|Table of Contents|

Image Steganogrphic Algorithm Based on Zerotrees of DCT Coefficients

《南京理工大学学报》（自然科学版）[ISSN:1005-9830/CN:32-1397/N]

Issue:
2008年01期
Page:
50-54
Research Field:
Publishing date:

Info

Title:
Image Steganogrphic Algorithm Based on Zerotrees of DCT Coefficients
Author(s):
SUN Zi-wen; JI Zhi-cheng
School of Communication and Control Engineering,Jiangnan University,Wuxi 214122,China
Keywords:
zerotrees;  discrete cosine transform;  coefficients histograms;  blocking effect;  steganographic algorithm;  robustness
PACS:
TP391.41
DOI:
-
Abstract:
Based on zerotrees of the discrete cosine transform(DCT) coefficients,a novel image steganographic algorithm is presented.By interchanging tow coefficients of middle to low frequency in a DCT domain block,the number of DCT zerotrees is changed.According to the parity of number of zerotrees the secrete message is embeded and extracted.The simulation results show that the steganographic algorithm is robust against JPEG compression,the DCT coefficients histogram can be protected,and the blocking effect can be avoided efficiently,so the algorithm can deffend against χ2-test.The secrete message can be extracted exactly and blindly.

References:

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Last Update: 2012-12-05