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数字图像矩阵数据的显示及其傅立叶变换
二维离散余弦变换的图像压缩
采用灰度变换的方法增强图像的对比度
直方图均匀化
模拟图像受高斯白噪声和椒盐噪声的影响
采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波
用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波
图像的自适应魏纳滤波
运用5种不同的梯度增强法进行图像锐化
图像的高通滤波和掩模处理
用巴特沃斯（Butterwo
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implement 1D and 2D FFT and Inverse 2D FFT ,obtain the power spectrum from a set of FFT coefficients and achieve the Butterworth Lowpass Filter,implement 1D and 2D FFT and Inverse 2D FFT ,obtain the power spectrum from a set of FFT coefficients and a
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an butterworth lowpass filter
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IIR 数字滤波器设计：模拟低通巴特沃思滤波器、模拟低通切比雪夫1型滤波器、模拟低通切比雪夫2型滤波器、模拟椭圆低通滤波器-IIR Digital Filter Design: Analog low-pass Butterworth filter, analog low-pass Chebyshev Type 1 filter, analog low-pass Chebyshev type 2 filter, analog elliptical low-pass filter
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实时滤波器，具有精美界面，可以开发自己的应用功能。-You can use 4 types of filters:
- Butterworth
- Chebyshev 1
- Chebyshev 2
- Elliptic
You can use them as:
- Lowpass
- Highpass
- Bandpass
- Stopband
Showing theirs features in frequency, phase and
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In oreder to compare Impulse Invariance method charactristics for transformation analogue filters to digital ones in highpass and bandpass and lowpass formats,here are 6 M-files that simulate a third order butterworth filter analyizing impulse respon
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Filter type: Low Pass
Filter model: Butterworth
Filter order: 2
Sampling Frequency: 1000 Hz
Cut Frequency: 100.000000 Hz
Coefficents Quantization: 16-bit
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在matlab中实现巴特沃斯低通滤波器as=70 Fs=15000 Fp=9000 -butterworth lowpass filter as=70 Fs=15000 Fp=9000
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butterworth highpass and lowpa-butterworth highpass and lowpass
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实现巴特沃斯低通滤波器的小程序，大家看看能不能参考一下。-Butterworth low-pass filter program, see if you can refer to.
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butterworth low pass filter
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design of:
1.butterworth bandpass filter
2.butterworth bandstop filter
3.butterworth lowpass filter
4.butterworth highpass filter
for the given specifications using matlab
design of:
1.hilbert transformer
2.differentiator
using
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脉冲响应不变法设计数字低通滤波器,设计Butterworth低通滤波器，用脉冲响应不变法转换成数字滤波器。-The impulse response of the same method design digital low-pass filter design Butterworth lowpass filter with impulse response of the invariant method converts the digital filter.
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建立巴特沃兹低通滤波器来过滤图像中的噪声，一般噪声为高频，该滤波器可以很好的过滤掉噪声-Butterworth Lowpass Filter
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Butterworth Lowpass Filter, I hope it can be useful a little.
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voice filting based on Butterworth Lowpass Filter, I hope it can be useful a little
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butterworth 低通滤波函数，没有调用系统函数，自己编写-butterworth lowpass function，which is writed by oneself，not call for the system function
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数字信号频域处理的matlab源程序，包括dct，butterworth，lowpass等-Frequency-domain digital signal processing matlab source, including dct, butterworth, lowpass, etc.
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用双线性变换法设计一个巴特沃斯低通IIR数字滤波器-By bilinear transform design a Butterworth low-pass IIR digital filter
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butterworth lowpass filter used for finding speech signal.
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