CLEAN AND WIPE

CLEAN is a matching pursuit process which has two weak points: in situ ations of astrophysical interest, the ''clean map'' is not stable in t he corresponding object representation space, and the ''atoms'' of thi s representation (translated versions of the ''clean beam'') are not w ell suited for reconstructing the boundaries of the structuring entiti es of the object at the related resolution level. As a result, CLEAN m ust be interrupted before the best possible fit is reached. How does W IPE wipe CLEAN clean? First, by introducing a global regularization pr inciple based on the concept of resolution; and second, by conducting the matching pursuit process at the level of the high-resolution basis functions of the object space.