Video Watermarking Scheme Based on Key Frames
Zhang Wenming · Computer Knowledge and Technology · 2010
For copyright protection,modern techniques of video watermark embed the watermark into all frames which increases the embedding burden.In order to reduce the waste of resources and improve the efficiency of watermark embedding,this paper presents a new techinique for embedding the watermark into key frames of a video.In this method,PCA is applied to obtain the main features of frames and the key frames are extracted after clustering.Lastly,the watermark is embedded into those key frames.This algorithm is simple and easy to be implemented.Experimental results show that it can greatly improve the speed of embedding with the better robustness of the watermark.