搜索资源列表
Loeffler_dct.rar
- JPEG dct快速算法,实现8X8到4X4,以及8X8到2X2等DCT变换,快速实现降采样。,JPEG dct fast algorithm 8X8 to 4X4, and 8X8 to 2X2, such as DCT transform, rapid down-sampling.
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.
RGB_DCT.rar
- 对RGB颜色空间的彩色图像进行DCT变换,其中可保留任意的变换系数,且可根据需求改变量化步长,RGB color space for color image DCT transform, which may retain any of transform coefficients, and can be quantified in accordance with step changes in demand
piccompress.rar
- 图像压缩编码,dct变换,量化, Z字形扫描 行程编码,Image compression, dct transform, quantization, Z-shaped scan length encoding
DCT
- 实现对一幅灰度和彩色图像作的离散余弦变换,选择适当的DCT系数阈值对其进行DCT反变换.-The realization of a piece of gray and color images for the discrete cosine transform, select the appropriate thresholds for DCT coefficients of its inverse transform DCT.
a
- 用MATLAB编写的DCT变换程序,包括快速DCT变换,内含测试文件lena256.img-DCT transform program using MatlaB
dct
- DCT变换和DCT反变换大全,提供多种DCT算法的实现,可用于图像和声音处理。-DCT and IDCT package, supplies lots of DCT and IDCT algorithm, very useful to image and audio processing
MATLAB
- dct变换 高通滤波 并带有原始图像 对于图像处理的初学者很实用-dct transform
19854796watermarking
- 武汉大学信息隐藏实验实现源代码 各种隐藏算法dct变换,小波变换,MD5算法等-Wuhan University Experimental realization of information hiding all kinds of hidden algorithm source code dct transform, wavelet transform, MD5 algorithm
YUVdct
- YUV序列打开,DCT变换,IDCT变换、量化、反量化等操作-YUV sequence of open, DCT transform, IDCT transform, quantization, inverse quantization operation
DCT
- 基于visual c++对图像进行DCT变换的编程-Based on visual c++ Image DCT transform programming
dct
- 利用DCT进行图像压缩(首先将图像分割成8×8的图像,对每个子图像进行DCT,这样每个子图像有64个系数,舍去50%小的变换系数,进行2:1的压缩。)-The use of DCT for image compression
imageview
- 图象处理程序,提供了图象直方图均衡,robert,sobel,prewitt,kirsch,gauss等方法的边缘检测运算,中值滤波,二维FFT变换和DCT变换,图象的反转,旋转等一些基本的图象模板变换和点变换的功能。目前只处理256*256的图象-Image processing procedures, provided the image histogram equalization, robert, sobel, prewitt, kirsch, gauss edge detection
signal-analysis
- dctcom.m文件利用DCT变换完成对输入图像进行压缩;imagecbe.m完成对输入的两幅RGB图像用小波分析的方法进行图像融合 imagecom.m完成对输入的RGB图像用小波分析的方法进行自动降噪,得到高频系数阈值,降噪效果百分比和结果 wavelet1D.m完成对输入的一维信号进行多尺度离散小波分解 wavelet2D完成对输入的二维信号进行多尺度离散小波分解;zigzag.m完成对输入的8*8矩阵按照zigzag排列抽取数据.-document the use of DCT tran
informationhiding
- 一个基于DCT变换的信息隐藏程序,能把文本信息隐藏到经过DCT变换的图像载体的频域中去。程序重点在于对图像的DCT变换-DCT-based Information Hiding Transform procedures, able to hide text message into image after DCT transform domain to the frequency vector. Procedures focus on the DCT transform of image
Ten
- 第十章 MATLAB 图像正交变换 10.1 正交变换通用算子 10.2 傅立叶变换 10.2.1 傅立叶变换的原理 10.2.2 傅立叶性质 10.2.3 二维离散傅立叶变换( 2DDFT ) 10.2.4 快速傅立叶变换( FFT ) 10.2.5 傅立叶变换的研究与应用 10.3 离散余弦变换 10.3.1 DCT 变换矩阵 10.3.2 dct2 函数和 dctmtx 函数 10.4 Walsh- Hadamard 变换
MATLABDCT
- 基于MATLAB的DCT变换在jpeg图像压缩中的应用-MATLAB-based DCT transform in the jpeg image compression
Watermarking_althorithm_based_on_DCT(MATLAB)
- 基于DCT变换的水印图像水印算法源代码(matlab实现)。将文件解压缩到MATLAB安装目录下的work文件夹中,然后打开aaa.m文件,运行即可。-Based on the DCT Transform Watermarking Image Watermarking Algorithm source code (matlab achieve). Extract the file to the MATLAB installation directory under the work folder
Ssemple
- 水印程序,dct变换,水印的提取和嵌入功能,并且和mapX结合-Watermarking procedures, dct transform, extraction and watermark embedding function, and combining and MapX
dct
- dct变换 先进fft变换,然后再利用fft进行dct变换,是基于win32平台的-DCT transform fft transform advanced, and then use fft for DCT transform, is based on the win32 platform