Method for allocating number of Key-Frames for a shot of video stream

摘要

The present invention relates to a key frame number assigned to the video stream, and more particularly to a key frame number assignment method for taking into account the shot scene changes in a video stream of the shot stream so that an appropriate key frame number can be assigned.; Relative to the conventional key frame number assignment method for a shot of the video stream is accumulated difference between adjacent frames of each shot of the key frame number for each shot was accumulated the difference between adjacent frames in shot units (Cumulative inter-frame difference) this method is common to assign to. Therefore, the number of the conventional key frame allocation scheme is adjacent only it is based on the image difference between the frames, because shot overall information is a small number of frames of alternating since it is difficult to reflect a large number of key more than necessary with respect to the displayed shot of a case of assigning a frame is generated.; The present invention is shot in shot representing the overall appearance of the video stream, proposed the concept of a histogram, and these shot-histogram and Cumulative (difference sum accumulated average shot histogram difference between the color histogram for each frame Average Shot-histogram Difference ), the calculated is for the following proportion to the key by providing a method of allocating the number of frames, shot whole scene by using the key-frame allocation method considering the change in allocation as appropriate the number of keyframes for each shot of a video stream of this .