000196335 001__ 196335
000196335 003__ CZ-ZdVUG
000196335 005__ 20210816125504.0
000196335 041__ $$aeng
000196335 040__ $$aABC039$$bcze
000196335 1001_ $$aAntoš, Filip
000196335 24510 $$aUsing strain analysis to test positional precision of cartometric scanning
000196335 300__ $$a8 stran
000196335 5203_ $$aIn the process of digitizing and publishing old maps, it should be kept in mind that maps created with geodetic or astronomical measurements have their own positioning accuracy. This accuracy is principally affected by an accuracy of measurement, applied cartographic projection, a map scale, used drawing method and so on. The map accuracy is important when we want to extract information about objects in maps and about their relationship. In most cases we want to know how precise the outputs are because it influences our next decisions. Digitization of maps and map atlases should be performed on special scanning devices. A large flatbed scanner is recommended for digitizing old maps because image distortion is minimal due to the scanner's design principles. In the paper, ScannTech cartometric scanner of Proserv company with optical resolution of 800 dpi and also described experi-ence with this large format scanner (A0+) is introduced. The necessary part of the article is devoted to testing its accuracy, which is characterized by the average position error (0.10 mm declared by the manufacturer). Mentioned are also reasons why old maps should not be digitized as documents or books are and why it is important to choose different ap-proach. Factors that have impact on a quality and the accuracy of digitized map are also listed. Major part of the article is given to methods for testing of an accuracy of scanners. It is proposed to use strain analysis to test the positional accuracy of cartometric scanning. The benefits of this new approach are discussed. Test sheets for doing tests are also presented. Results from long-term monitoring are also presented. These results describe behavior of scanners and show how a distortion of digital images (maps) is changing in a time.
000196335 655_4 $$asbornikove prispevky
000196335 7001_ $$aBöhm, Ondřej
000196335 7001_ $$aTalich, Milan
000196335 7112_ $$aAdvances and Trends in Geodesy, Cartography and Geoinformatics II$$cDemänovská Dolina, Low Tatras, Slovakia$$d10.09.2019
000196335 7730_ $$92020$$dLeiden, The Netherlands:CRC Press/Balkema Taylor & Francis Group,2020.$$gs.203-210$$tAdvances and Trends in Geodesy, Cartography and Geoinformatics II$$z978-0-367-34651-5
000196335 8564_ $$uhttps://doi.org/10.1201/9780429327025
000196335 85642 $$ahttps://www.isvavai.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F20%3AN0000036%21RIV21-MSM-00025615
000196335 910__ $$aABC039
000196335 980__ $$aclanky_vugtk
000196335 985__ $$aantos
000196335 985__ $$ariv
000196335 985__ $$autvar23
000196335 985__ $$abohm
000196335 985__ $$atalich