of complete and precise knowledge. In this paper, we explore how a trajectory is influenced by uncertainty. Then we study the nature of 3D moving object trajectories in the presence of uncertainty and we introduce two data models for uncertain trajectories that are used to represent moving objects. By using this model in a case study, we obtain the most probable answer where we consider a 3D moving object path under uncertain conditions and lack of knowledge.
T Shokri; M. R. Delavar; M. R. Malek; A. U. Frank; G. Navratil. 3D Modeling Moving Objects under Uncertainty Conditions. Lecture Notes in Geoinformation and Cartography 2007, 139 -149.
AMA StyleT Shokri, M. R. Delavar, M. R. Malek, A. U. Frank, G. Navratil. 3D Modeling Moving Objects under Uncertainty Conditions. Lecture Notes in Geoinformation and Cartography. 2007; ():139-149.
Chicago/Turabian StyleT Shokri; M. R. Delavar; M. R. Malek; A. U. Frank; G. Navratil. 2007. "3D Modeling Moving Objects under Uncertainty Conditions." Lecture Notes in Geoinformation and Cartography , no. : 139-149.
Virtual worlds, and especially the Internet, become increasingly important for advertisement, planning purposes, and simulation. Concepts that proved useful in the real world have been transferred to the Internet. A frequently seen example is the concept of navigation processes. In the real world such processes are based on the properties of space. A transfer to the virtual reality of the Internet is only useful if the properties of real space and virtual space are similar. In this paper we present different concepts of space and discuss their suitability for the Internet.
Elissavet Pontikakis; Gerhard Navratil. Physical vs. Web Space — Similarities and Differences. Progress in Spatial Data Handling 2006, 17 -26.
AMA StyleElissavet Pontikakis, Gerhard Navratil. Physical vs. Web Space — Similarities and Differences. Progress in Spatial Data Handling. 2006; ():17-26.
Chicago/Turabian StyleElissavet Pontikakis; Gerhard Navratil. 2006. "Physical vs. Web Space — Similarities and Differences." Progress in Spatial Data Handling , no. : 17-26.