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dct.rar
- 已知两个不同图像块亮度数据如下： （1）分析DCT原理，采用DCT方法，编程并计算相应的DCT系数，分析系数分布特点。 （2）依据视觉特性分析量化表步长的分布特点，完成DCT系数量化。 （3）采用Z形扫描，实现输出数据的统计编码，形成Video stream。 （4）采用IDCT重建图像亮度数据，计算SAD大小，分析产生误差的原因及采用DCT进行数据压缩的原理。（ ） （5）分别利用左上角1、3、6个系数重建图像，计算相应的SAD，并由
matlabcodeechohiding
- this the sample of matlab coding for echo hiding data audio steganography... use your own input-this is the sample of matlab coding for echo hiding data audio steganography... use your own input
stegnography
- Data hiding in the still image presets a variety of challenges that arises due to the way human visual system (HVS) works and the typical modifications that image undergoes. Additionally, still images priced a relatively small host signal in which to
stego_in_h264
- 在visual studio2008平台上实现的，h.264视频中的信息隐藏及提取算法-data hiding and extraction algorithm used in h.264 video implemented on Visual Studio 2008 platform
video-encryption-doc
- A Improved Approach of Data hiding In MPEG Encrypted Video based on a Block Based Scrambling method
harendra
- data hiding in image
audio
- this a steganography based program for hiding the info in the image file you can send the data across the network -this is a steganography based program for hiding the info in the image file you can send the data across the network