Staff

Dr. Kevin Köser

Forschungsbereich 2:
FE Marine Geosystems

Office:
Room: 8A-210
Phone: +49 431 600-2566
Email: kkoeser@geomar.de

Address:
Wischhofstraße 1-3
D-24148 Kiel

 

     

News:

 

 

 

Research Interests

Kevin Köser is a senior researcher at the GEOMAR Helmholtz Centre for Ocean Research, Kiel. His main research interest lies in novel, automated, camera-based measurement techniques for (deep) sea environments and processes (3D underwater machine vision). These help to explore, map and monitor (deep) sea habitats, to study resources, or to assess hazards.  This involves understanding and modeling the underwater imaging process and designing, adjusting and calibrating camera systems as well as models on how certain quantities can be observed. Based on these insights, novel, automated visual measurement techniques (inspired by human vision abilities with respect to distances, sizes, semantics) are sought that allow to quantify and measure different environments in 2D, 3D or 4D. Here, 3D mapping and reconstruction from deep sea photos is one of the big challenges.

In the past years Dr. Köser has taught the classes 3D Photography and Computer Vision Lab at the Swiss Federal Institute of Technology (ETH Zurich) and has worked as a senior researcher in ETH's Computer Vision and Geometry Lab on shape and motion extraction from photos and videos, camera (auto-) calibration as well as geolocalization and image registration.

 

Services for the Community

He is a program committee member for the major international computer vision conferences such as ECCV, ICCV, CVPR, ... and serves as a reviewer for several journals in machine vision and photogrammetry. His research has been awarded several prizes, such as a Prof. Petersen Prize (VDI/VDE/PWP Foundation), a dissertation award (University of Kiel) and the DAGM 2011 Main Prize (German Association for Pattern Recognition).

 

Student Opportunities

In the context of 3D underwater computer vision (automatic image- and video-based quantification, classification, 3D reconstruction, mapping, ...) there are open positions for computer science master students for a thesis and opportunities for student jobs at GEOMAR.We build sensor platforms and devise and program automated approaches for visual and acoustic processing, which are then applied both in shallow water (e.g. -40m in the North Sea) as well as in the deep sea (e.g. -5000m in the Pacific Ocean), and for some spots nobody has ever been there before.

Possible tasks and topics include C++ and/or Matlab programming with respect to robust estimation, efficient large scale numerics, GPU computation, 3D and 4D geometry, image processing, underwater navigation and geodata processing, robotics, helping with constructing sensor systems for deep sea deployment consisting of cameras and/or sonar, small computers, storage devices and other sensors or actuators.

 

             

 


AUV cam-test (Lake Constance)


3d mesh of black smoker


Rising bubbles


AUV mapping DEA (-4300m)



ROV cam calib. (Atlantic, -1100m)

 

 

Selected Publications

For a more exhaustive list, see google scholar or the complete list of publications.
 

Underwater Vision

Anne Jordt, Kevin Köser, Reinhard Koch:
Refractive 3D reconstruction on underwater images
Methods in Oceanography, Volumes 15–16, April–July 2016, Pages 90-113, ISSN 2211-1220, dx.doi.org/10.1016/j.mio.2016.03.001

T. Kwasnitschka, K.Köser, J.Sticklus, M.Rothenbeck, T.Weiß, E.Wenzlaff, T.Schoening, L. Triebe, A. Steinführer, C.Devey, J.Greinert:
DeepSurveyCam: A deep ocean optical survey system
Sensors 2016, 16(2), 164; doi:10.3390/s16020164

Durden, Jennifer M., Schoening, Timm, Althaus, Franziska, Friedman, Ariell, Garcia, Rafael, Glover, Adrian G., Greinert, Jens, Jacobsen Stout, Nancy, Jones, Daniel O.B., Jordt, Anne, Kaeli, Jeffrey, Köser, Kevin, Kuhnz, Linda A., Lindsay, Dhugal, Morris, Kirsty J., Nattkemper, Tim W., Osterloff, Jonas, Ruhl, Henry A., Singh, Hanumant, Tran, Maggie and Bett, Brian J.:
Perspectives in visual imaging for marine biology and ecology: from acquisition to understanding.
In, Hughes, R.N., Hughes, D.J., Smith, I.P. and Dale, A.C. (eds.) Oceanography and Marine Biology: An Annual Review, Vol. 54. Boca Raton, US, CRC Press, 1-72

A.Jordt, C.Zelenka, J. Schneider v. Deimling, R.Koch, K.Köser:
The Bubble Box: Towards an Automated Visual Sensor for 3D Analysis and Characterization of Marine Gas Release Sites
Sensors 2015, 15(12), 30716-30735;
doi:10.3390/s151229825

Anne Sedlazeck, Kevin Koeser, and Reinhard Koch Supporting Underwater Archaeology by 3D Reconstruction from Underwater Images. Skyllis Journal of Underwater Archaeology, vol. 10 (2), 2010

ISSN 1436-3372

Anne Sedlazeck, Kevin Koeser and Reinhard Koch 3D Reconstruction Based on Underwater Video from ROV Kiel 6000 Considering Underwater Imaging Conditions. IEEE OCEANS Conference 2009, Bremen, Germany, 2009
DOI 10.1109/OCEANSE.2009.5278305

 


Camera Calibration and Self-Calibration

B. Li, L. Heng, K. Köser, M. Pollefeys: A Multiple-Camera System Calibration Toolbox Using a Feature Descriptor-Based Calibration Pattern. IEEE/RSJ Int. Conf. on Intelligent Robots and Systems (IROS), 2013.
DOI: 10.1109/IROS.2013.6696517

 

J. Brito, R. Angst, K. Köser, M. Pollefeys: Radial Distortion Self-Calibration. IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2013,
DOI 10.1109/CVPR.2013.180

J. Brito, R.Angst, K.Köser,C. Zach, P.Branco, M. Ferreira, M. Pollefeys: Unknown Radial Distortion Centers in Multiple View Geometry Problems. Asian Conference of Computer Vision (ACCV 2012), Daejeon, Korea, pp.136-149
DOI 10.1007/978-3-642-37447-0_11

 

Kevin Koeser, Christian Beder and Reinhard Koch : Conjugate Rotation: Parameterization and Estimation from an Affine Feature Correspondence. IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2008). Anchorage, June 2008
DOI 10.1109/CVPR.2008.4587796

 

 

3D Registration and 3D Feature Representation

B. Zeisl, K. Köser, M. Pollefeys: Automatic Registration of RGB-D Scans via Salient Directions. Computer Vision (ICCV), 2013 International Conference on, pp.2808-2815, 1-8 Dec. 2013,
DOI: 10.1109/ICCV.2013.349

 

B. Zeisl, K.Köser, M.Pollefeys: Viewpoint Invariant Matching via Developable Surfaces. European Conference on Computer Vision 2012, WS on Consumer Depth Cameras, Florence, Italy, 2012 Lecture Notes in Computer Science Volume 7584, pp 62-71
DOI 10.1007/978-3-642-33868-7_7

 

G. Baatz, O. Saurer, K. Köser, M. Pollefeys Leveraging Topographic Maps for Image to Terrain Alignment. Joint 3DIM/3DPVT Conference: 3D Imaging, Modeling, Processing, Visualization & Transmission (3DIMPVT 2012), Zurich, 2012
DOI 10.1109/3DIMPVT.2012.33

Kevin Koeser and Reinhard Koch Exploiting Uncertainty Propagation in Gradient-Based Image Registration. British Machine Vision Conference (BMVC 2008) Leeds, UK, 2008 BibTeX
DOI 10.5244/C.22.9

Kevin Koeser and Reinhard Koch: Perspectively Invariant Normal Features. Proceedings of IEEE 11th International Conference on Computer Vision 2007 (3D Representation for Recognition Workshop), Rio de Janeiro, Brazil, 14-21 Oct. 2007
DOI 10.1109/ICCV.2007.4408837

Kevin Koeser, Christian Perwass and Gerald Sommer: Dense Optic Flow with a Bayesian Occlusion Model. LNCS 3667 (Spatial Coherence in Visual Motion Analysis), pp. 127-139, Springer Verlag, Berlin, Heidelberg, 2006
DOI 10.1007/11676959_11

 

 

Stereo, 3D Reconstruction, Structure from Motion / SLAM

O. Saurer, K. Köser, J.-Y. Bouguet, M. Pollefeys: Rolling Shutter Stereo. Computer Vision (ICCV), 2013 International Conference on, pp.465-472, 1-8 Dec. 2013,
DOI: 10.1109/ICCV.2013.64

 

B.Jacquet, C. Häne, K.Köser, M.Pollefeys: Normal Map Capture for Nearly Flat Reflective Surfaces. Computer Vision (ICCV), 2013 International Conference on, pp.713-720, 1-8 Dec. 2013,
DOI: 10.1109/ICCV.2013.94

 

K. Köser, C. Zach, M. Pollefeys Dense 3D Reconstruction of Symmetric Scenes From a Single Image. Lecture Notes in Computer Science 6835 (DAGM 2011), Springer Verlag
DOI 10.1007/978-3-642-23123-0_27

Bogumil Bartczak, Kevin Koeser, Felix Woelk and Reinhard Koch: Extraction of 3D Freeform Surfaces as Visual Landmarks for Real-Time Tracking. Journal of Real-time Image Processing 2007(2):81-101, Springer-Verlag, Berlin, Heidelberg The original publication is available at springerlink.com.
DOI 10.1007/s11554-007-0042-0

 

Space Resection / Camera Tracking / Pose Estimation

Kevin Koeser and Reinhard Koch Differential Spatial Resection - Pose Estimation Using a Single Local Image Feature. European Conference on Computer Vision (ECCV 2008) Marseille, France, 2008 BibTex Poster The original publication is available at springerlink.com.
DOI 10.1007/978-3-540-88693-8_23

Kevin Koeser, Christian Beder and Reinhard Koch : Conjugate Rotation: Parameterization and Estimation from an Affine Feature Correspondence. IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2008). Anchorage, June 2008
DOI 10.1109/CVPR.2008.4587796

Kevin Koeser, Bogumil Bartczak and Reinhard Koch: Robust GPU-Assisted Camera Tracking using Free-form Surface Models. Journal of Real-time Image Processing 2007(2):133-147, Springer-Verlag, Berlin, Heidelberg BibTeX The original publication is available at springerlink.com.
DOI 10.1007/s11554-007-0039-8

Kevin Koeser, Bogumil Bartczak and Reinhard Koch: An Analysis-by-Synthesis Camera Tracking Approach based on Free-form Surfaces. Lecture Notes in Computer Science 4713 (DAGM 2007), pp. 122–131, Heidelberg, 2007
DOI 10.1007/978-3-540-74936-3_13

G. Thomas, J. Chandaria, B. Bartczak, K. Koeser, R. Koch, M. Becker, G. Bleser, D. Stricker, C. Wohlleber, M. Felsberg, F. Gustafsson, J. D. Hol, T. B. Schön, J. Skoglund, P. J. Slycke, S. Smeitz: Realtime Camera Tracking in the MATRIS Project. Motion Imaging Journal 2007, vol. 116, no. 7-8, p. 266-271, Society of the Motion Picture and Television Engineers, London, 2007
DOI 10.5594/J11426

 

Kevin Koeser, Bogumil Bartczak and Reinhard Koch: Drift-free Pose Estimation with Hemispherical Cameras. European Conference for Visual Media Production (CVMP 2006), pp. 20-28, November 2006, London
DOI 10.1049/cp:20061967

Jan-Michael Frahm, Kevin Köser and Reinhard Koch: Pose Estimation for Multi-Camera Systems. LNCS 3175 (26th DAGM Symposium, Tübingen, Germany), pp. 27-35, Springer-Verlag
DOI 10.1007/978-3-540-28649-3_35

 

Geolocalization and Landmark Recognition

G. Baatz, O. Saurer, K. Köser, M. Pollefeys: Leveraging Topographic Maps for Image to Terrain Alignment. Joint 3DIM/3DPVT Conference: 3D Imaging, Modeling, Processing, Visualization & Transmission (3DIMPVT 2012), Zurich, 2012
DOI 10.1109/3DIMPVT.2012.33

G. Baatz, O. Saurer, K. Köser, M. Pollefeys: Large Scale Visual Geo-Localization of Images in Mountainous Terrain. European Conference on Computer Vision (ECCV 2012), Florence, Italy, 2012
DOI 10.1007/978-3-642-33709-3_37

G. Baatz, K. Köser, D. Chen, R. Grzeszczuk, M. Pollefeys: Leveraging 3D City Models for Rotation Invariant Place-of-Interest Recognition. International Journal of Computer Vision, Vol. 96, Issue 3 (2012) (Special Issue on Mobile Vision), pp. 315-334,
DOI 10.1007/s11263-011-0458-7

D. Chen, G. Baatz, K. Koeser, S. Tsai, R. Vedantham, T. Pylvanainen, K. Roimela, X. Chen, J. Bach, M. Pollefeys, B. Girod, R. Grzeszczuk: City-Scale Landmark Identification on Mobile Devices. IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2011), Colorado Springs, USA
DOI 10.1109/CVPR.2011.5995610

Georges Baatz, Kevin Koeser, David Chen, Radek Grzeszczuk and Marc Pollefeys: Handling Urban Location Recognition as a 2D Homothetic Problem Lecture Notes in Computer Science 6316 (ECCV 2010), pp. 266-279, Springer, 2010
DOI 10.1007/978-3-642-15567-3_20