计算机科学
計算機科學
계산궤과학
COMPUTER SCIENCE
2010年
2期
120-122,130
,共4页
信息隐藏%图像隐蔽通信%广义信息%信息隐藏安全
信息隱藏%圖像隱蔽通信%廣義信息%信息隱藏安全
신식은장%도상은폐통신%엄의신식%신식은장안전
Data hiding%Image hidden communication%Generalized information%Data hiding security
安全性是图像隐蔽通信应用的前提条件.基于香农信息熵和相对熵的安全约束条件还存在不足,隐藏信息不能抵抗利用图像相关性的密写分析.深入分析了图像相邻像素的相关性,给出了基于像素相关的广义信息熵、相对熵和概率分布.提出了广义信息度量的信息隐藏模型,该模型满足隐藏信息的不可检测性,适应于图像隐蔽通信.给出了安全约束条件和信息隐藏方法,并进行了验证实验,给出了实验数据.实验结果表明,该安全模型具有理论和实用价值.
安全性是圖像隱蔽通信應用的前提條件.基于香農信息熵和相對熵的安全約束條件還存在不足,隱藏信息不能牴抗利用圖像相關性的密寫分析.深入分析瞭圖像相鄰像素的相關性,給齣瞭基于像素相關的廣義信息熵、相對熵和概率分佈.提齣瞭廣義信息度量的信息隱藏模型,該模型滿足隱藏信息的不可檢測性,適應于圖像隱蔽通信.給齣瞭安全約束條件和信息隱藏方法,併進行瞭驗證實驗,給齣瞭實驗數據.實驗結果錶明,該安全模型具有理論和實用價值.
안전성시도상은폐통신응용적전제조건.기우향농신식적화상대적적안전약속조건환존재불족,은장신식불능저항이용도상상관성적밀사분석.심입분석료도상상린상소적상관성,급출료기우상소상관적엄의신식적、상대적화개솔분포.제출료엄의신식도량적신식은장모형,해모형만족은장신식적불가검측성,괄응우도상은폐통신.급출료안전약속조건화신식은장방법,병진행료험증실험,급출료실험수거.실험결과표명,해안전모형구유이론화실용개치.
Security is precondition for application of Image Hidden Communication.There is lack of constraint conditions in security based on Shannon information entropy and relative entropy,because of steganalysis by image spatial correlativity.We presented generalized information entropy,relative entropy and probability distribution,by means of analysis for correlativity of adjacency pixels of image.A security model for data hiding based on generalized information measure was proposed.The modeI iS suitable for Image Hidden Communication and the hidden data can't be detected.Security constraint conditions and a method of steganography were derived,and we gave experimental data to verify the model.The experiment results indicate that the security model has values of theory and application.