摘要
选择在IVOP的DCT系数中嵌入水印,根据DCT系数的大小关系,采用交换法嵌入比特信息。在水印嵌入时,记录下最近处理过的n个块的DC系数,根据一个用户密钥从这些DC系数生成一个标识码,实现水印的检测。
Choosing imbedding the watermarking in DCT coefficients, according to relative size of DCT coefficient, were using exchange method to imbedding bit information. When the watermark is imbedded, we note n DC coefficient dealt with recently, for producing flag code from on the basis of a user＇s key. Realize to detect watermarking.
出处
《现代计算机》
2007年第2期4-5,8,共3页
Modern Computer
