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M.Sc. Kun Liu
刘坤
Chair of Pattern Recognition and Image Processing
Institute for Computer Science
Albert-Ludwigs-University
Georges-Koehler-Allee 052, room 01-021
D-79110 Freiburg i.Br., Germany
Telefon: +49-(0)761-203-8273
Fax: +49-(0)761-203-8262
Email: liu AT informatik.uni-freiburg.de
Current email: kun.liu.sjtu [at] gmail (dot) com

Scientific Interests

  • Invariance in Image Analysis

  • Object detection and segmentation

  • Biomedical image analysis

Projects

CV

  • From Jul. 2010, Ph.D. student, Chair of Pattern Recognition and Image Processing, Computer Science Department, University of Freiburg

  • Sep. 2007 - Mar. 2010, Master Degree, Institute of Image Processing and Pattern Recognition, SJTU.
    Link to homepage (last update: Jan 2010).

  • Sep. 2003 - Jun. 2007, Bachelor Degree, Department of Automation, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University (SJTU)

Publications

2014
Journal
The iRoCS Toolbox – 3D Analysis of the Plant Root Apical Meristem at Cellular Resolution   doi> Code/data
Thorsten Schmidt, T. Pasternak, Kun Liu, T. Blein, D. Aubry-Hivet, A. Dovzhenko, J. Dürr, W. Teale, F. Ditengou, Hans Burkhardt, Olaf Ronneberger, K. Palme
The Plant Journal, 77(5): 806--814, Mar 2014
Rotation-Invariant HOG Descriptors using Fourier Analysis in Polar and Spherical Coordinates   doi> Code/data
Kun Liu, Henrik Skibbe, Thorsten Schmidt, T. Blein, K. Palme, Thomas Brox, Olaf Ronneberger
International Journal of Computer Vision, 106(3): 342-364, 2014

Conference
Optical Flow Guided Cell Segmentation and Tracking in Developing Tissue   doi>
Kun Liu, S. Lienkamp, A. Shindo, J. Wallingford, G. Walz, Olaf Ronneberger
IEEE International Symposium on Biomedical Imaging (ISBI): 298--301, 2014

Others
Fourier based rotation invariance and biological image analysis : rotation invariant description and detection, and cell segmentation   doi>
Kun Liu
PhD thesis from Albert-Ludwigs-Universität Freiburg, 2014
 
2013

Conference
Joint 3D Cell Segmentation and Classification in the Arabidopsis Root using Energy Minimization and Shape Priors   doi>
Kun Liu, Thorsten Schmidt, T. Blein, J. Dürr, K. Palme, Olaf Ronneberger
IEEE International Symposium on Biomedical Imaging (ISBI): 422--425, 2013
 
2012
Journal
ViBE-Z: A Framework for 3D Virtual Colocalization Analysis in Zebrafish Larval Brains   doi>
Olaf Ronneberger, Kun Liu, M. Rath, D. Rueß, T. Mueller, Henrik Skibbe, Benjamin Drayer, Thorsten Schmidt, A. Filippi, R. Nitschke, Thomas Brox, Hans Burkhardt, W. Driever
Nature Methods, 9(7): 735-742, 2012
Vertebrate kidney tubules elongate using a planar cell polarity–dependent, rosette-based mechanism of convergent extension   doi>
S. Lienkamp, Kun Liu, C. Karner, T. Carroll, Olaf Ronneberger, J. Wallingford, G. Walz
Nature Genetics, 44(12): 1382--1387, Dec 2012
Shroom3 is required downstream of FGF signalling to mediate proneuromast assembly in zebrafish   doi>
S. Ernst, Kun Liu, S. Agarwala, N. Moratscheck, M. Avci, D. Nogare, A. Chitnis, Olaf Ronneberger, V. Lecaudey
Development, 139(24): 4571--4581, 2012

Conference
Hierarchy of Localized Random Forests for Video Annotation   PaperHRF_dagm2012.pdf
Naveen Shankar Nagaraja, Peter Ochs, Kun Liu, Thomas Brox
Pattern Recognition (Proc. DAGM), Springer, LNCS , 2012
2D/3D Rotation-Invariant Detection using Equivariant Filters and Kernel Weighted Mapping   Paperliu_cvpr2012.pdf Code/data
Kun Liu, Qing Wang, W. Driever, Olaf Ronneberger
IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2012
 
2011

Conference
3D Rotation-Invariant Description from Tensor Operation on Spherical HOG Field   PaperBMVC2011_79_final.pdf doi>
Kun Liu, Henrik Skibbe, Thorsten Schmidt, T. Blein, K. Palme, Olaf Ronneberger
British Machine Vision Conference (BMVC), Aug 2011

Teaching



Master Thesis

Key techniques in Video Surveillance

Subtasks:

  • Object detection and tracking

  • Abnormal behaviour detection and Analysis of trajectories

  • Matching people across different tracks