| 摘要 |
A device and method for automatically recreating a content preserving and compression efficient lecture video is provided. The device comprises of a computer based video recreating means (3) connected to a video receiving means (2) to an input side thereof and to a video reproducing means (4) at the output side thereof, wherein the video recreating means (3) is designed to split the video into visual and audio data, split the visual data into a plurality of scenes, classify each scene into a number of activity scenes, select activity scenes pre-determined to be critical for preserving the semantics of the lecture video and determine a key frame thereof, recreate the visual data by effecting a time based merger of the key frames of the selected activity scenes, recreate the audio data by removing voiceless data and noise therein and recreate the lecture video by effecting a synchronized time based merger of the recreated visual and audio data.
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