Reversible Data Hiding in Color Image With Grayscale Invariance

An implement based Python 3.6+ about RDH in Color Image With Grayscale Invariance by Dongdong Hou , Weiming Zhang , Kejiang Chen, Sian-Jheng Lin, and Nenghai Yu

Basic Introduction

• 首先安装所依赖的库python3 install -r requirements.txt
• 其次执行python3 start.py对图像进行加密解密
• 下面是执行时控制台样例输出

[[231 133 116]
  [230 142 111]
  [232 135 111]
  ...
  [226 110  93]
  [221  99  86]
  [212  97  83]]]
=> Finish reading image!
=> Finish calculating predication error!
=> Message: 314159265659314159265659
=> Finish embeding msg with the critical value of ⍴ being 2
=> Finish embeding parameters:
        rhoT: 2, lastEc: 1, La: 193, N: 193, tagsCode: 0000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
=> Finish reading embeded image and calculating predication error!
=> Ensure the grayscale invariant: True
=> Finish extractig parameters:
        rhoT: 2, lastEc: 1, La: 193, N: 193, tagsCode: 0000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
=> Finish extracting received msg: 314159265659314159265659
=> The msg is equal to received msg: True

• 程序会生成并保存灰度对比图Grayscale.png
• 下面是程序加密前后的图片对比，可以看到人眼是很难看出来变化

Implement Details

• Size: 嵌入区域的高宽（左上角算起），默认为None即嵌入整张图片
• fig: 图片地址或名称，默认为'lena.png'
• Dt: 论文中的参数Dt，默认为20
• rhoT: 论文中的参数rhoT
• msg: 嵌入的消息字符串，如'314159265659314159265659'

Others

Motivation: This is the final project of class Information Security Foundation

Stars Wanted: If it can run on your machine, please star this project!