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MACS-Mar: a real-time remote sensing system for maritime security applications

Brauchle, Jörg and Bayer, Steven and Hein, Daniel and Berger, Ralf and Pless, Sebastian (2018) MACS-Mar: a real-time remote sensing system for maritime security applications. CEAS Space Journal, pp. 1-10. Springer. doi: 10.1007/s12567-018-0207-7. ISBN 1868-2502. ISSN 1868-2502.

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Official URL: https://link.springer.com/article/10.1007/s12567-018-0207-7


The modular aerial camera system (MACS) is a development platform for optical remote sensing concepts, algorithms and special environments. For real-time services for maritime security (EMSec joint project), a new multi-sensor configuration MACS-Mar was realized. It consists of four co-aligned sensor heads in the visible RGB, near infrared (NIR, 700–950 nm), hyperspectral (HS, 450–900 nm) and thermal infrared (TIR, 7.5–14 µm) spectral range, a mid-cost navigation system, a processing unit and two data links. On-board image projection, cropping of redundant data and compression enable the instant generation of direct-georeferenced high-resolution image mosaics, automatic object detection, vectorization and annotation of floating objects on the water surface. The results were transmitted over a distance up to 50 km in real-time via narrow and broadband data links and were visualized in a maritime situation awareness system. For the automatic onboard detection of floating objects, a segmentation and classification workflow based on RGB, IR and TIR information was developed and tested. The completeness of the object detection in the experiment resulted in 95%, the correctness in 53%. Mostly, bright backwash of ships lead to an overestimation of the number of objects, further refinement using water homogeneity in the TIR, as implemented in the workflow, couldn’t be carried out due to problems with the TIR sensor, else distinctly better results could have been expected. The absolute positional accuracy of the projected real-time imagery resulted in 2 m without postprocessing of images or navigation data, the relative measurement accuracy of distances is in the range of the image resolution, which is about 12 cm for RGB imagery in the EMSec experiment.

Item URL in elib:https://elib.dlr.de/121263/
Document Type:Article
Title:MACS-Mar: a real-time remote sensing system for maritime security applications
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Brauchle, JörgJoerg.Brauchle (at) dlr.dehttps://orcid.org/0000-0002-3556-7643
Bayer, StevenSteven.Bayer (at) dlr.dehttps://orcid.org/0000-0002-4378-8075
Hein, Danieldaniel.hein (at) dlr.dehttps://orcid.org/0000-0001-9186-4178
Berger, Ralfralf.berger (at) dlr.dehttps://orcid.org/0000-0002-1314-5554
Pless, Sebastiansebastian.pless (at) dlr.dehttps://orcid.org/0000-0003-0251-9677
Date:25 April 2018
Journal or Publication Title:CEAS Space Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s12567-018-0207-7
Page Range:pp. 1-10
EditorsEmailEditor's ORCID iD
Series Name:CEAS Space Journal
Keywords:Maritime security, Automatic object extraction, Multi-sensor, MACS, Real-time, Aerial camera, Direct georeferencing
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Security Research and Applications
Deposited By: Brauchle, Jörg
Deposited On:22 Aug 2018 09:42
Last Modified:14 Dec 2019 04:28

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