Efficient and Flexible Metadata Authoring Tool for Multimedia Contents

초록

The progress of information technology has increased the demand of digital contents along with the proliferation of communication and multimedia. Video data of digital contents such as VOD (video on Demand), Digital Library, IPTV (Internet Protocol Television), and UCC (User Created Contents) are getting more spread in various application fields. Video data have sequential characteristic besides providing the spatial and temporal information in its 3D format, making searching or browsing ineffective due to long turnaround time. In this paper, we present ATVC (Authoring Tool for Video Contents) for solving this issue. ATVC is a video editing tool, which detects key frames using visual rhythm and inserts metadata such as keywords into key frames via XML tagging. Visual rhythm is applied to map 3D spatial and temporal information to 2D information. Its processing speed is fast because it can get pixel information without transformation such as IDCT (Inverse Discrete Cosine Transform), and it can classify edit-effects such as cut, wipe, and dissolve. Since XML data save key frame information via XML tags and keywords information, our system can provide an efficient object-based retrieval or content-based retrieval for video databases in Web 2.0 environments.

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