A Secure Fragile Video Watermarking Algorithm for Content Authentication Based on Arnold Cat Map

This paper presents a fragile watermarking algorithm in spatial domain to authenticate integrity of the video digital content. The watermark is a binary image and it has been replicated so that has the same size with frame size of the video. To increase security, before embedding, the watermark is encrypted by XOR-ing it with a random image. The random image is generated by using a chaos map, i.e Arnold Cat Map. The encrypted watermark is embedded by modifying pixel values of video frames. Some attacks has been done to the watermarked video. Experiment results show that the algorithm can detect and localize the modified region of video frames very well.