Bibliografie VÚGTK
Using strain analysis to test positional precision of cartometric scanning
Antoš, Filip ; Böhm, Ondřej ; Talich, Milan ; Advances and Trends in Geodesy, Cartography and Geoinformatics II

Zdroj: Advances and Trends in Geodesy, Cartography and Geoinformatics II : s.203-210

Typ publikace: sbornikove prispevky
Rozsah: 8 stran

Odkaz: https://doi.org/10.1201/9780429327025
Anotace:
In 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.

Citace: ANTOŠ, Filip, Ondřej BÖHM a Milan TALICH. Using strain analysis to test positional precision of cartometric scanning. In: MOLČÍKOVÁ, Soňa. Advances and Trends in Geodesy, Cartography and Geoinformatics II [online]. Leiden, The Netherlands: CRC Press/ Balkema Taylor & Francis Group, 2020, s. 203-210. [cit. 2021-8-16].ISBN 9780429327025. Dostupné z: doi:10.1201/9780429327025

Záznam se nachází v těchto sbírkách:
Výsledky VÚGTK > Podle útvarů / oddělení > 23: Odvětvové informační středisko
Výsledky VÚGTK > Vědečtí pracovníci VÚGTK > Ing. Milan Talich, Ph.D.
Výsledky VÚGTK > Vědečtí pracovníci VÚGTK > Ing. Filip Antoš
Výsledky VÚGTK > Vědečtí pracovníci VÚGTK > Ing. Ondřej Böhm
Dokumentační centrum VÚGTK > Články VÚGTK
Výsledky VÚGTK > Výsledky RIV

 Záznam vytvořen 2021-08-16, poslední editace 2021-08-16


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