Description: 提出一种基于统计特性的LSB密写分析方法,这种方法根据密写对原始数据统计特性的影响来判断秘密信息的有无.实验结果给出了不同阈值时的检测性能,当秘密信息量较大时,两类错误概率都可以得到有效控制.-This paper proposes a novel steganalysis technique based on the statistics method for LSB insertion, in which the change of statistical characteristic caused by information hiding is used to judge the presence of secret message. Numerical results show the performance of this developed method with different thresholds and, especially, both kinds of judgment error probability can be effectively controlled with the increase of embedded information. Platform: |
Size: 218112 |
Author:boe |
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Description: 为了提供较大的秘密信息嵌入量和保持良好的载密图像质量,依据人眼对变换剧烈及较暗区域均不敏感的视觉特点,提出了一种基于小波对比度和最低比特位替换(LSB)的图像密写方法.该方法先将载体图像分成固定大小的小块,对每一小块进行小波分解后计算小波对比度.然后,根据该块小波对比度绝对值之和确定该块可以嵌入的位平面层数.最后,采用LSB密写技术逐层嵌入秘密信息.实验结果表明,该密写方法能嵌入较多的信息和保持良好的载密图像质量,并且可直接从载密图像中提取秘密信息.-In order to provide larger capacity of the hidden secret data and to maintain a good visual quality of stego-image,in accordance with the visual property that human eyes are insensitive to edged area and dark area,a novel steganographic method based on wavelet contrast and Least-Significant-Bit(LSB)replacement is presented.First,an image is divided into blocks,and every block is decomposed into one-level wavelet to obtain the wavelet contrast.Then,the number of bit-plane embedded is decided with the s... Platform: |
Size: 263168 |
Author:boe |
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Description: 介绍了一种基于统计特性的LSB密写分析方法,对其进行了改进并提出了可靠估计信息隐藏长度的方法。该方法利用相邻像素相关性定义了统计量,可根据阈值判断秘密信息的有无。对待检测图像进行二次嵌入,根据统计量的变化建立模型,能可靠估计秘密信息隐藏长度。实验表明,估计出的信息量比较准确。-This paper introduces a steganalysis algorithm based on statistics method for LSB steganograhpy and mends it,proposes a method estimating the quantity of hiding data reliably.The method defines statistics using the relativity of close pixels and judges the existence of secret message with threshold.It inserts message in the waiting detected image again,modeles according to the changes of statistics.The model can estimate the quantity of hiding data reliably.Experimental results show the quantity of hi... Platform: |
Size: 1536000 |
Author:boe |
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Description: The project title is modulo based lsb steganography. normal lsb steganography can be breaked by the histogram analysis and statistical analysis. but the modulo based lsb steganography strongly resist agains the steganalysis like histogram and statistical analysis-The project title is modulo based lsb steganography. normal lsb steganography can be breaked by the histogram analysis and statistical analysis. but the modulo based lsb steganography strongly resist agains the steganalysis like histogram and statistical analysis........... Platform: |
Size: 1087488 |
Author:jegaesh |
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Description: 对图像以嵌入率为rate进行顺序LSB嵌入，然后进行卡方隐写分析-Rate on the image to be embedded in the order of LSB embedding rate, and then chi-square steganalysis Platform: |
Size: 1024 |
Author:王先 |
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Description: steganalysis source code to detech whether an image contains hidden message or not using lsb technique Platform: |
Size: 109568 |
Author:sagar |
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Search - LSB steganalysis