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Lyon Research Centre for Images and Intelligent Information


Axe(s) of research

LIRIS (Laboratoire d'informatique en image et systèmes d'information - Imaging and Information Technology Laboratory) was formed at the beginning of 2003 from the reorganisation of several Lyon-based research laboratories, namely LIGIM, LISI and RFV and other entities operating individually in the domain of Information and Communication Technology and Sciences. LIRIS is affiliated to the CNRS under reference FRE 2672 and covers two main research domains, Digital Imaging and Information Systems, subdivided into the following four scientific fields:

  • Field 1 - Data, Document and Knowledge Bases
  • Field 2 - Images and Video: Segmentation and Extraction of Information
  • Field 3 - Modelling and Enhanced Reality 
  • Field 4 - Communicating Information Systems

with two cross-cutting objectives:

  • Objective A - Digital Document Software Integration Platform, in conjunction with the ISDN (Institut des sciences du document numérique - Institute of Digital Document Sciences).
  • Objective B - Software Integration Platform: Distributed Medical Multimedia File, under the scope of Health Engineering.
LIRIS comprises around 150 individuals including nearly 70 research lecturers in four teaching centres in Lyon: INSA de Lyon, the Université Claude Bernard Lyon 1, the École Centrale de Lyon and the Université Lumière Lyon 2 along with other sites in La Doua, Ecully and Bron.

The Lyon 2 LIRIS team concentrates on the various aspects of modelling, analysis and processing of digital images. The Lyon 2 researchers are principally attached to Laboratory Field 3 (Geometric Modelling) in close co-operation with Field 2 (Images) and Field 4 (Communicating Information Systems). They are also heavily involved in Laboratory Cross-Cutting Objective B (Health Engineering).

For several years now, the LIRIS-Lyon 2 researchers have been major participants in both the French and International discrete geometry communities. This domain of research studies the arithmetic and geometric properties of sets of points in digital images. It finds applications which recognise or describe shapes and compress data and demonstrates the great advantage of whole number calculation which does away with the approximations and interpolations inherent in floating point calculation.

The principal field of application for our research is medical imaging. We have collaborated on numerous occasions with the Centre de lutte contre le cancer Léon Bérard (Léon Bérard Cancer Research Centre). Part of our team is currently on secondment to the latter's Radiotherapy department and is collaborating on improving an irradiation protocol using image analysis, processing and synthesis techniques. We are also working on a breast cancer diagnosis assistance system based on the automatic analysis of mammography scans.

Processing very large image databases requires computing power far in excess of that available to centralised systems alone. The medical imaging domain is further complicated by the high level of distribution of the information and its often confidential nature. For several years now, a number of research teams around the world have been concentrating their efforts on the possibility of using the latent power of networked computers and the mechanisms which would enable these resources to be pooled in order to form a computing grid. We are involved in several projects aimed at studying how these grids can be applied to the processing of medical images.

Since the end of 2003, LIRIS has been a partner of Foxstream, a newly created company supported by Créalys, the Inter-University Incubator.  Foxstream specialises in remote video surveillance and parts of its activities are based on the transfer of technologies produced by LIRIS's image processing and analysis research. In the security domain, an ever-increasing number of video cameras are being installed in sensitive sites. Foxstream provides integrated solutions for intelligent surveillance of such sites which are capable of recognizing certain predefined behaviours so that they do not set off a false alarm. For example, a pedestrian entering a car park could be categorised as a suspicious event whereas a vehicle entering the same car park could be categorised as a normal event. Similarly, systems must be capable of distinguishing between a patient having a fall in their home and a normal movement picked up by the camera.



  • Delorme M., Mazoyer J., Tougne L., "Discrete parabolas and circles on 2D cellular automata", Theoretical Computer Science, 218(2), 1999
  • Miguet S., Pierson J.M., "Quality and Complexity Bounds of Load Balancing Algorithms for Parallel Image Processing", International Journal of Pattern Recognition and Artificial Intelligence. 14, 4., 2000
  • Sarrut D., Clippe S., "Geometrical transformation approximation for 2D/3D intensity-based registration of portal images and CT scan", in Niessen W. and Viergever M.A. (editors), Medical Image Computing and Computer-Assisted Intervention MICCAI'2001, volume 2208, Springer Verlag, Lecture Notes in Computer Science, 2001
  • Feschet F., Tougne L., "Generating isotropic discrete waves on cellular automata", International Journal on Pattern Recognition and Artificial Intelligence, 15(7), 2001
  • Coeurjolly D., Miguet S., Tougne L., "Discrete Curvature based on Osculating Circle Estimation", International Workshop on Visual Form 4, Springer Lecture Notes in Computer Science, 2059, 2001
  • Tweed T., Miguet S., "Vers une aide au diagnostic du cancer du sein par une analyse multicritère de bases de données mammographiques," Revue Santé et Systémique, Hermès, 2002
  • Verdier C., "Topic Maps for browsing and restitution of distributed data", 12th Int. Colloquium on Numerical Analysis and Computer Science with Applications, Plovdiv, Bulgaria, 2003
  • Coeurjolly D., Gerard Y., Reveillès J.P., Tougne L., "An elementary algorithm for digital arc segmentation", Discrete Applied Mathematics, forthcoming 2003)
  • Feschet F., Tougne L., "An approach for the estimation of the precision of a real object from its digitization" Discrete Applied Mathematics, (forthcoming 2003)
  • Clippe S., Sarrut D., Malet C., Miguet S., Ginestet C., Carrie C., "Patient setup error measurement using 3D intensity-based image registration techniques", International Journal of Radiation Oncology Biology Physics., (forthcoming 2003)
  • Boldea V., Sarrut D., "Lung Deformation Estimation with Non-Rigid Registration for Radiotherapy Treatment." in Medical Image Computing and Computer-Assisted Intervention MICCAI'2003, Springer Verlag, Lecture Notes in Computer Science, (forthcoming 2003)
  • Hassan K., Tweed T., Miguet S., "A multi-resolution approach for a content-based image retrieval on the grid. Application to breast cancer detection", Methods of Information in Medicine, (forthcoming 2004)
  • Coeurjolly D., Miguet S., Tougne L., "2D and 3D Visibility in Discrete Geometry: an Application to Discrete Geodesic Paths", Pattern Recognition Letters, (forthcoming 2004)
  • Manzi de Arantes W. Junior, Verdier C., "Keys graph-based relational to XML translation algorithm", ICEIS 2004, IEEE conf., 5th Int. Conf. on Enterprise Information Systems, Porto, Portugal, 2004


  • Cooperation with the Léon Bérard Cancer Research Institute since 1996 in order to improve a cancer radiotherapy protocol.
Since 2002: cooperation with Elekta (manufacturer of linear accelerators used in conformal radiotherapy). Joint supervision of a CIFRE scholarship holder financed by Elekta.
Since 2003: delegation of David Sarrut to the Léon Bérard Centre and facilitation of a research group delocalised to CLB, in cooperation with Creatis and field 3 of LIRIS.
  • Involvement in the Joint Incentive Action scheme (ACI GRID) Medigrid: processing medical data in the calculation grid. Cooperation with the Creatis laboratory and field 4 of LIRIS.
  • Coordination of the regional scheme (2003-2006) RAGTIME (Rhône-Alpes: medical data processing grid). Cooperation with the CLB for analysing databases dedicated to mammography data.
  • On the French side, initiator of a bilateral agreement scheme (2002-2006) with Algeria: CMEP Avicenne Grid project.
  • At LIRIS, in charge of developing the young Foxstream Company which is specialised in analysing video data for telemonitoring.


4 research lecturers
3 PhD students
2 ATER's (Temporary Teaching and Research Posts)
1 Invited Professor
3 associate researchers

Statutory members
Péroche Bernard - Miguet Serge - Sarrut David - Tougne Laure - Verdier Christine - Coeurjolly David - Rital Soufiane - Tweed Tiffany

Other information

Partner institution
  • Lumière University (Lyon 2)
  • Claude Bernard University (Lyon 1)
  • École Centrale' Engineering school, Lyon

[en]Infos pratiques

  • [en]Reconnaissance : Recognised by the Ministère de l'éducation nationale, de l'enseignement supérieur et de la recherche (The Ministry of National Education, Higher Education and Research), CNRS (National Centre for Scientific Research)
  • [en]Courriel : liris@liris.univ-lyon2.fr
  • on Internet : http://liris.cnrs.fr


  • Bâtiment Europe
    5 avenue Pierre Mendès-France
    69676 Bron cedex
  • [en]Téléphone : 33 (0)4 78 77 23 09
  • [en]Fax : +33 (0)4 78 77 23 38
  • 2nd address
    Claude Bernard University (Lyon 1)
    Bâtiment Nautibus (710),
    43 bd du 11 Novembre 1918
    F 69622 Villeurbanne cedex


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