谱段交织预测的多光谱图像可逆信息隐藏算法  

Reversible data hiding for multispectral image by bands interleaving prediction

作　　者：方海[1] 周诠[1] 

机构地区：[1]中国空间技术研究院西安分院空间微波技术国家级重点实验室,陕西西安710100

出　　处：《计算机工程与设计》2013年第10期3556-3561,共6页Computer Engineering and Design

基　　金：国家重点实验室基金项目(9140C5303020601;9140C5303041002;9140C5305020706);国家"十二五"预研基金项目(41001080205)

摘　　要：针对现有可逆信息隐藏算法嵌入容量不高并且不适合多光谱图像的问题,提出一种基于谱段交织预测的多光谱图像可逆信息隐藏算法。利用含秘图像像素值与原始图像像素值相差不大于1的特点,结合含秘谱段对多光谱图像进行多波段预测,通过预测误差直方图移位技术嵌入秘密信息。Landsat卫星和Terra卫星多光谱图像仿真结果表明,提出的算法和典型可逆信息隐藏算法相比具有更好的视觉质量和隐藏容量。Because existing reversible data hiding algorithm has low embedding capacity and is not suitable for multispectral images,a reversible data hiding method for multispectral images based on interleaving prediction is proposed.For each pixel,the difference value between the stego-image and the original image remains within 1,so,the stego-bands and the original bands are used for multi-band prediction.Then,the secret data is embedded by a histogram shifting mechanism based on prediction errors.Experimental results on multispectral images acquired by Landsat and Terra show that the proposed method has better visual quality and higher hiding capacity than the representative methods.

关 键 词：多光谱图像 可逆信息隐藏 直方图移位 交织预测 多层嵌入 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]