摘要
本文主要针对图像经过DCT变换后能量"高度集中"的特性,实现一个信息隐藏算法的应用,在VC环境下编程实现将一张二值图像隐藏在一张灰度图像中。算法的核心是利用载体DCT域的系数中两个特定数的相对大小来代表隐藏信息。
This paper mainly implements an information - hiding algorithm based on the fact that after DCT transformation, images will be ＂highly energy concentrated＂. It hides a binary image in a gray - scale image by programming in the VC environment. The core of the algorithm is that the values of two specific numbers in the DCT coefficient represent the hidden information.
出处
《攀枝花学院学报》
2010年第6期26-31,57,共7页
Journal of Panzhihua University
关键词
信息隐藏
DCT变换
相对大小
information hiding
DCT transformation
relative value
