Aiming at the single function problem in single-watermarking algorithm, we propose a dual video watermarking method which is based on DWT and DCT. It realises dual purpose of video copyright and integrity authentication by embedding robust watermarking and fragile watermark. This method makes good use of the means including DWT and DCT and multiple embedding, etc. to embed two different watermarking into same video sequence in succession. The fragile watermarking embedded later is to serve the robust watermarking embedded earlier. Experimental results demonstrate, this method can protect the copyright of the video information effectively, and is also able to resist some common attacks for the purpose of tampering-prevention, and has fairly good robustness and invisibility.%针对单水印算法存在功能单一的问题,提出一种基于DWT和DCT的视频数字双水印方法,通过嵌入鲁棒性水印和脆弱性水印实现视频版权和完整性认证的双重目的.利用DWT和DCT变换、多重嵌入等方法,在同一视频序列中先后嵌入两种不同类型的数字水印,后嵌入的脆弱性水印服务于先嵌入的鲁棒性水印.实验结果表明,该方法不仅能有效地保护视频信息的版权,还能抵抗一些常见攻击,以达到防止被篡改的目的,具有较好的鲁棒性和不可见性.
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