Publikacje

Abstract:

The aim of geological field mapping is to collect and interpret on the relief of the Earth's surface. From thus created geological maps, we can obtain information about mineral units and their structure - rock and mineral types, their thickness, lithological deposits, faults, folds, fractures, and thus interpret information as they originated over time. However, the accessibility of such structures is affected by various morphological elements notches, watercourses, but also by vegetation. Simultaneo geodetic and geological mapping could be a solution for surveying hardly accessible morphological structures. Non technologies - terrestrial laser scanning (TLS) and close photogrammetry (terrestrial and remotely piloted aircraft (RPAS) photogrammetry) provide reliable, high accurate data on the topographic surface with a high temporal resolution, as the spatial accuracy of the measured point can be = 10 mm at an imaging distance of about 20 measured data, it is possible to generate point clouds, digital terrain models, and orthophoto maps based on automated data processing. However, the disadvantage of photogrammetric imaging is a proportional decrease in accuracy with increasing imaging di The accuracy of TLS is not significantly affected by increasing distance. The paper presents a case study of the use and comparison of non-contact surveying technologies and their application for in situ mapping of hardly accessible geological stru of Spišská Magura (Slovak-Polish border). The results are given for two localities on two outcrops - Jurgów (PL) and Bachledova valley (SK), while analyzing the usability of TLS and photogrammetry, with and without the use of artifi control points (GCP). The paper presents a mutual comparison of all obtained graphical outputs in terms of 1D and 2D quality depending on the type of GCPs used, depending on the terrain and accessibility. The results show that by using photogra creating map data, in comparison with TLS, we are able to get sufficient accuracy of outputs for in-situ geological mapping.

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Hardly Accessible Morphological Structures-Geological Mapping and Accuracy Analysis of SfM and TLS Surveying Technologies