Naslov
Sub-Millimeter 3D Documentation of Dinosaur Footprints Using the Handheld Surface Scanners (DF) - Case Study Istria (Croatia)

Autori
Panđa, Lovre ; Domazetović, Fran ; Marić, Ivan ; Milošević, Rina ; Deklić, Andrea

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
8th International Scientific Conference GEOBALCANICA 2022. / - , 2022

Skup
8th International Scientific Conference GEOBALCANICA 2022.

Mjesto i datum
Beograd, Srbija; online, 09.05.2022. - 10.05.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
3D Documentation ; dinosaur footprints ; handheld 3D surface scanners ; Istria

Sažetak
Footprints can be defined as distortions or depressions on the sediment surface that can provide functional, anatomical, and behavioral data about specific trackmaker biology. Until recently, dinosaur footprints (DFs) were regarded as paleontological oddities with a minimal scientific value. However, many sites with DFs have proven to be rich in various paleoecological, paleoenvironmental, and behavioral data. Existing dinosaur footprints are highly endangered by rapid urbanization and intensive tourism, as well as climate change-driven processes. In order to accurately and reliably derive morphometrical data which can help paleoichnologists in testing different hypotheses about dinosaur walking dynamics, it is necessary to reproduce and document various DFs in a satisfactory manner. Until recently, reproduction and documentation of the DF were done using casts made from various materials and drawings. However, these methods have numerous drawbacks (simplification, the interpretative impact of the drawing, the absence of accurate morphometry). In recent years the development of the various geospatial sensors has accelerated the 3D documentation process and facilitated the promotion of natural and cultural heritage. Respectively, 3D documentation of DFs today can be done using long-range and short-range active sensors, close-range photogrammetry, and an integrated approach. In this paper, a reliable methodological framework was proposed for high- resolution 3D reconstruction of endangered DFs using the hand-held 3D surface scanners (Artec Eva and Artec Space Spider). 3D documentation was done within two separate sites in Istria (Republic of Croatia). The first site was within the active dolomite quarry, where handheld scanners were applied for scanning of a Sauropod footprints endangered by nearby ongoing excavations. The second site was within the tourist resort where 3D documentation of Theropod footprints was done. These footprints are daily endangered by the tourists. The collected data was processed in Artec Studio Professional 15. Final editing and visualization were performed in Cloud Compare and Blender. Sub-millimeter resolution digital elevation models (DEMs) and digital orthophoto images (DOPs) of several DFs were created, which served as the basis for detailed analysis of morphometric characteristics and preservation of the current state of documented footprints. Detailed 3D models that were created are intended solely for educational and promotional purposes. These detailed data can allow ichnologists to detect small-scale anatomical details, measure different parameters of tracks, and reconstruct weight distribution on the different parts of the dinosaur foot. This methodology can improve the preservation of DFs and accelerate communication between scientists and other stakeholders or users.

Izvorni jezik
Engleski

Znanstvena područja
Interdisciplinarne prirodne znanosti, Geografija

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