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the files simulates a state of the art method to hide a message in an image. this is based on sardh steganography and has a prominent efficiency.
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基于四叉树分割的JPEG隐写分析
当前主要的隐写分析方法都是对整幅图像进行特征提取，而忽略了图像的内容差异。该文提出一种 基于四叉树分割的 JPEG 隐写分析方法，该方法根据图像块的纹理复杂度进行图像分割，对具有相同统计特性的子图像分别进行隐写检测特征的提取，并构造相应的分类器，通过加权融合得 到最终的检测结果。实验结果表明该方法具有良好的性能，尤其是在训练与测试图像的统计特性具有较大差异时，该算法的检测准确率提高更加明显。
-Based on quadtree segmentat
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基于图像复杂度的隐写方法研究
为了提供较大的隐写容量和保持良好的载密图像质量,依据人眼对纹 理、边界和黑暗区域变化敏感性弱的视觉特点,结合小波变换提出了一种图像复杂度描述方法,将图像小块分为纹理、边界、黑暗和平滑四个不同类别,利用模函数 设计隐写算法,在不同区域嵌入不同量的信息.实验结果表明,新的复杂度描述方法能准确区分不同类型的小块,隐写算法在提高嵌入容量的同时保持了较好的视觉 质量.
-Study steganographic method based on image com
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steganography tools to hide a text file in an image in true,-Steganography tools to hide a text file in an image in true,
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steganography tools to hide a text file in an image in true,-Steganography tools to hide a text file in an image in true,
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Steganography is a branch of information hiding. It allows the people to communicate secretly. Asincreasingly more material becomes available electronically, the influence of steganography on our liveswill continue to grow. Many confidential informat
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steganography tools to hide a text file in an image in true,(Steganography tools to hide a text file in an image in true,)
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实现bmp灰度图像的LSB隐藏，能够将指定的信息嵌入bmp位图的最低位，从而达到数字隐写的目的。另外可以通过相反的过程来读取bmp位图的每一像素的最低位，将信息提取还原出来(BMP gray image LSB hidden, can specify the information embedded in the BMP bitmap of the lowest bit, so as to achieve the purpose of digital steganography. In addi
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matlab code for dwt.i attached here the matlab code for dwt of an digita image.After getting decomposition value,i will use this for steganography purpose.
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Various types of materials and formats can be used as a carrier like magazines, wooden tablets, image, text or an audio/video file.
Images due to their increasing use on the internet and having high redundancy bits are the most popular cover object
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Stegdetect通过统计测试来分析图像文件中是否包含隐藏内容，它运行静态测试以判断隐藏的内容是否存在。此外，它还会尝试识别隐藏内容是通过哪个隐写工具嵌入的。(Stegdetect uses statistical tests to analyze whether the hidden content is contained in the image file, and it runs a static test to determine whether the hidden content
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Steghide is a steganography program that is able to hide data in various kinds
of image- and audio-files. The color- respectivly sample-frequencies are not
changed thus making the embedding resistant against first-order statistical
tests.
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