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News of the MMSPG

Touradj Ebrahimi Elected as JPEG Convener

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JPEG, JPEG 2000, JPEG XR, JPSearch and more recently, the JPEG XT, JPEG Systems and JPEG AR families of imaging standards. The WG1 group meets nominally three times a year, in Europe, North America and Asia. The latest meeting was held on July 7 – 11, 2014 in Sapporo, Japan.

Touradj Ebrahimi has been elected as the new Convener of JPEG Committee. He has a longstanding involvement in JPEG, MPEG and SC29 standardisation committees and was currently acting as the Chairman of Advisory Group on Management in SC29. Touradj EBRAHIMI received his M.Sc. and Ph.D., both in Electrical Engineering, from the Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland, in 1989 and 1992 respectively. In 1993, he was a research engineer at the Corporate Research Laboratories of Sony Corporation in Tokyo, where he conducted research on advanced video compression techniques for storage applications. In 1994, he served as a research consultant at AT&T Bell Laboratories working on very low bitrate video coding. He is currently Professor at EPFL heading its Multimedia Signal Processing Group. He was also adjunct Professor with the Center of Quantifiable Quality of Service at Norwegian University of Science and Technology (NTNU) from 2008 to 2012.

“I am honoured to be elected as the new Convener of the JPEG standardisation committee. Billions of images are produced on daily basis in JPEG formats and hence I considered it as a huge responsibility to take care that the committee keeps on supporting digital imaging ecosystem and to assure support for functionalities required by future applications and imaging devices.” said Prof. Touradj Ebrahimi, the new Convener of the JPEG committee.

At this opportunity, the JPEG Committee wishes to thank the former WG 1 Convener Dr. Daniel Lee (US) for his leadership and vision in the development of the JPEG family of standards. WG 1 wishes to express its deepest thanks and appreciation for his effort and dedication over the last 18 years.

“It was an honour to serve as JPEG Convener over the past 18 years. It was an interesting journey to manage the very successful standards developed by the JPEG Committee. I am convinced that Prof. Touradj Ebrahimi is well placed to continue this endeavour.” said Dr. Daniel Lee, former Convener of the JPEG committee.

The next (67th) WG 1 Meeting and its ad hoc group meetings will be held on October 20-24, 2014, in Strasbourg, France.

More information about JPEG and its work is available at www.jpeg.org or by contacting Peter Schelkens and Fumitaka Ono of the JPEG PR ad hoc group at pr@jpeg.org.



Posted by Touradj Ebrahimi at 8:01
Ivan Ivanov receives his PhD degree

Ivan Ivanov receives his PhD degree after successful private and public defenses.

The PhD thesis entitled "Advanced Social Media Analysis" can be consulted here.

Posted by Touradj Ebrahimi at 9:08
MMSPG proposes a JPEG backward compatible HDR to JPEG committee for standardization

MMSPG responded to the call for technology for a JPEG backward compatible High Dynamic Range image compression issued by JPEG committee. One of the four technologies proposed, MMSPG is the only proposal submitted purely by a university. The algorithm was presented at the Shanghai October meeting of JPEG committee which was also chaired by Prof. Ebrahimi. The JPEG committee is now in the process of converging to a standard, and will meet during 18-21 January 2013, in Lausanne, at EPFL premises.


Posted by Touradj Ebrahimi at 13:00
Francesca de Simone receives her PhD degree for thesis entitled : Selected Contributions on Multimedia Quality Evaluation.

Francesca de Simone received her doctoral degree from EPFL on July 27th, 2012. Bravo Dr. de Simone for this great achievement!

Posted by Touradj Ebrahimi at 21:56
Comments (1)
MMSPG is selected as a finalist for Multimedia Grand Challenge 2010

See more details at: http://comminfo.rutgers.edu/conferences/mmchallenge/

Posted by Touradj Ebrahimi at 22:48
Francesca de Simone receives the Qualcomm best student paper award at QoMEX 2009

Francesca de Simone has received the best student paper award sponsored by Qualcomm at QoMEX 2009, for the paper entitled:

SUBJECTIVE ASSESSMENT OF H.264/AVC VIDEO SEQUENCES TRANSMITTED OVER A NOISY CHANNEL by F. De Simone, M. Naccari, M. Tagliasacchi, F. Dufaux, S. Tubaro, T. Ebrahimi

More information about QoMEX 2009 are available at http://www.qomex.org, including the video of awards ceremony.


Posted by Touradj Ebrahimi at 17:55
Mourad Ouaret receives his Ph.D. thesis during a public ceremony

The latest Ph.D. thesis from MMSPG came from Mourad Ouaret who defended it during a public ceremony on January 9th, 2009, and hence became the 14th Ph.D. from MMSPG since its creation, 10 years ago.

Posted by Touradj Ebrahimi at 15:43
Prof. Touradj Ebrahimi receives an ISO award for key contributions to development of secure JPEG 2000 standard
Prof. Touradj Ebrahimi receives an ISO award for key contributions to development of secure JPEG 2000 standard.
Posted by Touradj Ebrahimi at 23:38
Dr. Frédéric Dufaux receives an ISO award for key contributions to development of JPEG 2000 wireless standard
Dr. Frédéric Dufaux receives an ISO award for key contributions to development of JPEG 2000 wireless standard.
Posted by Touradj Ebrahimi at 23:37
New PhD granted to David Marimon
David Marimon successfully defends his PhD thesis entitled
Advances in Top-Down and Bottom-Up Approaches to Video-Based Camera Tracking

The public defense will take place on Thursday 6th Dec in room ELA1 (http://plan.epfl.ch/?room=ELA1)

Abstract of his thesis
Video-based camera tracking consists in trailing the three dimensional pose followed by a mobile camera using video as sole input. In order to estimate the pose of a camera with respect to a real scene, one or more three dimensional references are needed. By comparing what is seen by a camera with what is geometrically known from reality, it is possible to recover the pose of the camera that is sensing these references.

In this thesis, we investigate the problem of camera tracking at two levels. Firstly, we work at the low level of feature point recognition. Feature points are used as references for tracking and we propose a method to robustly recognise them. More specifically, we introduce a rotation-discriminative region descriptor and an efficient matching method. Secondly, we have worked at the higher level of camera tracking and propose a fusion of top-down (TDA) and bottom-up approaches (BUA). We combine marker-based tracking using a BUA and feature points recognised from a TDA into a particle filter. The goal of the fusion is to take advantage of their compensated strengths. In particular, we are interested in covering automatic initialisation, automatic recovery after loss of track, and tracking beyond references known a priori.

Experiments have been performed at the two levels of investigation. Firstly, tests have been conducted to evaluate the performance of the recognition method proposed. A comparison with similar techniques in the state of the art depicts the equal or even higher precision of our method with much lower computational cost. Secondly, experimental assessment of the tracking system is also conducted. Results show that the fusion tracker solves characteristic failure modes of the two combined approaches. A comparison with similar trackers shows competitive accuracy. In addition, all the three capabilities stated earlier are fulfilled only in our tracker.

The camera tracking system has a potential application in the robotics domain. It has been successfully used as a man-machine interface, applied in Augmented Reality environments and tested in public events. In particular, the system has been used by students of the Ecole Cantonale d'Art de Lausanne (ECAL) with the purpose of conceiving new interaction concepts. Moreover, in collaboration with ECAL and fabric|ch (studio for architecture & research), we have jointly developed the Augmented interactive Reality Toolkit (AiRToolkit).
Posted by David Marimon Sanjuan at 10:09
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