摘要： 该文主要介绍了如何利用离散余弦变换（DCT）实现对于图象文件的数据隐藏技术，详细说明了该技术的基本原理和实现方法，以及对现有算法的改进。并具体描述了如何通过计算机程序实现该算法，使数据隐藏技术能付于实际应用。
关键词:
数据隐藏,
离散余弦变换,
LSB,
掩码,
强壮性,
调制
Abstract: This paper introduces how to use DCT（discrete-cosine transform）in data-hiding technology in image， and its fundamental theory and algorithms, special improvements of existing algorithms. After that, this paper describes how to implement these algorithms by program in detail, which makes the data hiding applicable.
中图分类号:
张璟,刘云超,陈一民,王炜杰. 基于DCT变换的图象中的数据隐藏技术及理论[J]. , 2000, 26(12): 123-125.
ZHANG Jing, LIU Yunchao, CHEN Yimin, WANG Weijie. Data-hiding Technology and Theory in Image Based on DCT[J]. , 2000, 26(12): 123-125.