搜索资源列表
dctrecover
- 对嵌入水印的图像进行DCT变化再进行水印提取,用于图像加密,保护版权,在版权保护方面有较大的用途。-Digital Watermarking DCTrecover
BwAdd_Y_ColorImage
- matlab程序添加水印的DCT算法,先将水印加密,然后嵌入图像中-matlab program to add a watermark in the DCT algorithm, first the watermark encryption, and embedded images
MATLABimagecompression
- 共7个matlab程序及两幅原始待处理图像,功能是图像压缩的实验,分别运用了DCT(1个程序),小波变换(5个程序)和小波包变换(1个)对图像进行压缩,各个程序的作用及程序注释已在程序中做了详细说明,程序均可直接运行-matlab program for image compression ,using DCT wave,wavelet,wavelet packet methods respectively .
embed
- 图像置乱后嵌入音频中,用于dct域的音频水印处理-After scrambling embedded audio, audio for the dct domain watermarking
ImageProcessing
- JPEG图像压缩标准MATLAB仿真程序。包括DCT变换及其逆变换、量化及反量化等过程。-JPEG image compression standard MATLAB simulation program. Including the DCT transform and its inverse transform, quantization and inverse quantization and other processes.
DCTtransformation
- DCT变换的基本思路是将图像分解为8×8的子块或16×16的子块,并对每一个子块进行单独的DCT变换,然后对变换结果进行量化、编码-The basic idea is to transform DCT the image is decomposed into 8 × 8 sub-block or 16 × 16 sub-blocks, and each separate sub-block DCT, and then quantify the results of the transform c
jpeg_compression_encode
- jpeg图像压缩编码程序,图像的DCT变换是调用Matlab自带的DCT变换函数dct来完成-jpeg image compression coding process, DCT transform is called the image that comes with Matlab DCT dct to complete the transformation function
DCTchange
- matlab中的dct变换,在图像中利用dct变换嵌入水印,并提取-The dct matlab transformation in the image watermarking using dct transform, and extract
signature
- 该目录包含了基于可移植的C语言的数字水印算法的代码。这些代码具有示范 性的意义,且有一定的鲁棒性。 需要安装NetPGM的程序包(用来存取pgm格式图像),然后才能在linux下面编译。 NetPGM是图像文件的输入/输出软件包。可以在网上搜索得到。我们已经对 256灰度级,512×512大小的图像进行了测试。程序编译后的调用格式如下(以encode为例): wm_cox_e -s cox.sig -o wm_image.pgm image.pgm 其中,-s表示要
matlab_watermark
- 本文算法是将24 位真彩图的亮度分量分块 DCT ,然后利用DCT 量化系数的奇偶特性嵌入8 位灰度水印图,并通过PN 序列加密来保证水印的 安全性。算法中,将灰度图像转换为二进制数据 流,置乱后扩频调制,隐藏在宿主DCT 系数量化值 中,提取时不需要宿主信号,实现水印信号的盲提 取。-This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantiza
3
- 编程实现图像DCT高通、低通滤波器并与傅立叶变换做比较-Programming image DCT high pass, low pass filter and compared with the Fourier transform
Robust-Watermarking-Based-on-DCT
- 基于DCT域的鲁棒水印,上数字图像处理课上的大作业-Robust Watermarking Based on DCT, the homework of digital image processing
sy1_4
- 读取图像lena.tif,进行DCT变换,每个图像块保留10个DCT系数进行重构图像,比较重建图像与原始图像的差异。-Read the image lena.tif, the DCT transform, each image block of 10 DCT coefficients to retain the reconstructed image, reconstructed image compared with the original image differences.
JPEG_main
- JPEG压缩编码算法函数编程实现 子块DCT变换的图像频谱显示;8×8子块DCT变换系数按“Z”(Zig-Zag)扫描的图像重建; JPEG压缩编码(进行8×8子块的DCT图像变换,JPEG量化矩阵的量化与反量化,8×8子块DCT的图像重建); 计算图像的均方根误差 、显示误差图像和误差直方图。-failed to translate
DCT
- DCT-离散cos变换。数字图像处理相关知识。-DCT-Discrete cos transformation. Knowledge of digital image processing.
exa080903_LOT_1D
- 利用子程序fast-lot.m,实现对该图像的变化及压缩,并和以为信号做dct后的图像质量相比较。-Using subroutine fast-lot.m, to achieve the changes and compression of the image, and after, and that the signals do dct compare the image quality.
DFT-DCT
- 基于VC++的图像的DFT变换和DCT变换,并可实现两者间的对比转换-VC++ based on the image of the DFT transform and DCT transform, and to achieve the contrast between the two conversion
2
- matlab开发数字水印DCT与DWT(基于小波变换的静态图像数字水印方法研究)-development of digital watermarking matlab DCT and DWT (wavelet-based method for watermarking of still images)
DCT
- JPEG标准中规定了4种压缩模式[15]:顺序编码(Sequential encoding),渐进编码(Progressive encoding),等级编码(Hierarchical encoding),无损编码(Lossless encoding)。应用最为广泛的为基于DCT变换的顺序编码,也称之为基准模式(Baseline mode),其它几种模式都以此为基础。这里,采用了JPEG基准模式对图像进行压缩,在基准模式中,熵编码采用哈夫曼编码方法。 -JPEG standard specif
DCT
- 用MFC对一个视频或者图像进行DCT变换-With MFC or image on a DCT-video