Serge Simoens

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We propose in this paper a robust multi-resolution technique to estimate dense velocity field from image sequences. It couples a Gaussian pyramidal down-sampling decomposition together with a multi-grid approach. At each pyramid level, bilinear interpolation and efficient warping techniques are performed to generate a residual images. The displacement field(More)
1. ABSTRACT Satellite observations are currently of major importance in geosciences. Remote sensing is a strong tool to study atmospheric and earth phenomena. Dynamic natural phenomena in the atmosphere are generally turbulent due to a high Reynolds number. Geostationary satellites are now able to give a good compromise between spatial resolution and(More)
BACKGROUND Emotional distress is common in cancer patients. This study aimed to describe, in the year after a cancer diagnosis: the incidence of anxiety, depression and excessive alcohol use; the pattern of these diagnoses and treatment over time; and the nature and duration of the prescribed treatment. METHODS A matched case-control study was conducted(More)
In this paper, we propose a new formulation of the Differential Optical Flow Equation (DOFE) between two consecutive images considering spatial and temporal information from both. The displacement field is computed in a Markov Random Field (MRF) framework. The solution is done by minimization of the Gibbs energy using a Direct Descent Energy (DDE)(More)
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