The question of processing of Non Destructive Evaluation (NDE) signals is of prime importance, it allows to assess material integrity and quantify detected flaws with reliability. The scope of this Seventh International Workshop will be particularly focused on the cross-fertilization of the fields of NDE and signal processing with participation of international specialists from both fields. Additionally, the Workshop will be an opportunity to perform a reflection on recent developments and also analyze new emerging techniques which are seen promising. We recall that the First, Second, Third, Fourth, Fifth and Sixth Workshops were held respectively in 1987, 1993, 1997, 2001, 2005 all in Québec city but with the 6th edition held 2009 in London, Ontario when it was part of the NDT in Canada 2009 conference organised jointly with the Canadian Institute for NDE (CINDE). The next Workshop will be held in Quebec City in Summer 2013. The 7th Workshop will take place jointly with the conference ISEM 2013 (16th International Symposium on Applied Electromagnetics and Mechanics).