Ma photo

Alexandrina Orzan


I obtained my PhD at Grenoble Institute of Technology in June 2009, under the guidance of Joëlle Thollot and Jean-Marc Hasenfratz.

Research themes

Generally speaking, I'm interested in:

My PhD work focused on user-guided image manipulation. The principle that spans my doctorate studies is that we can represent, create and edit pictures using a "contour-drawing" metaphor. Just as classical visual arts use line drawings as a starting point, we use the contours in a line drawing as a basis on which to build a digital image representation.

This principle is used in our SIGGRAPH 2008 paper, where we proposed a new vector-based primitive for creating complex color gradients: the diffusion curve. We showed that this representation is a simple, powerful and intuitive way of defining vector graphics images. Furthermore, diffusion curves can be extracted automatically from a photograph by relying on an edge-based structure we proposed in our NPAR 2007 paper. Diffusion curves can also natively handle textures, as described in our EGSR 2009 paper.

Recent publications

Here are my latest publications:
Publications in 2009

Computer Graphics Forum (Proceedings of the Eurographics Symposium on Rendering 2009), Volume 28, Number 4, page 1091--1099 - 2009
Publications in 2008

» See the complete list of my publications
» Image gallery

Curriculum Vitae

2005 - 2009: PhD. in Mathematics and Computer Science at Grenoble Institute of Technology, France.

2004 - 2005: MPRI Master at ENS de Cachan, France.

1999 - 2003: B.Sc. studies at the Faculty of Computer Science of "Al.I.Cuza" University, in Iasi, Romania.

You can also download a detailed CV in english (pdf).