THEYS , C.

International audience

Ecole ITHD, n/a, (2005)

n/a, ed. POPSUD, POPSUD n/a, p. n/a (2005)

Ecole ITHD, n/a, (2005)

Colloque sur le Traitement du Signal et des Images, GRETSI, n/a, (2005)

EURASIP Journal on Applied Signal Processing, special issue on Applications of Signal Processing in Astrophysics and Cosmology, 15, (2005)

EUSIPCO 2006, n/a, (2006)

Not Available

Aims: This work deals with image reconstruction in a vignetting zone where the point spread function becomes evanescent and the image undergoes a Fredholm transformation. The application of this method is aimed at the reconstruction of the solar corona in the vignetting zone of the ASPIICS coronagraph. It extends on a previous paper in several...

International audience

Aims. This study is carried out in the context of data processing of the solar coronagraph ASPIICS of the future formation-flying mission Proba-3, which is expected to provide images of the corona very close to the limb. There will be a transition zone of the order of 100 arcsec close to the limb, where the telescope aperture suffers a strong...

This paper addresses the problem of linear unmixing for hyperspectral imagery. This problem can be formulated as a linear regression problem whose regression coefficients (abundances) satisfy sum-to-one and positivity constraints. Two scaled gradient iterative methods are proposed for estimating the abundances of the linear mixing model. The...

ADA III Conference, n/a, (2004)