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1.了解离散傅立叶变换及离散余弦变换的基本原理;
2.掌握进行FFT及逆变换的方法;
3.了解图像在频域中处理方法,应用MATLAB语言作简单的低通滤波器。
-1. Understand the discrete Fourier transform and discrete cosine transform the basic principle; 2. master for FFT and inverse transform; 3. understanding of image p
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用VC实现的一幅图像的快速离散余弦变换程序,同时也给出了普通离散余弦变换的程序,以方面对比,给出了变换后的图像,以及相应的离散余弦反变换。-with VC image of a fast discrete cosine transform procedures, We also discuss the discrete cosine transform ordinary procedures, respect contrast, is the transformation of images,
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有关数字图像处理中的傅立叶变换、小波变换、沃尔什变换、基于特征向量的变换、离散余弦变换等图像的正交变换-the digital image processing of Fourier transform, wavelet transform, the Walsh transform, Based on the eigenvector transform, discrete cosine transform image orthogonal transformation
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簡單的8*8 DCT(Discrete Cosine Transform)
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oJPEG2000中DWT的MATLAB实现n the use of discrete cosine transform DCT jpeg compression Matlab source, simple and practical, the Notes have a good time
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Image Compression
A collection of simple routines for image compression using different techniques.
图象压缩的不同方法
BTCODE:
Image compression Using Block Truncation Coding.
PYRAMID:
Image compression based on Gaussian Pyramids.
DCTC
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离散余弦变换(Discrete Cosine Transform,简称DCT变换)是一种与傅立叶变换紧密相关的数学运算。在傅立叶级数展开式中,如果被展开的函数是实偶函数,那么其傅立叶级数中只包含余弦项,再将其离散化可导出余弦变换,因此称之为离散余弦变换。
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常用的小波变换、傅立叶变换、离散余弦变换、图像旋转、平移、缩放类模块,用户只需运行时只需调用相应的模块,这是我从我们开发的系统中剥离出来的类模块,供大家使用,希望大家能喜欢!-commonly used wavelet transform, Fourier transform, discrete cosine transform, image rotation, translation, scaling type module, users can run only when the corre
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Image Compression
A collection of simple routines for image compression using different techniques.
BTCODE:
Image compression Using Block Truncation Coding.
PYRAMID:
Image compression based on Gaussian Pyramids.
DCTCOMPR:
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Analysis of blind data hiding using discrete cosine transform phase modulation。
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一系列展示图像压缩技术的源代码。包括有:使用块截断编码的图像压缩(Block Truncation)、基于高斯金字塔变换的图像压缩(Gaussian Pyramids)、基于离散余弦变换对图像压缩(Discrete Cosine Transform)、基于奇异值分解(SVD)的图像压缩(Singular Value Decomposition)。给出的代码还可以用于2D图像噪声消除
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dct,离散余弦变换汇编原代码-Extra, discrete cosine transform the original code compilation
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IDCT 反离散余弦变换原程序-IDCT inverse discrete cosine transform the original procedure
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一种对图像进行离散余弦变换处理的源代码-images of a pair of discrete cosine transform the source code
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图像压缩的几个MATLAB算法:分块编码、高斯金字塔、离散余弦变换、单值分解。-Image Compression Algorithm several MATLAB : Block Coding, Gaussian pyramid, discrete cosine transform, singular value decomposition.
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计算机图象处理,图象压缩处理,图像压缩的几个MATLAB算法:分块编码、高斯金字塔、离散余弦变换、单值分解。-computer image processing, image compression, image compression algorithm several MATLAB : Block Coding, Gaussian pyramid, discrete cosine transform, singular value decomposition.
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vc++编程实现图像的傅里叶变换、离散余弦变换和沃尔什变换。,vc++ Programming image Fourier transform, discrete cosine transform and the Walsh transform.
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该源码提供了二维傅立叶变换、离散余弦变换,The source provides a two-dimensional Fourier transform, discrete cosine transform
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matlab实现二维离散余弦变换的图像压缩程序,可以学习一下,matlab implementation of two-dimensional discrete cosine transform image compression process, can learn about
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基于离散小波余弦变换DCT的数字水印算法,实现了水印的嵌入提取等过程。毕业设计源代码,Discrete Cosine Transform Based on Wavelet Digital Watermarking Algorithm in DCT, the watermark embedded in the realization of the process of extraction. Graduation Project source code
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