Adress:Laboratoire Calculateurs Embarqués et Image
91191 Gif-sur-Yvette Cedex
tél.:+33 1 69 08 45 42
|I graduated from Institut Supérieur d'Électronique du Nord and from University of Valenciennes. I have been a PhD student since September 1998.|
|My research works deal with image sequence restoration.
We are interested in improving characteristics of low-resolution images (signal to noise ratio, spatial resolution) using temporal information.
In a first time, we have led a comparative study of different spatio-temporal filtering schemes for denoising image sequences. We found that an adaptive spatio-temporal Wiener filter computed via 3D DFT allowed a good trade-off between computation time and restoration quality. Before applying this filter, the image sequences must be compensated for motion. For estimating motion, we use a 2D parametric motion model estimated via an incremental multiresolution technique developped byVista.
This filter has been shown to perform good results when integrated as a preprocessing step in a super-resolution scheme.
We now want to develop models for simultaneous displacement estimation and enhancement of noisy-blurred image sequences, so that each phase benefits from the increased quality of the other one.