Yoshikazu Tanno

A video metadata application and its verification test using NIPEG-7 description and watermarked content ID

Because of the rapid progress of broadband networks and the rise of digital broadcasting, there is a great demand for creation of an environment for digital content production and establishment of system for smooth content distribution. Yamagata Video Archive Research Center (YRC) has been involved in the development of technology for a large-scale video archive system and in research activities, through various verification tests, for applicable operation of the system. We adopt a MPEG-7 description scheme for constructing retrieval keywords in order to deal with video distribution and to achieve easy content retrieval for users outside of YRC In addition, we use a watermarked unique code (cid) system propounded by the Content ID Forum (CIDF) for managing the content identification number. A part of content ID is watermarked on video itself and a time code, which is extracted from an original tape, is watermarked for editing purposes to keep MPEG picture quality in an edited video stream. We describe the research through tests from content retrieval to content distribution.

A PROPOSAL OF THE MULTIMEDIA ARCHIVE SYSTEM WITH WATERMARK INDEX FOR PREVENTION OF DISASTERS

ABSTRUCT According to the rapid expansion of the digital broadcasting and networks, the large scale contents creation and multimedia archives are eagerly discussed. Multimedia database or archives are very useful not only the entertainment but also the social security or prevention of disasters such as the records of earthquake or typhoon etc. In such database the retrieval method and preservation of the explanation to the situation related to the recorded video are highly important. Here we introduce the large scale archive system, the retrieval interface and index format with watermark and Mpeg-7 metadata to apply the prevention of the disaster database. And also the information security on the system, based on ISO17799 recommendation, will be discussed briefly.

Petabyte-class video archive system with large-scale automatic tape feed robot

In order to supply a volume of digital video content in the digitalization of broadcasting, it is necessary to realize a method of storing a large number of videos and of high-speed content retrieval. This paper describes a petabyte (1015 power) large-capacity video archive system and its retrieval method. The archive system employs an automatic magnetic tape feed robot that can accommodate 7200 tapes (15,000 hours) in its center, and an HDD server and a DVD server respectively for each purpose, thus making the efficiency of storage and distribution better and realizing retrieval, video delivery, and remote editing from remote sites. Further, a method of detection of scene change points in a video sequence, a method of browsing video production based on the detected scene change points, and a method of visual retrieval by simultaneous playback representation of multiple videos on a screen are also included. In this paper, a large-scale archive system that has an automatic tape feed robot at its center and a high-speed and efficient method of retrieval of the target video using the real-time playback representation of multiple videos are presented.