ビデオ教材の画像抽出法の検討 : タイムサンプリングによるショット抽出の理論
書誌事項
- タイトル別名
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- Time Sampling of Pictures from Video Programs
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In order to analyze, compare and evaluate a number of educational video programs, it is necessary to have a sampling technique which provides us with samples of representative pictures summarizing the visual information of the programs. Fujita, K. (1989) reported that most shot length distributions of video programs can be described by a compound exponential distribution. On the basis of his previous study, we theoretically estimated the precentage of shots sampled by time sampling with various time intervals. The agreement between the estimated and the oberved values was exceedingly good for all of the 53 educational video programs examined. It was found that for most videos more than 95 % of the shots were sampled by the time samling method with 5-10 second time intervals. A variety of applications of this method to educational and technical use are discussed and demonstrated.
収録刊行物
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- 放送教育開発センター研究紀要
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放送教育開発センター研究紀要 8 137-148, 1993
放送大学
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詳細情報 詳細情報について
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- CRID
- 1050845762674292224
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- NII論文ID
- 110007046374
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- NII書誌ID
- AN10089507
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- CiNii Articles