Image Object Hierarchy
This is a data structure that incorporates image analysis results, which have been extracted from a
scene. The concept is illustrated in the figure below.
It is important to distinguish between image object levels and image layers. Image layers represent
data that already exists in the image when it is first imported. Image object levels store image
objects, which are representative of this data.
The scene below is represented at the pixel level and is an image of a forest. Each level has a superlevel
above it, where multiple objects may become assigned to single classes – for example, the
forest level is the super-level containing tree type groups on a level below. Again, these tree types
can consist of single trees on a sub-level.
Every image object is networked in a manner that each image object knows its context – who its
neighbors are, which levels and objects (superobjects) are above it and which are below it (subobjects).
No image object may have more than one superobject, but it can have multiple subobjects.
eCognition
Image Object HierarchyThis is a data structure that incorporates image analysis results, which have been extracted from ascene. The concept is illustrated in the figure below.It is important to distinguish between image object levels and image layers. Image layers representdata that already exists in the image when it is first imported. Image object levels store imageobjects, which are representative of this data.The scene below is represented at the pixel level and is an image of a forest. Each level has a superlevelabove it, where multiple objects may become assigned to single classes – for example, theforest level is the super-level containing tree type groups on a level below. Again, these tree typescan consist of single trees on a sub-level.Every image object is networked in a manner that each image object knows its context – who itsneighbors are, which levels and objects (superobjects) are above it and which are below it (subobjects).No image object may have more than one superobject, but it can have multiple subobjects.eCognition
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