Contrasts, Independent Component Analysis, and Blind Deconvolution
International Journal of Adaptive Control and Signal Processing
A general definition of contrast criteria is proposed, which induces
the concept of trivial filters. These optimization criteria enjoy
identifiability properties, and aim at delivering outputs satisfying
specific properties, such as statistical independence or a discrete
character. Several ways of building new contrast criteria are
described. It is then briefly elaborated on practical numerical algorithms.