On the filtering of imperfect multimedia information by means of representation-based queries

The issue of handling imperfect information in a multimedia database system is addressed. The issue of filtering imperfect information appears to be especially crucial in the context of a multimedia system since multimedia data are very often uncertain and/or imprecise. This work is mainly situated in the framework of the possibility theory-based approach which proves to be best suited to qualitative modeling of imprecision/uncertainty when the imperfection pervading the data is of a subjective nature. In the new approach a condition relates to the representation of values, and, as such, returns a satisfaction degree which is certain.