Systems and methods for describing image content establish image
description records which include an object set (24), an object hierarchy
(26) and entity relation graphs (28). For image content, image objects
can include global objects (O0 8) and local objects (O1 2 and O2 6). The
image objects are further defined by a number of features of different
classes (36, 38 and 40), which in turn are further defined by a number of
feature descriptors. The relationships between and among the objects in
the object set are defined by the object hierarchy (26) and entity
relation graphs (28). The image description records provide a standard
vehicle for describing the content and context of image information for
subsequent access and processing by computer applications such as search
engines, filters, and archive systems.