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Description: 1.图像频域处理正交变换的matlab实例
2.含有的频域变换内容如下：
正交变换通用算子
傅立叶变换
傅立叶变换的原理
傅立叶性质
二维离散傅立叶变换（ 2DDFT ）
快速傅立叶变换（ FFT ）
傅立叶变换的研究与应用
离散余弦变换
DCT 变换矩阵
dct2 函数和 dctmtx 函数
Walsh- Hadamard 变换
Radon 变换 -1. Image processing orthogonal frequency-domain transform Matlab two examples. Containing the frequency domain transform as follows : orthogonal transformation generic operator Fourier transform theory of Fourier transform two-dimensional Fourier nature of discrete Fourier transform (2DDF T) Fast Fourier Transform (FFT) of the Fourier transform and discrete cosine transform matrix dc t2 function and the function dctmtx Walsh-Hadamard transform Radon transform
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Size: 5616 |
Author: 方周 |
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Description: DCT1实现一维离散余弦变换；
DCT2实现二维离散余弦变换；
其中使用的算法是碟形算法来实现频域变换-DCT1 peacekeeping achieve a discrete cosine transform; DCT2 achieve two-dimensional discrete cosine transform; the use of the algorithm is dishing algorithm to achieve the transformation frequency domain
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Size: 1875 |
Author: cxr |
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Description: 利用蝶形算法类似于FFT，利用先行再列实现二维DCT。速度很快。包含反DCT的代码。-similar to the use of butterfly FFT algorithm, the first re-use of 2D DCT out. Very fast. Contain anti - DCT code.
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Size: 2264 |
Author: yaoli |
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Description: to understand the Algorithm go to matlab help in page dct2 and idct2 to get the mathematical expression
for M = N = 8, we can calculate the most of hard values and save it as LUTs to speed up the execution
now compare our special 8X8 functions with the internal general functions
use this code:
A = int32(100*rand(8,8))
tic for i = 1 : 1000 IDCT_8X8(DCT_8X8(A)) end toc
tic for i = 1 : 1000 idct2(dct2(A)) end toc
i had built the general functions too, but with low speed
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Size: 1180 |
Author: hujik |
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Description: 该程序用于实现h.264中的DCT变换、量化、反DCT变换、反量化 采用了h.264白皮书中介绍的算法-the procedures used to achieve h.264 of DCT, quantization, anti- DCT, quantization using the anti-h.264 White Paper introduced by the algorithm
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Size: 10240 |
Author: 王全明 |
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Description: 1.图像频域处理正交变换的matlab实例
2.含有的频域变换内容如下：
正交变换通用算子
傅立叶变换
傅立叶变换的原理
傅立叶性质
二维离散傅立叶变换（ 2DDFT ）
快速傅立叶变换（ FFT ）
傅立叶变换的研究与应用
离散余弦变换
DCT 变换矩阵
dct2 函数和 dctmtx 函数
Walsh- Hadamard 变换
Radon 变换 -1. Image processing orthogonal frequency-domain transform Matlab two examples. Containing the frequency domain transform as follows : orthogonal transformation generic operator Fourier transform theory of Fourier transform two-dimensional Fourier nature of discrete Fourier transform (2DDF T) Fast Fourier Transform (FFT) of the Fourier transform and discrete cosine transform matrix dc t2 function and the function dctmtx Walsh-Hadamard transform Radon transform
Platform: |
Size: 5120 |
Author: 方周 |
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Description: DCT1实现一维离散余弦变换；
DCT2实现二维离散余弦变换；
其中使用的算法是碟形算法来实现频域变换-DCT1 peacekeeping achieve a discrete cosine transform; DCT2 achieve two-dimensional discrete cosine transform; the use of the algorithm is dishing algorithm to achieve the transformation frequency domain
Platform: |
Size: 2048 |
Author: cxr |
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Description: 利用蝶形算法类似于FFT，利用先行再列实现二维DCT。速度很快。包含反DCT的代码。-similar to the use of butterfly FFT algorithm, the first re-use of 2D DCT out. Very fast. Contain anti- DCT code.
Platform: |
Size: 2048 |
Author: yaoli |
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Description: 对girl图像做二维DCT，并通过对变换后的某些系数置零达到压缩目的-Girl doing two-dimensional images of the DCT, and through certain coefficients transformed to achieve compression purpose of nulling
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Size: 1024 |
Author: shirley |
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Description: Project 2D DCT core - specifications and codes-Project 2D DCT core- specifications and codes
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Size: 10240 |
Author: student |
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Description: 这个是一个基于FPGA的数字图像的整数DCT变换程序，程序高性能地实现了2维DCT变换。-This is an FPGA-based digital image of the integer DCT transform process and procedures to achieve high-performance 2-D DCT transform.
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Size: 418816 |
Author: jyb |
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Description: 数字水印DCT算法设计，可以进行优化，希望大家一起将程序优化-DCT digital watermarking algorithm designe，it can be optimized and I hope that everyone can work together to optimized it.
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Size: 1024 |
Author: Spring |
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Description: 本压缩包包括多种水印代码，其中有DCT1,DCT2,CDMA,LSB等。-The package includes a variety of watermarking compressed code, which DCT1, DCT2, CDMA, LSB and so on.
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Size: 1995776 |
Author: hide |
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Description: 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.
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Size: 1024 |
Author: 马丁 |
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Description: discrete cosine transforms for embedded systems
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Size: 17408 |
Author: kingtut |
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Description: 利用VHDL设计实现了DCT变换，在ISE仿真通过-VHDL designs and implements the use of DCT transform, in the ISE simulation through the
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Size: 7060480 |
Author: 洪依 |
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Description: 本代码是利用matlab实现dct变换，作用后效果可见
-This code is to use matlab to achieve dct transform, the role can be seen after the effect
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Size: 2048 |
Author: 李民 |
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Description: dct2的编程实现，用来压缩灰度图像，需要修改输入的图像名，保持和程序里的名称一致-dct2' s programming is used to compress grayscale images, need to modify the input image name, the name of maintaining and procedures where the same
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Size: 1024 |
Author: 颜洪雷 |
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Description: program matlab for encode jpeg picture using dct2, RLE, and huffman encoding
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Size: 2048 |
Author: Ahmed |
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Description: dct2的变换程序 dct2的变换程序 dct2的变换程序-dct2 dct2 transformation program transformation program transformation program dct2 dct2 transformation program
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Size: 2048 |
Author: jiangpc |
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