Hierarchical organization for video annotation

The omnipresent multimedia data calls for efficient and flexible methodologies to annotate, organize, store, and access video resources. Video annotation data, or video meta-data, plays an important role in the future annotation-driven video systems. Although the importance of the video annotation data is widely recognized and a considerable amount of research has been conducted on its various aspects, there is no consistent framework on which to structure video annotation data. In this paper, we have focused on investigating the nature of the video annotation data, and accordingly proposed one hierarchical structure for video annotations. Additionally, we have studied the techniques needed to hierarchically organize video annotations and proposed VideoML - an XML-based language - to organize the hierarchical video annotation data. VideoML is built upon the video part of MPEG-7 with special consideration of the video annotation data's hierarchical structure