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LSB和dct信息隐藏的MATLAB实现
- 实现了LSB信息隐藏和dct域信息隐藏
基于dct离散余弦变换的matlab音频水印
- 基于dct离散余弦变换的matlab音频水印添加源代码。
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程序实现文档
- dct变换-dct transform
dct
- 利用matlab实现基于dct变换的变焦距图像融合-Using matlab to achieve dct-based image fusion Zoom
dct
- dct变换，给出了dct变换的函数，使用时只要把该文件包含即可使用。-dct transformation, has produced the dct transformation function, when the use so long as contains this document then uses.
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
dct
- 将图象分块(8*8)，作dct变换，并作Idct：dct是一种可分离图象变换，用来图象压缩编码，Idct用来解压缩。-The image sub-block (8* 8) for the dct transform, and to make Idct: dct is a separable image transformations, is used to image compression coding, Idct is used to decompress.
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
- code for dct for image processing
dct
- 一个有关dct的matlab程序，采用分块的思路-dct-a matlab program, the idea of using block
dct
- dct变换是图像图形处理中的很重要的一个压缩算法，此文件详尽的完成了dct变换-dct transform is image and graphics processing is very important to a compression algorithm, this document contains details of the completion of the dct transform
dct
- 本文设计基于dct的人脸识别系统，首先结合当今人脸识别的背景和发展状况讨论了人脸识别的研究内容及在各方面的应用；然后研究了人脸识别进行预处理，讨论了人脸识别预处理的其他方法，分析各种方法的利弊，最后采用dct（离散余弦变换）实现人脸图像预处理中的降维处理；接下来对人脸图像的特征提取进行了研究，简单叙述了几何特征提取和代数特征提取，同时深入研究了基于dct和PCA变换的人脸图像特征提取，从而实现是否对人脸识别系统识别率有所提高的研究；对于分类器的选择，本文对两种分类器进行了探讨，即最近邻分类器和B
dct
- 对测试图像分块、dct和量化，将量化后的系数写成矩阵形式。-The test image block, dct and quantization, the quantized coefficients written in matrix form.
dct-dwt
- dct dwt for watermarking
dct
- 读入一幅256*256图像，将它分成8*8pixel的若干块，对每块做dct变换，保留Z型顺序的若干变换系数，进行Idct重构图像，计算重构图像的信噪比-Reading a 256* 256 image, it will be divided into several blocks of 8*8 pixel, keep each optimal Z transformation of sequence number, Idct transform coefficient calculation
dct
- 用matlab实现的灰度图像dct变换的源程序。-Matlab implementation of the gray image with dct transform of the source.
dct
- 基于dct域数字图像水印的MATLAB实现-dct domain based on MATLAB implementation of digital image watermarking
dct
- 实现了彩色图像上的dct变换和dct反变换-Color image on the realization of the dct transform and inverse transform dct