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DCT分块图像数字水印
- DCT分块方法嵌入数字水印极其各种攻击方法的检测及对比，MATLAB程序详细整齐！！
8*8矩阵dct变换以及量化 反量化和反dct变换
- 8*8矩阵dct变换以及量化 反量化和反dct变换,8* 8 transform and quantization matrix dct quantization and anti-anti-dct transform
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
DCT.rar
- 利用matlab的DCT2函数，对图像做变换并压缩。并用8*8对图像分块，对每一块计算均方值作为阈值。,DCT2 use the matlab function, and transform the image so compressed. And 8* 8 image block, a calculation of each mean square value as a threshold.
klt-dct.rar
- klt经典程序，可以在matlab里面直接运行,KLT classical procedures, can be run directly in matlab
DCT
- 用matlab对一张图片进行DFT变换，DCT变换,比较保留20个DCT变换系数重构的图象与原始图像的差别.-Using matlab on a picture to DFT transform, DCT transform, compared to 20 DCT transform coefficients to retain the image reconstruction of the difference between the original image.
dct
- 这是用matlab写的dct代码用于图像的信息的隐藏和提取。。部分老师写的哦。-This is used to write the DCT matlab code for the image and extract the hidden information. . Oh part of the Writing Teacher.
DCT
- 基于Matlab GUI的图像的DCT，自由调节压缩率，计算峰值信噪比，并图形化对比还原图像-Matlab GUI for image-based DCT, freely adjust compression rates, the peak signal to noise ratio, and reduction of image contrast graphic
JPEG-DCT
- JPEG中DCT 变换在 matlab中的实现 相当简便-JPEG in the DCT transform in matlab in the realization of a very simple
dct
- 基于dct变换,能实现数字水印嵌入与提取-Based on the DCT transform, to achieve the digital watermark embedding and extraction
DCT
- DCT余弦变换编码，处理效果还是不错的-DCT cosine transform coding, the treatment effect is still good
dct
- 基于matlab编写的dct数字水印程序，文件包括有源程序以及简单的说明等-DCT matlab prepared based on digital watermarking procedures, documentation, including source code, as well as simple descr iptions
dct
- 利用DCT变化对tif图像进行压缩利用DCT变换进行图像压缩的MATLAB程序-Changes in the use of DCT compression of tif images using DCT transform image compression MATLAB program
DCT-MATLAB
- DCT变换的实现，快速变换IDCT实现，VC工程-The realization of DCT transform, fast transform IDCT realization, VC works
DCT
- 在MATLAB里，基于dct域,实现在二维图像中嵌入数字水印 并提取。-In MATLAB, the dct-based domain, the realization of two-dimensional images in the digital watermark embedding and extraction.
DCT
- Compress an decomprres DCT=Domain Transform Coding for image.
DCT
- DCT数字图像水印算法的源代码！含有图像的水印的嵌入和水印的提取！-DCT digital image watermarking algorithm source code! Containing the watermark image watermark embedding and extraction!
matlab
- 基于MATLAB的数字水印技术研究 关键词：数字水印 Matlab Visual C++6.0 DWT DCT -MATLAB-based digital watermarking technology research Keywords: digital watermarking Matlab Visual C++6.0 DWT DCT
DCT-SVD-Algorithm
- 基于DCT的SVD算法，对于几何攻击有很强的鲁棒性-DCT-SVD algorithm, robustness on geometry attack
dct
- 针对给定的静止图像进行DCT 变换 给定不同的阈值及将数据块中不同位置的值置为0所得到的不同情况下压缩-For a given static image DCT transform a given threshold and a different data block at different positions of a value of 0 has been compressed under different circumstances