  The Geneva Affective Picture Database WordNet Annotation Tool (GWAT) is a
user-friendly web application for manual annotation of pictures in Geneva
Affective Picture Database (GAPED) with WordNet. The annotation tool has an
intuitive interface which can be efficiently used with very little technical
training. A single picture may be labeled with many synsets allowing experts to
describe semantics with different levels of detail. Noun, verb, adjective and
adverb synsets can be keyword-searched and attached to a specific GAPED picture
with their unique identification numbers. Changes are saved automatically in
the tool's relational database. The attached synsets can be reviewed, changed
or deleted later. Additionally, GAPED pictures may be browsed in the tool's
user interface using simple commands where previously attached WordNet synsets
are displayed alongside the pictures. Stored annotations can be exported from
the tool's database to different data formats and used in 3rd party
applications if needed. Since GAPED does not define keywords of individual
pictures but only a general category of picture groups, GWAT represents a
significant improvement towards development of comprehensive picture semantics.
The tool was developed with open technologies WordNet API, Apache, PHP5 and
MySQL. It is freely available for scientific and non-commercial use.
