AUTOMATED UPDATING OF SELECTED TECHNICAL AND CADASTRAL MAP COMPONENTS Jiří Bureš 1 , Dalibor Bartoněk 2 , Ladislav Bárta 3 , Otakar Švábenský 4 Affiliations: 1) Jiří Bureš, MSc., Ph.D., e-mail: bures.j@fce.vutbr.cz 2) Dalibor Bartoněk, Assoc. prof., CSc., e-mail: bartonek.d@fce.vutbr.cz 3) Ladislav Bárta, MSc., Ph.D., e-mail: barta.l@fce.vutbr.cz 4) Otakar Švábenský, prof., CSc., e-mail: svabensky.o@fce.vutbr.cz Brno University of Technology, Faculty of Civil Engineering; Veveří 331/95, 602 00 Brno, Czech Republic Abstract The paper presents an automated technology for updating selected elements of technical and cadastral maps. The main source of data is georeferenced laser scanning technology utilizing the Leica MS60 station with purpose-controlled, low-volume, scalable scanning. The evaluation technology is based on object-based filtering of laserscanned data using the current un-actualized form of technical or cadastral map. The supporting background for classification of objects can be also the orthophoto from a dron or aerial photogrammetry. Algorithmization based on edge detection is intended primarily for updating buildings, fenced plots, roadways, visible aboveground technical infrastructure and trees. Algorithmization based on the detection of digital terrain models is intended to update changes in landscaping and altimetry. The technology is based on the use of standard analytics tools in ArcGIS or QGIS with support of Python scripting language. Keywords: vector map updating, laser scanning, automation, algorithmization INTRODUCTION At the end of 2017 one of the most important tasks of the State Administration of Land Surveying and Cadastre was completed, namely digitization of cadastral maps in the Czech Republic. In total, the cadastral map was implemented in digital form in 12,954 cadastral territories, which is 99,0% of their total number. In the remaining 1% of the cadastral territories it was not possible for technical and legal reasons to create a digital form of the cadastral map and the situation is solved by the process of land consolidation in the territory or by new mapping. The aim of the digitization of cadastral maps was to achieve the compatibility of technical part of the cadastre of real estates with other spatially defined data, which will make the information system of the cadastre of real estate a more complex information system about the territory and will serve the broad needs of users from various fields. The basic long-term objective is further improvement of cadastral maps by the updating of the cadastral documentation by new mapping. Updating by new mapping will complement the renewal based on land consolidation results. Additionally, mapping will also be realized in locations where the cadastral map does not have the necessary accuracy because it was created by digitization of an analogue cadastral map or from earlier, less accurate measurements. One of the technologies for maintenance and updating of selected cadastral map objects is laser scanning technology. When using this technology, it generates a large amount of data (cloud) that ordinarily requires sophisticated hardware and software support during data evaluation. The article deals with the modified technology of collecting and evaluating the scanned data for refining the position of selected elements or detecting changes of buildings and other uniquely identifiable objects in digital cadastral maps or their erroneous display. The role, by its nature, belongs to the processing of large volumes of data that the authors dealt with in the project described in the publication [1]. RELATED WORKS Laser scanning is one of the advanced methods of data collection. However, there are relatively few publications dealing with the use of this technology in relation to the cadastre of real estate. The topic closest to this article is the study [2] in which the authors compare the methods of terrestrial surveying, photogrammetry and laser scanning for the acquisition of data for the real estate cadastre. Selected objects - buildings and structures were several times surveyed Proceedings, 7th International Conference on Cartography and GIS, 18-23 June 2018, Sozopol, Bulgaria ISSN: 1314-0604, Eds: Bandrova T., Konečný M. 888