摘要： 提出一种在彩色图像中新的无损数据隐藏算法。首先对RGB图像直方图调整分别压缩灰度动态范围。然后进行整数YUV变换和Y分量整数小波变换。最后通过算术编码和哈希变换,将待隐藏信息连同压缩灰度动态范围剩余数据,嵌入小波高分辨率子带的中间位平面内,达到小波反变换时防止溢出的目的,实现无损数据隐藏。文中用6个通用的图像隐藏数据为例,嵌入数据容量达到19-73kbits。将该方法用于电子政务中,取得了良好的效果。

关键词: 无损数据隐藏, 整数小波, 直方图调整, 彩色图像

Abstract: This paper presents a novel reversible data hiding technique to hide data in color image.First,a histogram modification is used to compress the color range of image.Then reversible color convertion transformation is used to decorrelate the dependence among different color components,and in the luminance component data is embedded based on integer wavelet transformation.Results show that this technique could embed 19-73k bits into 512 512 color image The application of this technique in e-government has achieved great success.

中图分类号: 

• TP391.4