Spectral pattern classification in lidar data for rock identification in outcrops.
The present study aimed to develop and implement a method for detection and classification of spectral signatures in point clouds obtained from terrestrial laser scanner in order to identify the presence of different rocks in outcrops and to generate a digital outcrop model. To achieve this objective, a software based on cluster analysis was created, named K-Clouds. This software was developed through a partnership between UNISINOS and the company V3D. This tool was designed to begin with an analysis and interpretation of a histogram from a point cloud of the outcrop and subsequently indication of a number of classes provided by the user, to process the intensity return values. This classified information can then be interpreted by geologists, to provide a better understanding and identification from the existing rocks in the outcrop. Beyond the detection of different rocks, this work was able to detect small changes in the physical-chemical characteristics of the rocks, as they were caused by weathering or compositional changes.
VIZLab, Advanced Visualization Laboratory, UNISINOS, 93022-000 São Leopoldo, RS, Brazil.
Leonardo
L
Campos Inocencio
VIZLab, Advanced Visualization Laboratory, UNISINOS, 93022-000 São Leopoldo, RS, Brazil ; PPGEO, Graduate Program on Geology, UNISINOS, 93022-000 São Leopoldo, RS, Brazil.
Mauricio Roberto
MR
Veronez
VIZLab, Advanced Visualization Laboratory, UNISINOS, 93022-000 São Leopoldo, RS, Brazil.
Francisco Manoel
FM
Wohnrath Tognoli
VIZLab, Advanced Visualization Laboratory, UNISINOS, 93022-000 São Leopoldo, RS, Brazil.
Marcelo Kehl
MK
de Souza
VIZLab, Advanced Visualization Laboratory, UNISINOS, 93022-000 São Leopoldo, RS, Brazil.
Reginaldo Macedônio
RM
da Silva
PIPCA, Applied Computer Science Graduate Program, UNISINOS, 93022-000 São Leopoldo, RS, Brazil ; V3D, Studios & Ficta Mobile Technologies, 93022-000 São Leopoldo, RS, Brazil.
Luiz
L
Gonzaga
V3D, Studios & Ficta Mobile Technologies, 93022-000 São Leopoldo, RS, Brazil.
César Leonardo
CL
Blum Silveira
D001938:Brazil; D016000:Cluster Analysis; D007091:Image Processing, Computer-Assisted; D007834:Lasers; D008962:Models, Theoretical; D058998:Remote Sensing Technology; D012984:Software