Image Set: An image set is a collection of images taken together to form a time lapse sequence, area scan, or a Z-stack, or any combination of these. Image sets are often complex grouping that include more than one dimension, such as both time and Z/focus dimensions, as well as channel specificity and more. This would mean that a single image member of a given image set could, for example, represent a single channel at a single distance/focus and a single moment in time. The collection of images would therefore need to be organized and reconstituted to be viewable and analyzable in any meaningful way.
Image-Pro is designed to work with the metadata and naming conventions found in many sets created by commonly used image acquisition tools and to organize the files according to the their significant dimensions (or let you organize them) so that they can be constituted into a single image set file (with the extension *.mcs). See "Working with Image Sets" for more information.