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Description: Bi-dimensional Gabor filter with DC component compensation
This version of the 2D Gabor filter is basically a bi-dimensional Gaussian function centered at origin (0,0) with variance S modulated by a complex sinusoid with polar frequency (F,W) and phase P described by the following equation:
G(x,y,S,F,W,P)=k*Gaussian(x,y,S)*(Sinusoid(x,y,F,W,P)-DC(F,S,P)),
where:
Gaussian(x,y,S)=exp(-pi*S^2*(x^2+y^2))
Sinusoid(x,y,F,W,P)=exp(j*(2*pi*F*(x*cos(W)+y*sin(W))+P)))
DC(F,S,P)=exp(-pi*(F/S)^2+j*P)
File Id: 13776 Average rating: 0.0
Size: 1 KB # of reviews: 0
Submitted: 2007-01-26 Downloads: 274
Subscribers: 0
Keywords: gabor filter
Stiven Schwanz Dias
-Bi-dimensional Gabor filter with DC compo .. compensation This version of the 2D Gabor f ilter is basically a bi-dimensional Gaussian f unction centered at origin (0, 0) with variance S modulated by a complex sinuso id with polar frequency (F, W) and phase P described by the following equati on : G (x, y, S, F, W, P) = k * Gaussian (x, y, S) * (Sinusoid (x, y, F, W, P) - DC (F, S, P)), where : Gaussian (x, y, S) = exp (-pi * S * 2 ^ (x ^ 2 y ^ 2)) Sinusoid (x, y, F, W, P) = exp (j * (2 * pi * F * (x * cos (W) y * sin (W)) P))) D C (F, S, P) = exp (-pi * (F / S) ^ 2 * P j) File Id : 13776 Average rating : 0.0 Size : # 1 KB of reviews : 0 Submitted : 2007-01-26 Downloads : 274 Subscribers : 0 Keywords : gabor filter Stiven Schwanz Dias
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Size: 1298 |
Author: 石峰 |
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Description: java中用jni实现调用window mediaplay
组件实现window mediaplay在java中内嵌
组件的例子-used to achieve Nations call window mediaplay Component wind ow mediaplay in java embed components example
Platform: |
Size: 57344 |
Author: zongying |
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Description: Bi-dimensional Gabor filter with DC component compensation
This version of the 2D Gabor filter is basically a bi-dimensional Gaussian function centered at origin (0,0) with variance S modulated by a complex sinusoid with polar frequency (F,W) and phase P described by the following equation:
G(x,y,S,F,W,P)=k*Gaussian(x,y,S)*(Sinusoid(x,y,F,W,P)-DC(F,S,P)),
where:
Gaussian(x,y,S)=exp(-pi*S^2*(x^2+y^2))
Sinusoid(x,y,F,W,P)=exp(j*(2*pi*F*(x*cos(W)+y*sin(W))+P)))
DC(F,S,P)=exp(-pi*(F/S)^2+j*P)
File Id: 13776 Average rating: 0.0
Size: 1 KB # of reviews: 0
Submitted: 2007-01-26 Downloads: 274
Subscribers: 0
Keywords: gabor filter
Stiven Schwanz Dias
-Bi-dimensional Gabor filter with DC compo .. compensation This version of the 2D Gabor f ilter is basically a bi-dimensional Gaussian f unction centered at origin (0, 0) with variance S modulated by a complex sinuso id with polar frequency (F, W) and phase P described by the following equati on : G (x, y, S, F, W, P) = k* Gaussian (x, y, S)* (Sinusoid (x, y, F, W, P)- DC (F, S, P)), where : Gaussian (x, y, S) = exp (-pi* S* 2 ^ (x ^ 2 y ^ 2)) Sinusoid (x, y, F, W, P) = exp (j* (2* pi* F* (x* cos (W) y* sin (W)) P))) D C (F, S, P) = exp (-pi* (F/S) ^ 2* P j) File Id : 13776 Average rating : 0.0 Size :# 1 KB of reviews : 0 Submitted : 2007-01-26 Downloads : 274 Subscribers : 0 Keywords : gabor filter Stiven Schwanz Dias
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Size: 1024 |
Author: 石峰 |
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Description: 基于VHDL语言的HDB3码编译码器的设计
HDB3 码的全称是三阶高密度双极性码，它是数字基带传输中的一种重要码型，具有频谱中无直流分量、能量集中、提取位同步信息方便等优点。HDB3 码是在AMI码(极性交替转换码)的基础上发展起来的，解决了AMI码在连0码过多时同步提取困难的问题-Based on the VHDL language code HDB3 codecs design HDB3 code name is the third-order high-density bipolar code, it is the digital base-band transmission an important pattern, with no DC component spectrum, energy concentration, extraction bit synchronization information, such as the advantages of convenience. HDB3 code is in the AMI code (alternating polarity conversion code) developed on the basis of resolving the AMI code 0 yards too much even when difficult issues simultaneously extract
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Size: 257024 |
Author: liangtao |
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Description: 由于待提取的分量为直流分量，而干扰信号的频谱占据整个频带，本题将从零点、极点分布特性出发，利用所谓的零、极点累试方法进行滤波器的设计。-To be extracted as a result of the weight for the DC component, while the jamming signal spectrum occupies the entire frequency band, the title will be zero and pole distribution characteristics, the use of the so-called zero, tired pole test filter design methods.
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Size: 1024 |
Author: xuxiaodong10 |
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Description: 一个图像小波数字水印的matlab代码,利用小波变换，在DC分量上实现自适应编码-An image digital watermarking wavelet matlab code, the use of wavelet transform, the DC component on the realization of adaptive coding
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Size: 1286144 |
Author: 杨森泉 |
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Description: 对二维图像进行离散傅里叶变换，分别给出了直流分量移动到频谱中心前后的频谱图样。-Two-dimensional images of the discrete Fourier transform, respectively, given the spectrum to move to the DC component of the spectrum before and after the design center.
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Size: 39936 |
Author: 万永 |
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Description: In this paper the watermarking programs based on the
discrete cosine transform (DCT) domain DC component (DC) is
adopted. Through adjusting the block DCT coefficient of the image the
watermarks are hidden. And blocking the selected image according to
8×8 pixel, then dividing the selected image into four non-overlapped
sub image blocks according to 4×4 pixel, and thus the watermarks are
embedded through adjusting their DCT coefficient. The experimental
results show that the method has strong robust.
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Size: 381952 |
Author: Sheraz |
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Description: 数字图像处理中用于离散傅里叶变换将直流分量移到中心离散余弦变换等处理的简单代码-Digital Image Processing for the Discrete Fourier transform DC component to the center discrete cosine transform, to deal with a simple code
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Size: 289792 |
Author: xutongxue |
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Description: High-Pass filter to remove DC component from audio signal.
Platform: |
Size: 1024 |
Author: Darko8 |
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Description: in this file we save an image as watermark into a gray scale image. here the watermark is embedded into the dc component.first we decompose the image up to 3 levels
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Size: 1388544 |
Author: afifayounus |
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Description: 如果是复指数形式的傅里叶级数，因为复指数函数的功率等于其系数的模的平方，直接把傅里叶系数平方求和就行；如果是三角形式的傅里叶级数，因为三角函数的功率等于其系数的模的平方的一半，需要把各次谐波傅里叶系数平方求和的一半 与直流分量的平方相加。-If the complex exponential form of Fourier series, complex exponential function because the power is equal to the square of the modulus of its coefficient, the square sum of Fourier coefficients directly on the line If the triangular form of Fourier series, because the triangle function of power equal to the square of the modulus of its coefficient of half of the need to square the harmonic Fourier coefficients of half the sum of the square sum of the DC component.
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Size: 13312 |
Author: 李国俊 |
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Description: 系统采用一阶差分与全周傅氏算法相结合的
值。通过一阶差分去除信号中的直流分量与低
信号中的高频分量，并将信号转换为相量表示-System uses the first difference Fourier algorithm with the whole week combined value. Removal of the signal by the first difference in the DC component and low signal in the high frequency components and said signal is converted to phasor
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Size: 587776 |
Author: 李浩 |
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Description: 通信原理中功率谱密度的仿真，仿真了不同占空比，等概、非等概双极性矩形随机信号的归一化功率谱密度，并分析不同信号（不同占空比，等概非等概）所包含的频谱分量，有无直流分量和定时分量信息-Communication theory in the power spectral density of the simulation, the simulation of different duty cycles, such as almost, almost bipolar rectangular Non-random signal normalized power spectral density, and the analysis of different signals (different duty cycle, etc. None of the other Summary) contains the spectrum component, with or without DC component and time component information
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Size: 1024 |
Author: 江明 |
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Description: this source is intended for removal of dc component
Platform: |
Size: 29696 |
Author: smith bai |
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Description: 对录音信号集 中的某一语音，利用BATLAB设计一美尔例谱算法，并实现。
取信号集 中的一个语音信号：“xxxxxx”，将它作为输入的语音信号来为设计一个美尔倒谱算法，在该算法中，主要设计了以下环节：
1.读入一个语音信号；2.对这个信号归一化；3.对归一化的信号进行加窗处理（这里的矩形窗长度必须为257，重帧长64）；4.进行预加重处理，即通过一个高通滤波器： ；5进行512点的FFT；6.分别取模平方得到功率谱；7.在设计的mel滤波器组中，我采用了25个带通滤波器；8.将得到的功率谱信号通过mel滤波器组，得到相应的25个功率值；9.对这些功率值取自然对数；10.对这些值取离散作弦变换；11.将得到的值去掉直流分量，取其它值作为MFCC参数。
-Concentrated on recording a voice signal, using BATLAB designed Mayer cases spectral algorithm, and implementation.
Get a voice signal signal focus: "xxxxxx", will it as input for the design of a voice signal to Mel Cepstrum algorithm in the algorithm, the main design of the following links:
1. Read a speech signal 2. On the signal normalized 3. Of the normalized windowed signal processing (here, rectangular window length must be 257, re-frame size 64) 4. For Pre-emphasis processing through a high-pass filter: 5 for 512 points of FFT 6. modulo square were obtained spectrum 7. in the design of mel filter banks, I use a 25 band-pass filter 8 . will be the power spectrum signal by mel filter bank, corresponding to the 25 power values 9. on the power to take the natural logarithm value 10. to take these values as strings of discrete transform 11. will be of value to out DC component, to take other values as MFCC parameters.
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Size: 13312 |
Author: 赵欣 |
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Description: Utility restructuring, technology evolution,
public environmental policy, and expanding power
demand are providing the opportunity for microturbines
to become important energy resources. In order to
investigate the ability of microturbine units in
distribution systems, new simulation tools are needed.
This paper presents a dynamic models for microturbines.
For the purpose of modeling initialy a dynamic model
for each component in the system, including gas turbine,
permanent magnet generator, DC bridge rectifier and
power inverter is developed and after this stage the
model is implemented in a simulation software. In this
research the simulation tool is Matlab/Simulink. Also the
systems stand-alone dynamic performances is analyzed
and evaluated.
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Size: 307200 |
Author: proust |
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Description: 基于EMD的直流电机换向电流提取程序。内含用LEM公司的霍尔传感器实测的微型直流电动机启动时的电流信号（真实的数据和大家分享），分别用小波滤波和EMD消噪，并用EMD提取直流分量、高频换向电流，对研究电机间接测速、启动特性测试很有帮助，对电机故障诊断也有帮助。-EMD-based DC motor commutation current extraction procedures. LEM s included with Hall sensors measured miniature DC motor start-up current signals (real data and to share), respectively, with wavelet filtering and EMD de-noising and extracted DC component with EMD, a high-frequency current commutation of indirect research motor speed, starting characteristics testing is helpful, for motor fault diagnosis can also help.
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Size: 716800 |
Author: 黄传金 |
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Description: 空间域基于DC分量的盲彩色数字水印，根据直流系数的产生原理和分布特征，在空间域中嵌入水印。-A blind color image watermarking based on DC component in the spatial domain.By using the generating principle and distribution feature of the DC coefficient,the watermarking is inserted into the spatial domain.
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Size: 353280 |
Author: 张燕华 |
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Description: dc component of a signal
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Size: 23552 |
Author: reza72
|
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