A method for compressing movie by black out background.
Publication Date: 2016-Jul-26
The IP.com Prior Art Database
This is a method to improve compressing ratio by black out backgournd of frame of movie.
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A method for compressing movie by black out background. This invention is related to compressing movie.
Movie is made from multiple frames. There are two type of compression to reduce movie file. One is compression each frame. Another is compression by using difference of neighbor frame.
Recently, a digital video camera can detect a human face, focus to the face and control brightness for it. Even if there are multiple people, it can detect each face and specify a people who is registered beforehand.
For video surveillance, digital camera is used. Especially, when a user keep movies of multiple video surveillance cameras for a longtime, huge storage is required. On the other hand, it is not realistic to spend a lot of money for the storage because the movie does not produce a profit. Though we can reduce movie file size by decreasing resolution, it is too hard to detect a person in the frame to decrease resolution. That is the problem solved by our invention.
At compressing movie, we improve compression ratio without decreasing resolution where there is a person by segmenting a part of the frame.
The embodiment of this invention is below.
When a movie is stored into a storage, we improve compression ratio by segmenting a part of frame which include a person.
Fig. 1 Embodiment to segmenting a part of frame which include a person.
Fig. 2 Embodiment to black out background.
We can apply the method during shooting a movie. We can also apply the method after shooting...