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Spatial Data Sharing and Implications: An Example from the Map Department of General Directorate of Land Registry and Cadastre, Türkiye

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Spatial Data Sharing and Implications: An Example from the Map Department of General Directorate of Land Registry and Cadastre, Türkiye
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156
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CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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Abstract
In our country, coordination among public institutions for the Turkey's National Geographic Information System (NSDI) (Türkiye Ulusal Coğrafi Bilgi Sistemi - TUCBS) and its infrastructure, the establishment of goals and strategies, the generation and maintenance of geographic data within the thematic areas of geographic information, and ensuring its currency, management, use, access, security, sharing, and distribution are determined by the procedures, principles, and standards to be developed with the Presidential Decree No. 49. This proposal covers the project for coordinating Standard Topographic Maps produced by the Map Department of General Directorate of Land Registry and Cadastre, highlighting significant developments in map management processes and the successes of the project, along with the detailed use of open-source software. The Department, through its photogrammetric base map production at a 1/5000 scale since 1955, examines efforts to digitize a 480,000 km² dataset. The characteristics of raster data, focusing on deformation, distortion, and quality issues in scanned data at different resolutions, are investigated to assess their suitability for automation. The testing conducted within the project includes the coordination processes using QGIS on the Ankara 1/250,000 sheet, emphasizing the contribution of open-source software to the project. The flexibility and community-driven development of open-source software have facilitated more effective project management and customization of the software. Test results indicate the successful coordination of 1,967 raster sheets and demonstrate the feasibility of more extensive testing through remote working methods. The proposal also dives into institutional requirements related to 1/5000 sheet demands, such as registry needs, storage requirements, usage through the Metadata GeoPortal (Harita Bilgi Bankası - HBB), and web presentation. The management of open-source GeoTiff files used in the presentation with GeoServer is particularly emphasized, illustrating how storage needs change during the presentation. The use of open-source software is highlighted for its cost-effectiveness, sustainability, and increased access to a broad user base, proposing a model for the widespread adoption of this approach in similar projects. In conclusion, this work emphasizes improvements in the map management processes of the General Directorate of Land Registry and Cadastre and the successes achieved in the coordination of Standard Topographic Maps, advocating for the adoption of this open-source approach in comparable projects.
Keywords
127
Streaming mediaMaschinelles Grundbuch
InformationStandard deviationData managementSystem programmingWindows RegistryScale (map)Raster graphicsDistortion (mathematics)Characteristic polynomialData storage devicePresentation of a groupSource codeMetadataTotal S.A.Presentation of a groupSource codeArithmetic progressionPairwise comparisonProjective planeSound effectMappingLevel (video gaming)Data managementMetadataScaling (geometry)QuantumOpen sourceEvent horizonDigitizingSlide ruleFlow separationWeb 2.0Shared memoryServer (computing)Digital rights managementBitInformationSoftwareCoordinate systemSquare numberWeb serviceProduct (business)PlanningDistortion (mathematics)Medical imagingDigital photographyRaster graphicsCharacteristic polynomialSoftware maintenanceSimilarity (geometry)Representation (politics)Lecture/ConferenceComputer animation
Least squaresComputer-assisted translationComputer animation
Transcript: English(auto-generated)
Hello, I'm Saade from Turkey and so I'm working as an engineer at General Directorate of Land Registry and Cadastre so it's gonna be my first ever talk in FOSS event so I am a bit of excited so please pardon me. So I would like to talk about the project like briefly talk about the project that we
will develop or we are developing so firstly Turkey's national geographical information system is known as TU CBS aims to coordinate geographical information infrastructure among public institutions so it's just like established by a presentable degree and in
starting with 2011 so Directorate of General, General Directorate of Geographical Information System has handed over this mission to like maintain data and sharing and the project overview is just coordinating standard topographical maps
produced by map department of our institution so we have our own plane tool like creating orthophotos and aerial images started in 1955 so it involves photogrammetric
base map production at you know 5,000 scale covering 480,000 kilometers square and so like when we create raster data so we have some challenges so raster data presents issues such as deformation, distortion and varying quality accessing these characteristics
is crucial for automation and ensuring data accuracy so we were using Quantum.js to utilize this raster data and like coordination processes particularly on Ankara sheet
also like open source software offers flexibility and community driven support for us like to enhance project management and customization so we have successfully coordinated 1967 raster sheets demonstrating the effectiveness of the open source tools
so work is underway to publish a total of 82,000 data via web service using GeoServer the process of publishing old data has been completed and the process of publishing current data is in progress so we have also all the requirements when it comes to like
shared data and managed data so we are sharing our data using our GeoPortal that we had developed beforehand so called metadata GeoPortal so we are just making a representation of those kind of data using GeoServer again like using GeoTIFF so in the this slide so you are able to
see our web portal called Metadata. So when we use the open source approach so it just shows us it's a cost effective sustainable and accessible to broad user base and
so proposes a model for widespread adoption of this approach in a similar project so conclusions or improvements in map management process highlight the project success so like advocate for the adoption of the open source approach in the comparable project so
also like it's important step towards the digitalization of the public institutions so and thanks for listening thank you thank you