计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2015年
7期
1727-1731
,共5页
信息隐藏%隐写%鲁棒性%奇异值分解%矩阵编码
信息隱藏%隱寫%魯棒性%奇異值分解%矩陣編碼
신식은장%은사%로봉성%기이치분해%구진편마
data hiding%steganography%robustness%SVD%matrix encoding
为提高数字图像隐写算法的鲁棒性和透明性，提出一种基于奇异值分解和矩阵编码的图像隐写算法。分析奇异值分解的稳定性，采用EMD （exploiting modification direction）矩阵编码方法，将秘密信息嵌入在将图像块进行奇异值分解所得的奇异值向量中。图像块奇异值的稳定性保证隐写算法的鲁棒性，采用EM D编码算法嵌入秘密信息比特使得算法具有较高的嵌入效率。实验结果表明，该算法嵌入秘密信息后图像失真小，与原始 EM D算法相比，该算法具有更好的鲁棒性。该算法能够很好的应用于噪声环境下的图像隐写技术。
為提高數字圖像隱寫算法的魯棒性和透明性，提齣一種基于奇異值分解和矩陣編碼的圖像隱寫算法。分析奇異值分解的穩定性，採用EMD （exploiting modification direction）矩陣編碼方法，將祕密信息嵌入在將圖像塊進行奇異值分解所得的奇異值嚮量中。圖像塊奇異值的穩定性保證隱寫算法的魯棒性，採用EM D編碼算法嵌入祕密信息比特使得算法具有較高的嵌入效率。實驗結果錶明，該算法嵌入祕密信息後圖像失真小，與原始 EM D算法相比，該算法具有更好的魯棒性。該算法能夠很好的應用于譟聲環境下的圖像隱寫技術。
위제고수자도상은사산법적로봉성화투명성，제출일충기우기이치분해화구진편마적도상은사산법。분석기이치분해적은정성，채용EMD （exploiting modification direction）구진편마방법，장비밀신식감입재장도상괴진행기이치분해소득적기이치향량중。도상괴기이치적은정성보증은사산법적로봉성，채용EM D편마산법감입비밀신식비특사득산법구유교고적감입효솔。실험결과표명，해산법감입비밀신식후도상실진소，여원시 EM D산법상비，해산법구유경호적로봉성。해산법능구흔호적응용우조성배경하적도상은사기술。
A image steganography algorithm based on singular value decomposition (SVD) and matrix encoding was proposed , which improved the robustness and imperceptibility of the data hiding method .After analyzing the stability of the singular value and using the EMD (exploiting modification direction) ,secret bits were embedded into the singular value obtained from the sin‐gular value decomposition of image blocks .The robustness of algorithm is insured by the singular value’s stability ,and the usage of EMD encoding method improves the embedding efficiency of the proposed algorithm .Experimental results show that the algo‐rithm has little embedding distortion ,and it also has better robustness compared with the original method .This method can be well applied in the image steganography in noise environment .
