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.
Indian patent application no. 386/MUM/2009 Patent grant no.
Inventors: Subashis Chaudhuri, Ranjith Ram A, Trupti N Thete
The video is shot detected and recognized for content and
non-content shots, the content frames followed full a clear
full-page writing, tracked for current pen-position while
writing, good quality key frame detected, skew eliminated,
frame is super-resolved (if clarity demands), played in
synchronization with audio, key-hole animated at client site.
The method is fully automated! Data size is massively
compressed due to non-sending of video (at least a factor of
10-15), streaming is possible. 3 patents already filed, and
product is copy-protected. Most of the media size is now due
to audio only (about 90-95%) due to choice of mp3 player. Can be
further reduced by selecting more efficient audio-codec.
To know more visit the link below:www.ee.iitb.ac.in/~lec-to-mobile