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.

3D Reconstruction of Mining Area Based on Terrestrial Laser Scanner and Calculation of Extraction

2013 ◽  
Vol 325-326 ◽  
pp. 1787-1791 ◽  
Author(s):  
Hang Chen ◽  
Zhang Ying ◽  
Zhen Feng Shao ◽  
Zhi Qiang Du
Keyword(s):  
3D Reconstruction ◽  
Laser Scanning ◽  
3D Model ◽  
Laser Scanner ◽  
Terrestrial Laser Scanning ◽  
Mining Area ◽  
New Method ◽  
Terrestrial Laser Scanner ◽  
Surveying And Mapping

This paper analyzes the characteristics of terrestrial laser scanning technology and it's advantages of surveying and mapping application in mining area. Through the analysis of the specific topographical features of mining area, we design a new method in measurement based on the terrestrial laser scanning technology, and probe into the methods of 3D reconstruction and calculation of extraction. Experiments show that the proposed method can improve the efficiency of surveying and mapping in mining area , the 3D model can be used to monitor the extraction of mining area.

scholarly journals MULTISPECTRAL ANALYSIS OF INDIGENOUS ROCK ART USING TERRESTRIAL LASER SCANNING

2016 ◽  
Vol XLI-B5 ◽  
pp. 405-412 ◽  
Author(s):  
B. Skoog ◽  
P. Helmholz ◽  
D. Belton
Keyword(s):  
Classification Accuracy ◽  
Laser Scanning ◽  
Rock Art ◽  
Terrestrial Laser Scanning ◽  
Target Surface ◽  
Classification Algorithms ◽  
Heritage Preservation ◽  
Art Gallery ◽  
Different Types ◽  
Multispectral Analysis

Multispectral analysis is a widely used technique in the photogrammetric and remote sensing industry. The use of Terrestrial Laser Scanning (TLS) in combination with imagery is becoming increasingly common, with its applications spreading to a wider range of fields. Both systems benefit from being a non-contact technique that can be used to accurately capture data regarding the target surface. Although multispectral analysis is actively performed within the spatial sciences field, its extent of application within an archaeological context has been limited. This study effectively aims to apply the multispectral techniques commonly used, to a remote Indigenous site that contains an extensive gallery of aging rock art. The ultimate goal for this research is the development of a systematic procedure that could be applied to numerous similar sites for the purpose of heritage preservation and research. The study consisted of extensive data capture of the rock art gallery using two different TLS systems and a digital SLR camera. The data was combined into a common 2D reference frame that allowed for standard image processing to be applied. An unsupervised k-means classifier was applied to the multiband images to detect the different types of rock art present. The result was unsatisfactory as the subsequent classification accuracy was relatively low. The procedure and technique does however show potential and further testing with different classification algorithms could possibly improve the result significantly.

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 MULTISPECTRAL ANALYSIS OF INDIGENOUS ROCK ART USING TERRESTRIAL LASER SCANNING

2016 ◽  
Vol XLI-B5 ◽  
pp. 405-412
Author(s):  
B. Skoog ◽  
P. Helmholz ◽  
D. Belton
Keyword(s):  
Classification Accuracy ◽  
Laser Scanning ◽  
Rock Art ◽  
Terrestrial Laser Scanning ◽  
Target Surface ◽  
Classification Algorithms ◽  
Heritage Preservation ◽  
Art Gallery ◽  
Different Types ◽  
Multispectral Analysis

Multispectral analysis is a widely used technique in the photogrammetric and remote sensing industry. The use of Terrestrial Laser Scanning (TLS) in combination with imagery is becoming increasingly common, with its applications spreading to a wider range of fields. Both systems benefit from being a non-contact technique that can be used to accurately capture data regarding the target surface. Although multispectral analysis is actively performed within the spatial sciences field, its extent of application within an archaeological context has been limited. This study effectively aims to apply the multispectral techniques commonly used, to a remote Indigenous site that contains an extensive gallery of aging rock art. The ultimate goal for this research is the development of a systematic procedure that could be applied to numerous similar sites for the purpose of heritage preservation and research. The study consisted of extensive data capture of the rock art gallery using two different TLS systems and a digital SLR camera. The data was combined into a common 2D reference frame that allowed for standard image processing to be applied. An unsupervised k-means classifier was applied to the multiband images to detect the different types of rock art present. The result was unsatisfactory as the subsequent classification accuracy was relatively low. The procedure and technique does however show potential and further testing with different classification algorithms could possibly improve the result significantly.

Sign in / Sign up

Export Citation Format

Share Document