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Photogrammetric Low Cost Systems for Flash-Flood Analysis groups/MOXXI/1... · 2020. 7. 1. ·...

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Geneve, 04.12.2017 Faculty of Environmental Sciences, Institute of Photogrammetry and Remote Sensing Photogrammetric Low Cost Systems for Flash-Flood Analysis Hannes Sardemann, Anette Eltner
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Page 1: Photogrammetric Low Cost Systems for Flash-Flood Analysis groups/MOXXI/1... · 2020. 7. 1. · Sardemann, Eltner: Low Cost 3D for Extreme Events Low cost camera-based gauging station

Geneve, 04.12.2017

Faculty of Environmental Sciences, Institute of Photogrammetry and Remote Sensing

Photogrammetric Low Cost Systems forFlash-Flood Analysis

Hannes Sardemann,

Anette Eltner

Page 2: Photogrammetric Low Cost Systems for Flash-Flood Analysis groups/MOXXI/1... · 2020. 7. 1. · Sardemann, Eltner: Low Cost 3D for Extreme Events Low cost camera-based gauging station

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Sardemann, Eltner: Low Cost 3D for Extreme Events

EXTRUSO

acquisition ofhydro-

morphologicaldata

informationsystem

acquisition of hydro-meteorological data

hydro-meteorolicaltime series

hydro-meteorological

modelling

UAV and UWV measurements

low-costcamera gauges

https://extruso.bu.tu-dresden.de/

Optical measurements ofhydrological parameters

Optical measurements ofmorphologicalparameters

Page 3: Photogrammetric Low Cost Systems for Flash-Flood Analysis groups/MOXXI/1... · 2020. 7. 1. · Sardemann, Eltner: Low Cost 3D for Extreme Events Low cost camera-based gauging station

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Sardemann, Eltner: Low Cost 3D for Extreme Events

Low cost camera-based gauging station

Automatic waterline detection

Projection from image into 3D model

Raspberry-Pi based camera case

M. Kröhnert, R. Meichsner (2017): Segmentation of environmental time lapse image sequences for the determination of shore lines captured by hend-held smartphone cameras

Page 4: Photogrammetric Low Cost Systems for Flash-Flood Analysis groups/MOXXI/1... · 2020. 7. 1. · Sardemann, Eltner: Low Cost 3D for Extreme Events Low cost camera-based gauging station

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Sardemann, Eltner: Low Cost 3D for Extreme Events

Image-based flow velocity measurement

0.75

0.35

(m/s)

0.76

0.48

(m/s)

detect feature points

track feature points (LSM)

filter tracks by appearances in images

filter tracks by direction and steadiness

Page 5: Photogrammetric Low Cost Systems for Flash-Flood Analysis groups/MOXXI/1... · 2020. 7. 1. · Sardemann, Eltner: Low Cost 3D for Extreme Events Low cost camera-based gauging station

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Sardemann, Eltner: Low Cost 3D for Extreme Events

Optical Measurement of morphological Parameters

Unmanned Water Vehicle (UWV) as multi-sensor platform

GPS/ IMU

LIDAR

360° camera

RGB and NIR cameras

Echosounder

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Sardemann, Eltner: Low Cost 3D for Extreme Events

3D-pointclouds of the river banks

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Sardemann, Eltner: Low Cost 3D for Extreme Events

River profile from single beam echosounder

Depth0.25 m 2.5 m 5 m

0 250 500 m

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Sardemann, Eltner: Low Cost 3D for Extreme Events

Thank you for your attention

https://extruso.bu.tu-dresden.de/

[email protected]

[email protected]


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