介绍了一种一般的盲水印方安，它利用周期函数的性质来消除宿主数据对提取水印的影响。经过实验证明是有效地，通用的盲水印方案-This paper presents a blind watermarking Speaking generally, it is the nature of the use of periodic function to eliminate the host data on the impact of watermark extraction. After the expe