计算机工程2012，Vol.38Issue(17)：102-105,4.DOI:10.3969/j.issn.1000-3428.2012.17.029
基于图像块像素差的大容量无损信息隐藏算法
High-capacity Lossless Information Hiding Algorithm Based on Pixel Difference of Image Block
摘要
Abstract
A high-capacity lossless information hiding algorithm based on adjacent pixel differences of image block is proposed, which can recover the original image in lossless way after the hidden data are extracted from the stego image. It divides a cover image into a number of non-overlapping blocks, and sequences of pixels are obtained by scanning each image block in a given order. Pixel difference histograms are obtained by calculating adjacent pixel differences in each sequence. And the two maximal peak points in each pixel difference histogram are used to embed secret data. Experimental results show that compared with other lossless data hiding algorithms, the proposed algorithm can achieve large data hiding capacity and high PSNR while keeping image quality of the stego image high.关键词
无损信息隐藏/相邻像素差/最大峰值点/像素差直方图/隐藏容量Key words
lossless information hiding/ adjacent pixel difference/ maximal peak point/ pixel difference histogram/ hiding capacity分类
信息技术与安全科学引用本文复制引用
李晓博,周诠..基于图像块像素差的大容量无损信息隐藏算法[J].计算机工程,2012,38(17):102-105,4.基金项目
国家空间微波技术重点实验室基金资助项目(9140C5303020601,9140C5305020706) （9140C5303020601,9140C5305020706）
