文档介绍：得分: DCT 域图像隐写方法一、摘要 JPEG 是互联网上最为常见的一种图像格式,而 DCT 变换是 JPE G 压缩采用的重要技术之一,在 DCT 变换系数( DCT 域) 上隐藏信息是常见的数字隐写方式。 DCT ( Discrete Cosine Transform ,离散余弦变换) 是一种实数域变换, 其变换核为实数余弦函数。作为 DCT 变换的方法之一, JSteg 是一种采用 JPEG 图像作为载体的隐写软件,其算法实际上就是将空域 LSB 替换隐写应用到 JPEG 图像上。 Abstract JPEG is the most mon image format on the , and discrete cosine transform (DCT) is one of the important techniques for pression using, hiding information in the DCT coefficient (DCT) mon digital steganography method. DCT (Cosine Transform Discrete, discrete cosine transform) isa real field transformation, and its transformation is real cosine function. As one of the methods of DCT transformation, JSteg isa steganography software which uses JPEG image as the carrier, and the algorithm is actually replacing the spatial domain LSB with the JPEG image. 二、关键词 JPEG DCT JSteg 实数余弦函数三、目录目录摘要............................................ .......... ..... 1 Abstract ........................................ .......... ..... 1 关键词........................................... .......... .... 1 引言............................................. ............ ..2 隐写技术实现............................ ............... 3 JSteg 隐写................................. .............. 3 JSteg 隐写思想........................................... 3 JSteg 隐写过程............................. .......... ..... 3 隐写的盲检测方法.................. ..... ...