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Hedlena Bezerra


I am a kind of sun-sugar-halfGeeky-pilates-soccer girl =) I have joined ARTIS team in October 2005 to work on Non-Photorealistic Rendering (NPR) under supervision of Joelle Thollot and François Sillion. I'm granted by CAPES, a Brazilian PhD training program.

Research themes

Non-photorealistic rendering (NPR) is an area of computer graphics that focuses on expressive styles for digital art. It is a known fact that photorealism might be less effective in conveying information. This is one of the reasons why researchers focused on an alternative to the physically based representations. This example illustrates only one aspect of NPR. More generally it concentrates on various artistic styles; like paintings, drawings, and animated cartoons.
A big attraction of this area arises from the possibility to convey information that is beyond the simple reproduction of reality and only in the artist's mind. Some examples are enhanced, simplified or meaningfully colored objects. In order to enable really expressive illustrations it is fundamental to know the relationship between the information induced by style, geometry and attributes of the scene. Therefore we want to closely examine this point and believe that our work will become a seminal contribution to the NPR community.

More than just deletion of superflous details, abstraction is a cognitive process relative to memory, semantics and recognition. Indeed, each time we are confronted to a scene or an unknown object, it appears obvious than even the most attentive subject can not remember every single details of the exterior world. Abstraction, as a computer graphics process, is a way of influencing these cognitive processes and will be studied for either facilitating them (e.g. by alleviating the impact of the perception of some parts of a 3D scene) or either for hindering them (e.g. by highlighting elemnts of the scene which otherwise would have been easily forgotten).

Recent publications

Here are my latest publications:
Publications in 2010
NPAR 2010: Proceedings of the 8th International Symposium on Non-photorealistic Animation and Rendering - 2010
Publications in 2008
NPAR '08: Proceedings of the 6th International Symposium on Non-photorealistic Animation and Rendering, page 89--95 - 2008
Publications in 2007
Margareth Varela, Luiz Velho, Bruno Madeira, Hedlena Bezerra, Marcos Magalhaes
WSL - 8th International Workshop on Free Software - 2007

»See the complete list of my publications
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Curriculum Vitae

2006- PhD Candidate in Computer Science
Institut National Polytechnique de Grenoble (INPG), France

2003-2005 Master's Degree in Computer Science
Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Brazil

1998-2002 Bachelor's Degree in Computer Science
Federal University of Pernambuco (UFPE), Brazil

Related Projects

MUAN - Motion Universal Analyzer
Muan is an open source stop motion animation system, developed under Linux. The software provides an useful GUI allowing creation, editing, manipulation and visualization of animations through a video camera or a webcam connected to the computer. This system was initially designed for Educational purposes. Because of this it has a very simple usage, but it can be used both for beginners or professional animators, since it provides very important features of Stop Motion Animation.

Personal Area

ANIMA MUNDI International Animation Festival of Brazil
ANIMA ESCOLA (Anima School) A project to introduce the use of animation in Brazilian schools.