As realisation of a second abstraction level IMALYS is able to
calculate a variety of standardized and user-defined attributes
and features that are associated with the segmented regions.
These are derived from the physical and geometric
characteristics of the image segments as well as their proximity
relations. The user is enabled to define new features by
combining existing ones with the help of simple mathematical
expressions. Eventually segments and derived attributes are
linked to each other using a database table. By choosing
suitable segmentation parameters as well as significant variety
of attributes the combination of image segments and their
features is able to hold as much information content as the
original data. That is why IMALYS disregards the original data
further on and continues to solely operate with the image
segmentation layer and its derived attributes.