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Description: pca,用在人脸特征识别中,fisher线性判别
kpca,dwt2-pca used in facial recognition, fisher linear discriminant kpca, dwt2
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Size: 1129436 |
Author: verochen |
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Description: 我自己写的小波变换，有低频系数图像，水平高频图像，垂直高频图像，希望对大家有帮助
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Size: 1442 |
Author: 刘雪 |
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Description: pca,用在人脸特征识别中,fisher线性判别
kpca,dwt2-pca used in facial recognition, fisher linear discriminant kpca, dwt2
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Size: 1129472 |
Author: verochen |
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Description: 这是个小波变换的matlab程序,里面很全,对于初学者很有帮助-This is a wavelet transform matlab program, which is very wide, very helpful for beginners
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Size: 2048 |
Author: kevin |
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Description: 我自己写的小波变换，有低频系数图像，水平高频图像，垂直高频图像，希望对大家有帮助-I wrote it myself wavelet transform, there are low-frequency coefficient images, the level of high-frequency images, the vertical high-frequency images, we hope to help
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Size: 1024 |
Author: 刘雪 |
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Description: 最低有效位嵌入水印的matlab程序，比较基础的，希望对给位有用。-Least significant bit of matlab watermark embedding process, the basis of comparison, in the hope that useful to the bit.
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Size: 4096 |
Author: 杨霞 |
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Description: wavelet based watermarking with dwt2 function in matlab it s an implementaton of an ieee paper.its a visible watermark it calculates the peak signal to noise ratio and the mean square error
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Size: 1024 |
Author: peed |
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Description: 本文提出了一种基于独立分量分析的音频数字水印方法。嵌入水印时,对原始音频文件进行一级小波分解,在分解
得到的逼近分量中利用随机混合方法嵌入水印后进行小波逆变换形成嵌入水印的音频文件。仿真实验结果表明这种方
法的强鲁棒性和可行性。-Abstract:Audio p roduction is one of the important digital multimedias, which transmit becomes more and more convenient. To
p revent the multimedia content from being stolen or illegally used, audio content p rotection techniques become increasingly impor2
tant so that the potential of these app lications can be reached. As the importantmethod of copyright p rotection, the digitalwater2
marking technology has been acquired widely recognition and research. This paper p resents a method of digital audio watermark2
ing based on independent component analysis. When embedding watermarking, the original audio is decomposed by single2level
discrete 12D wavelet transform, watermarking is embedded by mixing randomly to the app roximation coefficient vector obtained,
and the audio is single2level reconstructed receiving audio havingwatermarking. Emulated experiment results show that thismeth2
od is robust and feasible.
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Size: 184320 |
Author: 韩永龙 |
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Description: 本程序是离散小波变化的一级小波分解，图像效果图为本人亲自所作！-DWT
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Size: 274432 |
Author: 代江艳 |
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Description: 对源图像进行二维离散小波变换，使其适用于数字水印等进行加密处理-Two-dimensional images of the source of discrete wavelet transform to make it applicable to the digital watermark is encrypted, etc.
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Size: 35840 |
Author: roger |
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Description: A new approach for fingerprint verification, based on wavelets and pseudo Zernike moments (PZMs), is
discussed. PZMs are robust to noisy images, invariant to rotation and have a good image reconstruction
capability [4]. PZMs have been used for global analysis and so they are used to extract global features (the
shape of the fingerprint image). Wavelets are good at local analysis and so they help to extract local
features (minutiae) from a fingerprint. Therefore, this hybrid approach extracts most significant features
from the fingerprint images and achieve better verification rate. Different types of wavelets are used for the
study but the result shows that Symmlet orthonormal wavelet of order 8 gives best verification rate.
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Size: 386048 |
Author: samira |
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Description: 图像的二维小波分解与重构，dwt2函数和idwt2函数的应用-Two-dimensional image wavelet decomposition and reconstruction, dwt2 function and function application idwt2
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Size: 1024 |
Author: 李晓峰 |
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Description: 本代码基于dwt的音频水印技术，在音频中加入高斯随机水印，达到防伪的效果。-The code is based on dwt audio watermarking technology in audio watermarking by adding Gaussian random to achieve security results.
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Size: 1024 |
Author: 宁宇 |
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Description: ch3=softt(h3,thr1 clear
clc
I=imread( lena512.bmp )
imshow(I)
I=double(I)
II=I+30*randn(size(I))
figure
imshow(II,[])
[a1,h1,v1,d1]=dwt2(II, sym8 )
[a2,h2,v2,d2]=dwt2(a1, sym8 )
[a3,h3,v3,d3]=dwt2(a2, sym8 )
sigma=median(abs(d1(:)))/0.6745
x=3*sigma
thr1=x*2^(-1) thr2=x*2^(-0.5) thr3=x 小波图像去噪- ch3=softt(h3,thr1 clear
clc
I=imread( lena512.bmp )
imshow(I)
I=double(I)
II=I+30*randn(size(I))
figure
imshow(II,[])
[a1,h1,v1,d1]=dwt2(II, sym8 )
[a2,h2,v2,d2]=dwt2(a1, sym8 )
[a3,h3,v3,d3]=dwt2(a2, sym8 )
sigma=median(abs(d1(:)))/0.6745
x=3*sigma
thr1=x*2^(-1) thr2=x*2^(-0.5) thr3=x
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Size: 1024 |
Author: 张志强 |
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Description: 利用多尺度小波分解函数dwt2对图像进行二尺度小波分解（仍然采用db1小波）-(Still using db1 wavelet multi-scale wavelet decomposition of the two-scale wavelet decomposition function dwt2 image)
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Size: 2048 |
Author: whucs |
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Description: apply dwt2 on image that related with signal processing
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Size: 1024 |
Author: abodi |
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Description: three level on dwt2 by using matlab
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Size: 33792 |
Author: audry |
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Description: 利用离散小波变换DWT实现关于图像水印处理方面的功能-Image watermarking program
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Size: 1746944 |
Author: 潘洋绪 |
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Description: matlab开发环境，．编程实现二维DFT的变换，并与标准函数结果fft2进行比较，基本傅里叶、离散余弦变换，空域（完成两个程序）
增强噪声后再进行处理，利用标准函数，求图像阈值分割、边缘检测的基本使用（lena256.bmp，方法：graythresh、edge），求分水岭，利用标准函数dwt2、idwt2分解图像man_pic.jpg，基本 BP-BPbase1
-matlab development environment. Programming dimensional DFT transform, and with the standard functions compare results fft2 basic Fourier, discrete cosine transform, airspace (to complete the two programs) to enhance the noise and then processed using standard functions for image thresholding, edge Detection of basic use (lena256.bmp, method: graythresh, edge), seeking watershed, using a standard function dwt2, idwt2 decomposed image man_pic.jpg, basic BP-BPbase1
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Size: 1909760 |
Author: 杨恒明 |
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Description: 对图像tire的小波单层分解，利用MATLAB自带的函数dwt2-Single tire wavelet image decomposition, using MATLAB built-in function dwt2
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Size: 1024 |
Author: buewongmui |
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