

Research Interests
I am presently beginning as a new associate professor (maître de conférences) at LIPADE lab in Paris Descartes university. My research statement is to pursue my works on expressive content analysis and rendering, and medical image analysis.
I have obtained my Ph.D. at the Télécom Paris school and Ecole Polytechnique de Montréal under the guidance of the late Francis Schmitt, Yann Gousseau and Farida Cheriet. My research interests lie in the image analysis, retrieval and synthesis of 2D fine artworks (paintings, drawings, etchings...). Recent works deal with expressive rendering (NPR), pictorial content analysis and pictorial effect indexing of line drawings. My research interest also includes medical image analysis with Farida Cheriet at the Ecole Polytechnique de Montreal.
I received a FQRNT doctoral scholarship for 2006-2007.
Projects
Co-authors by alphabetical order: Farida Cheriet, Maria Chronopoulos, Jean-François Coeurjolly, Haroldo Dalazoana, Jean Dansereau, Rémy Drouilhet, Yann Gousseau, Julie Joncas, Pierre-Edouard Landes, the late Francis Schmitt, Joëlle Thollot.During my postdoc, I am studying the expressive rendering of stroke-based vector textures.
Three examples of example-based synthesis. Top left, a user draws a texture arrangement of stroke-based elements. Top right, elements are categorized based on their visual appearance. Bottom, spatial relationships is learnt in the example using a statistical model, and the texture can next be automatically synthesized at larger sizes.
During my PhD thesis, I studied the pictorial effect of line-drawings. This effect can be understood as the preattentive visual impression before any semantic reconstruction, as also studied by Julesz. It is closely related to the artistic style and the aesthetic content.
The spatial organisation of colored regions is similar to the pictorial composition. Image retrieval based on this specific content is serendipitous. We proposed an approach which does not relies on a segmentation step. Depiction of images are small thumbnails, and the similarity measure is based on the Earth Mover's Distance (Fig. 1). We also developped an adaptative matching criterion which basically adjust the number of similar images returned to the user according to its query (Fig. 2)
Collaborating with Farida Cheriet who supervised my Master and a part of my Ph.D., we study new image analysis methods to assist the diagnostic of surgeons.
Two scars color images. Extracted boundaries are blues. Red (resp. green) boundaries are extracted manually by user A (resp. B) at two different times. (DICTA'03)
A knee MRI segmented using a level-lines selection method (ICIAR'07).
MRI from the human project using a level-lines selection method (ICIAR'07).
Teaching
DUT STID
- Java, lecturer (Fall 2009)
Ecole Polytechnique de Montréal
- GBM3720 undergraduate course, designer (Summer 2008)
- INF6801 graduate course, lecturer (Winter 2008)
- INF4710 undergraduate course, lecturer (Fall 2007)
- INF6801 graduate course, practical work supervisor (Winter 2007)
- INF6801 graduate course, lecturer (Winter 2007)
- INF1005A undergraduate course, lecturer (Fall 2006)
- INF1005A undergraduate course, practical work supervisor (Fall 2005)
Seminar Talks
- 19th january 2010: LIASD Paris 8, on our NPAR paper
- 6th november 2009: ECAIS days Paris, on our CVIU and NPAR papers
- 20th may 2009: LI-RFAI Tours, on our CVIU and NPAR papers
- 30th april 2009: LIP6-MALIRE Paris, on our CVIU and NPAR papers
- 26th february 2009: CNAM-Vertigo, on much of my previous works
- 28th november 2008: INRIA-ARTIS days, on much of my previous works
- 15th december 2006: LIV4D Montreal, on a contrario methods
- 1st june 2006: Club EEA Paris, on our CGIV paper