GUI for graphical data retrieval by means of semantic filtering
The new approach of manipulation with graphical information in mobile environment is discussed. This approach is based on usage of special semantic filters that use the semantic description of the graphical information (e.g. ownership of the graphical object, connection between rooms) to allow faster and more precise specification of user's region of interest. With these filters the user can specify more complex queries that should give more satisfactory results. The retrieval process consists of two steps. First, the user obtains information about the semantic structure of the graphical information and defines the semantic filter. Secondly the interesting graphical data are retrieved only. Software technology used is based on the use of XML/XSLT (W3C, XML) and the semantic description is done in MPEG-7 standard. The first prototype tests are positive.