VOMs & DOMs in Structural Geology

Dr. Bianca Wagner

Universität Göttingen

3. Arbeitstreffen zu “3D-Geländemethoden in den Geowissenschaften”

LIDAR “ATLS”

VIS “RGB”

NIR SWIR TIR

LIDAR “TLS”

VIS “RGB”

NIR/ SWIR

TIR

passive

active

reflective

emissive

Sensors

x, y, z, R, G, B, i(NIR), NIR(λ), SWIR(λ), TIR(λ) tx

tx-1

tx+1 x, y, z, R, G, B, i(NIR), NIR(λ), SWIR(λ), TIR(λ)

x, y, z, R, G, B

x

point cloud

point cloud (normals)

mesh textured mesh

DEM ortho- image

+ z

Data acquistion

Data dimensions

Data types

Methodological workflows

Documentation

Visualization

Semi-automatic feature extraction

Spectral analysis

Manual structural analysis

“Point picking” points

lines planes

faults

folds

bedding fractures

schistosity

RGB

Intensity

multispectral

hyperspectral

rock type

alteration zones

weathering

points

lines planes edges roughness

outcrop geometry

additional data

database

comparability

AR VR Animation Virtual

landscapes Teaching

Thematical workflows

Active deformation

?

Fault analysis

Fracture network

extraction

Fold analysis

Fault analysis

Extr

acti

on

Reco

nstr

ucti

on

+ field data

points lines

points lines (planes)

points lines (planes)

points, lines surfaces

bedding fault plane

generalized

thickness variations

thickness

detailed

fault orientation fault type fault displacement slip sense

fault surface characterisation

generalized detailed

Extr

acti

on

Reco

nstr

ucti

on

Fold analysis

+ field data

points lines

points lines (planes)

points lines (planes)

points, lines surfaces

bedding fold axis

generalized

thickness variations

thickness

detailed

fold orientation fold type

fold surface characterisation

generalized detailed

Fracture network extraction

point cloud

point cloud (normals)

mesh textured mesh

DEM ortho- image

+ z

Data sources Starting points

on the plane or at the edges

sharp to smooth edges

irregular shape

any orientation

various amounts of small-scale roughness

large-scale undulations

Preprocessing

smoothing noise removal decimating or nothing

Useful workflows

Input data

Result/ Product

Algorithms Software Data types File formats

Correction Normalization Georeferencing Reduction

Preprocessing Data analysis

Data storage

Documentation

Visualization

Distribution