Class features
Class features depend on image object features and refer to the class assigned to image objects situated at any location in the image object hierarchy.
This location is specified for super-objects and sub-objects by the level distance defining the vertical distance in the image object hierarchy. For neighbor image objects the location is specified by the spatial distance defining the horizontal distance in the image object hierarchy. These feature distances can be edited.
Class features are global features because they are not related to individual image objects. Class features are grouped as follows:
- Relations to neighbor objects features are used to describe an image object by its relationships to other image objects of a given class on the same image object level.
- Relations to sub-objects features describe an image object by its relationships to other image objects of a given class on a lower image object level in the image object hierarchy. You can use these features to evaluate sub-scale information because the resolution of image objects increases the lower you move in the image object hierarchy.
- Relations to super-objects features describe an image object by its relations to other image objects of a given class on a higher image object level in the image object hierarchy. You can use these features to evaluate super-scale information because the resolution of image objects decreases the higher you move in the image object hierarchy.
- Relations to classification features are used to find out about the current or potential classification of an image object.
- Customized class-related features refer to class-related features. They are available after they have been created in section Customized.
