Hanjie Pan

I have left LCAV on March 31, 2019 and started a job at Google Zürich. I can be reached at my gmail address below.

Audiovisual Communications Laboratory (LCAV)
School of Computer and Communication Sciences (IC)
Ecole Polytechnique Fédérale de Lausanne (EPFL)

Office: BC 322
Station 14
CH-1015 Lausanne
Phone: (+41) 21 693 5636  WebCall
Fax: (+41) 21 693 4312
E-mail: panhanjie (gmail.com)


I was an M.Phil. student at Image & Video Processing Lab, CUHK. Prof. Thierry Blu  was my undergraduate and graduate supervisor. My M.Phil. study focused on two sparse image restoration problems: 1) Solving the standard ell-1 regularized objective functional with linear expansion of thresholds (LET) ; 2) Sampling signals (specifically two-dimensional curves) with finite rate of innovation (FRI). I was a visiting research student at Imperial College London supervised by Prof. Pier-Luigi Dragotti during the summer 2010. From 2016 to 2017, I was affiliated with IBM Research Zurich as a research engineer working on source estimation from LOFAR radio telescope measurements.

My PhD work focused on continuous-domain sparse recovery based on of FRI sampling. I was co-advised by Prof. Martin Vetterli and Prof. Thierry Blu within Audiovisual Communications Laboratory (LCAV). Applications of the sparse recovery technique include, point source estimation in astronomy, direction of arrival estimation in acoustics and super-resolution microscopy.

Curriculum Vitae

LinkedIn Profile


Docteur ès Sciences (Ph.D.), Computer & Communication Sciences, Ecole Polytechnique Fédérale de Lausanne, 01.06.2018

M.Phil. in Electronic Engineering, Digital Signal/Image Processing, The Chinese University of Hong Kong, 31.05.2013

Bachelor of EngineeringElectronic Engineering, The Chinese University of Hong Kong, 31.07.2010

Research interests

  • Super-resolution microscopy;
  • Sampling signals with Finite Rate of Innovation (FRI);
  • Image restoration with Linear Expansion of Thresholds (LET).



H. Pan : Looking beyond Pixels. Lausanne, EPFL, 2018. DOI : 10.5075/epfl-thesis-8340.

Journal Articles

H. Pan; T. Blu; M. Vetterli : Efficient Multi-dimensional Diracs Estimation with Linear Sample Complexity; IEEE Transactions on Signal Processing. 2018-07-20. Vol. 66, num. 17, p. 4642-4656. DOI : 10.1109/TSP.2018.2858213.
H. Pan; M. M. J.-A. Simeoni; P. Hurley; T. Blu; M. Vetterli : LEAP: Looking beyond pixels with continuous-space EstimAtion of Point sources; Astronomy & Astrophysics. 2017. Vol. 608, p. A136. DOI : 10.1051/0004-6361/201731828.
H. Pan; T. Blu; M. Vetterli : Towards Generalized FRI Sampling with an Application to Source Resolution in Radioastronomy; IEEE Transactions on Signal Processing. 2017. Vol. 65, num. 4, p. 821-835. DOI : 10.1109/TSP.2016.2625274.
H. Pan; T. Blu; P. L. Dragotti : Sampling Curves with Finite Rate of Innovation; IEEE Transactions on Signal Processing. 2014. Vol. 62, num. 2, p. 458-471. DOI : 10.1109/TSP.2013.2292033.
H. Pan; T. Blu : An Iterative Linear Expansion of Thresholds for l1-based Image Restoration; IEEE Transactions on Image Processing. 2013. Vol. 22, num. 9, p. 3715-3728. DOI : 10.1109/TIP.2013.2270109.

Conference Papers

E. Bezzam; A. Besson; H. Pan; D. Perdios; J.-P. Thiran et al. : Sparse Recovery of Strong Reflectors With an Application to Non-Destructive Evaluation. 2018-01-01. IEEE International Ultrasonics Symposium (IUS), Kobe, JAPAN, Oct 22-25, 2018.
E. Bezzam; R. Scheibler; J. Azcarreta; H. Pan; M. Simeoni et al. : Hardware And Software For Reproducible Research In Audio Array Signal Processing. 2017. IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), New Orleans, LA, MAR 05-09, 2017. p. 6591-6592. DOI : 10.1109/ICASSP.2017.8005297.
F. Xue; H. Pan; R. Wu; X. Liu; J. Liu : Optimization Of Compound Regularization Parameters Based On Stein'S Unbiased Risk Estimate. 2017. IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), New Orleans, LA, MAR 05-09, 2017. p. 4591-4595. DOI : 10.1109/ICASSP.2017.7953026.
H. Pan; R. Scheibler; E. F. Bezzam; I. Dokmanic; M. Vetterli : FRIDA: FRI-Based DOA Estimation For Arbitrary Array Layouts. 2017. ICASSP 2017, New Orleans, USA, March 5-9, 2017. p. 3186-3190. DOI : 10.1109/ICASSP.2017.7952744.
H. Pan; T. Blu; M. Vetterli : Annihilation-driven Localised Image Edge Models. 2015. 40th IEEE International Conference on Acoustics, Speech and Signal Processing, Brisbane, April 19-24, 2015. p. 5977-5981. DOI : 10.1109/ICASSP.2015.7179119.
H. Pan; T. Blu; P. L. Dragotti : Sampling Curves with Finite Rate of Innovation. 2011. 9th International Conference on Sampling Theory and Applications, Singapore, May 2-6, 2011.
H. Pan; T. Blu : Sparse Image Restoration Using Iterated Linear Expansion of Thresholds. 2011. 18th IEEE International Conference on Image Processing, Brussels, Belgium, September 11-14, 2011. p. 1905-1908. DOI : 10.1109/ICIP.2011.6115842.