3-D Modelling in Rock Art Research

2017 ◽  
Author(s):  
Stéphane Jaillet ◽  
Jean-Jacques Delannoy ◽  
Julien Monney ◽  
Benjamin Sadier
Keyword(s):  
Spatial Analysis ◽  
High Resolution ◽  
Laser Scanning ◽  
Rock Art ◽  
Terrestrial Laser Scanning ◽  
Conservation Strategies ◽  
The World ◽  
Recent Developments ◽  
Art Research

Recent developments in 3-D technology have resulted in considerable improvements in the recording and study of rock art sites in various parts of the world. These technologies make it possible to digitally document sites at nested scales, from detailed analyses of individual motifs on rock surfaces to entire sites in their broader landscape settings. Because of the increased precision that 3-D recordings bring, the results can be used to study the art and site settings, and to monitor and guide conservation strategies. This chapter outlines key principles underlying the production of 3-D imagery and how high-resolution 3-D models can benefit the spatial analysis of sites and landscapes and the interrelationship of features therein. The authors focus on terrestrial laser scanning (TLS) and photogrammetry, distinctive approaches that are often applied together for a richer outcome.

scholarly journals Combined Use of Terrestrial Laser Scanning and UAV Photogrammetry in Mapping Alpine Terrain

2019 ◽  
Vol 11 (18) ◽  
pp. 2154 ◽  
Author(s):  
Ján Šašak ◽  
Michal Gallay ◽  
Ján Kaňuk ◽  
Jaroslav Hofierka ◽  
Jozef Minár
Keyword(s):  
High Resolution ◽  
Point Cloud ◽  
Laser Scanning ◽  
Terrestrial Laser Scanning ◽  
Point Clouds ◽  
Mutual Orientation ◽  
Close Range Photogrammetry ◽  
Combined Use ◽  
Wide Range ◽  
Close Range

Airborne and terrestrial laser scanning and close-range photogrammetry are frequently used for very high-resolution mapping of land surface. These techniques require a good strategy of mapping to provide full visibility of all areas otherwise the resulting data will contain areas with no data (data shadows). Especially, deglaciated rugged alpine terrain with abundant large boulders, vertical rock faces and polished roche-moutones surfaces complicated by poor accessibility for terrestrial mapping are still a challenge. In this paper, we present a novel methodological approach based on a combined use of terrestrial laser scanning (TLS) and close-range photogrammetry from an unmanned aerial vehicle (UAV) for generating a high-resolution point cloud and digital elevation model (DEM) of a complex alpine terrain. The approach is demonstrated using a small study area in the upper part of a deglaciated valley in the Tatry Mountains, Slovakia. The more accurate TLS point cloud was supplemented by the UAV point cloud in areas with insufficient TLS data coverage. The accuracy of the iterative closest point adjustment of the UAV and TLS point clouds was in the order of several centimeters but standard deviation of the mutual orientation of TLS scans was in the order of millimeters. The generated high-resolution DEM was compared to SRTM DEM, TanDEM-X and national DMR3 DEM products confirming an excellent applicability in a wide range of geomorphologic applications.

Large-Eddy Simulation of Inhomogeneous Canopy Flows Using High Resolution Terrestrial Laser Scanning Data

2011 ◽  
Vol 142 (2) ◽  
pp. 223-243 ◽  
Author(s):  
Fabian Schlegel ◽  
Jörg Stiller ◽  
Anne Bienert ◽  
Hans-Gerd Maas ◽  
Ronald Queck ◽  
...  
Keyword(s):  
High Resolution ◽  
Large Eddy Simulation ◽  
Laser Scanning ◽  
Terrestrial Laser Scanning ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Canopy Flows

scholarly journals Fusion of high resolution remote sensing images and terrestrial laser scanning for improved biomass estimation of maize

2014 ◽  
Vol XL-7 ◽  
pp. 101-108 ◽  
Author(s):  
C. Hütt ◽  
H. Schiedung ◽  
N. Tilly ◽  
G. Bareth
Keyword(s):  
High Resolution ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Terrestrial Laser Scanning ◽  
Point Clouds ◽  
Satellite System ◽  
Biomass Estimation ◽  
Digital Elevation ◽  
Elevation Model ◽  
In The Beginning

In this study, images from the satellite system WorldView-2 in combination with terrestrial laser scanning (TLS) over a maize field in Germany are investigated. Simultaneously to the measurements a biomass field campaigns was carried out. From the point clouds of the terrestrial laser scanning campaigns crop surface models (CSM) from each scanning date were calculate to model plant growth over time. These results were resampled to match the spatial resolution of the WorldView-2 images, which had to orthorectified using a high resolution digital elevation model and atmosphere corrected using the ATCOR Software package. A high direct correlation of the NDVI calculated from the WorldView-2 sensor and the dry biomass was found in the beginning of June. At the same date, the heights from laser scanning can also explain a certain amount of the biomass variation (<i>r</i><sup>2</sup> = 0.6). By combining the NDVI from WorldView-2 and the height from the laser scanner with a linear model, the R2 reaches higher values of 0.86. To further understand the relationship between CSM derived crop heights and reflection indices, a comparison on a pixel basis was performed. Interestingly, the correlation of the NDVI and the crop height is rather low at the beginning of June (<i>r</i><sup>2</sup> = 0,4, <i>n</i> = 1857) and increases significantly (<i>R</i><sup>2</sup> = 0,79, <i>N</i> = 1857) at a later stage.

Rock Art in Central and South America

2017 ◽  
Author(s):  
Andrés Troncoso ◽  
Felipe Armstrong ◽  
Mara Basile
Keyword(s):  
South America ◽  
Social Complexity ◽  
Rock Art ◽  
Spatial Features ◽  
Wide Range ◽  
The World ◽  
History Of ◽  
Art Research

Central and South America is a vast region, where a wide range of different societies established, transformed, disappeared, and endured. This kaleidoscope of peoples offers a particularly rich and diverse body of rock art in terms of its historical, technical, visual, and spatial features. The first sections of this chapter briefly introduces the reader to this diversity, as well as to the history of rock art research, presenting and discussing the different theoretical and methodological frameworks used. The authors discuss the role that rock art played—and still plays—for different groups, which they have grouped in terms of their common socioeconomic strategies. The authors argue that rock art research from this region can contribute to the wider understanding of rock art in the world, offering its materialistic and archaeological approaches ranging from the study of social complexity, the domestication of animals, mobility, and memory.

scholarly journals Surveying and High-Resolution Topography of the Ochtiná Aragonite Cave Based on TLS and Digital Photogrammetry

2020 ◽  
Vol 10 (13) ◽  
pp. 4633 ◽  
Author(s):  
Katarína Pukanská ◽  
Karol Bartoš ◽  
Pavel Bella ◽  
Juraj Gašinec ◽  
Peter Blistan ◽  
...  
Keyword(s):  
High Resolution ◽  
Laser Scanning ◽  
Terrestrial Laser Scanning ◽  
Small Scale ◽  
Digital Photogrammetry ◽  
Peripheral Surface ◽  
High Resolution Models ◽  
Flat Solution ◽  
Innovation Platform ◽  
Very High

The Ochtiná Aragonite Cave (Slovakia, Central Europe) is a world-famous karst phenomenon of significant geological, geomorphological, and mineralogical values. Its specific origin is determined by particular lithological and hydrogeological conditions of the Ochtiná karst formed in lenses of Paleozoic crystalline limestones, partly metasomatically altered to ankerite and siderite. Although the cave is only 300 m long, it represents a combined labyrinth consisting in parallel tectonically controlled halls and passages, that are largely interconnected through transverse conduits of phreatic and epiphreatic morphology with many medium- and small-scale forms originated in slowly moving or standing water (flat solution ceilings, wall inward-inclined facets, water table notches, convectional cupolas, and spongework-like hollows). The highly dissected and irregular morphologies of the cave were surveyed with terrestrial laser scanning and digital photogrammetry. Both used surveying technologies proved to be suitable for quick and accurate mapping of the complicated cave pattern. While terrestrial laser scanning can provide a rapid survey of larger and more complex areas with results delivered directly in the field, digital photogrammetry is able to generate very high-resolution models with quality photo-texture for mapping of small-scale morphologies. Several data on cave morphometry were generated from terrestrial laser scanning (e.g., the area of cave ground plan, the peripheral surface of underground spaces, and their volume). The new detailed map, sections, and 3D model create an innovation platform for a more detailed study on the morphology and genesis of this unusual cave also for its environmental protection and use in tourism.

scholarly journals Intensity Values of Terrestrial Laser Scans Reveal Hidden Black Rock Art Pigment

2021 ◽  
Vol 13 (7) ◽  
pp. 1357
Author(s):  
Andrea Jalandoni ◽  
W. Ross Winans ◽  
Mark D. Willis
Keyword(s):  
Southeast Asia ◽  
Laser Scanning ◽  
Rock Art ◽  
Terrestrial Laser Scanning ◽  
New Method ◽  
Black Pigment

The intensity values of terrestrial laser scanning (TLS) can be used to reveal painted black rock art behind graffiti and moss. The effect was observed in Gumahon cave in Peñablanca, Philippines where previously unnoticed black pigment was exposed underneath moss, red and white painted graffiti, and etched name graffiti. The application of TLS intensity values for this purpose has not, to our knowledge, been previously reported. The significance of this finding is that archaeologists are provided a new method of detecting obfuscated rock art that can aid interpretation. The method can be applied in similar contexts as black painted rock art is common in limestone caves across Southeast Asia and Micronesia, but also ubiquitous globally.

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