000193745 001__ 193745
000193745 003__ CZ-ZdVUG
000193745 005__ 20191128094146.0
000193745 041__ $$aeng
000193745 040__ $$aABC039$$bcze
000193745 1001_ $$aTalich, Milan
000193745 24510 $$aClassification of digitized old maps
000193745 300__ $$a6 stran
000193745 5203_ $$aBecause of their importance as historical sources, old maps are steadily becoming more interesting to researchers and public users. However, the users are no longer satisfied only by simple digitization and on-line publication. Users primarily require advanced web tools for more sophisticated work with old maps. This paper is concerned with classification of digitized old maps in form of raster images. An automatic classification of digital maps is useful tools. This process allows to automatically de-tect areas with common characteristic, i.e. forests, water surfaces, buildings etc. Technically it is a problem of assigning the image's pixels to one of several classes defined in advance. If the map is georeferenced the classified image can be used to determine the surface areas of the clas-sified regions, or otherwise evaluate their position. Unfortunately quite substantial difficulties can be expected when attempting to apply these tools. The main cause of these difficulties is varied quality of digitized maps resulting from damage caused to the original maps by time or storage conditions and from varying scanning procedures. Even individual maps from the same map series can differ quite a lot. The review of the main classification methods with special emphasis on the Bayesian meth-ods of classification is given. An example of this classification and its use is also given. Web application of raster image classification is introduced as well. The web application can classify both individual images and raster data provided via Web Map Services (WMS) with respect to OGC standards (Open Geospatial Consortium). After gathering the data, classification is applied to distinguish separate regions in the image. User can choose between several classification methods and adjust pertinent parameters. Furthermore, several subsequent basic analytical tools are offered. The classification results and registration parameters can be saved for further use.
000193745 6112_ $$a10th International Scientific and Professional Conference on Geodesy, Cartography and Geoinformatics$$cDEMÄNOVSKÁ DOLINA, LOW TATRAS, SLOVAKIA$$d10.10.2017
000193745 655_4 $$asborníkové příspěvky
000193745 7001_ $$aBöhm, Ondřej
000193745 7001_ $$aSoukup, Lubomír
000193745 7730_ $$92018$$dLeiden, The Netherlands:Taylor & Francis Group, London, UK,2018.$$gs.197-202$$tAdvances and Trends in Geodesy, Cartography and Geoinformatics$$z978-0-429-50564-5
000193745 8564_ $$uhttps://www.taylorfrancis.com/books/e/9780429505645/chapters/10.1201/9780429505645-32
000193745 85642 $$ahttps://www.rvvi.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F18%3AN0000021%21RIV19-MSM-00025615
000193745 910__ $$aABC039
000193745 980__ $$aclanky_vugtk
000193745 985__ $$atalich
000193745 985__ $$ariv
000193745 985__ $$autvar23
000193745 985__ $$abohm