Usage survey for image processing tool (astronomy related)

This important 3-minutes-survey aims to make an inventory of the different tools used in astronomy (for image visualization & processing) and how they could be improved in order to facilitate astronomy related discoveries.
There are only 12 required questions and the answers of this survey will be available for the ones who want it. The results will also be shared to software developers (DS9 and others) and might influence the way they implement their codes so please fill with care. Thanks a lot in advance!