Encoder/Decoder for Privacy Protection Video with Privacy Region Detection and Scrambling

Privacy region scrambling is an effective method to protect privacy information in videos. In this paper, we present an encoder/decoder system for privacy protection video. On the encoder side, the privacy region in video is automatically extracted and scrambled while encoding. On the decoder side, users can exactly restore the original video with a legitimate key otherwise only non-privacy part can be decoded correctly but the privacy regions are encrypted.