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LPF1
- 设计一个低通数字滤波器，满足如下设计指标： 通带截止频率：0.2pi，通带波动：1dB 阻带截止频率：0.3pi，阻带衰减：15dB 要求：采用切比雪夫Ⅱ型滤波器原型，并分别采用脉冲响应不变变换法和双线性变换法进行设计，比较设计的结果，并进行分析 -Design a low pass digital filters that meet the following design specifications: passband cutoff frequency: 0.2pi
adjcontrast
- 图像预处理中的图像去噪声，滤波器的程序，能把带噪声的图像还原，敬请关注- ADJCONTRAST- Adjusts image contrast using sigmoid function. function g = adjcontrast(im, gain, cutoff) Arguments: im - image to be processed. gain - controls the a
chap10
- 在matlab中利用频率变换法生成一个2-D滤波器，设计一个截止频率为0.5的理想低通滤波器-In matlab using frequency transformation method to generate a 2-D filter design with a cutoff frequency of 0.5 for the ideal low-pass filter
chap10
- ch10_1_1：利用函数imfilter实现图像滤波 ch10_2_1：利用频率变换法生成一个2-D滤波器 ch10_2_2：利用频率采样法生成一个2-D滤波器 ch10_2_3：利用窗口法生成一个2-D滤波器（ ch10_2_4：设计一个截止频率为0.5的理想低通滤波器-ch10_1_1: Image filtering using function imfilter ch10_2_1: the use of frequency transformation method t
second~
- 要求做一个实验，对一副M*N大小的图像重复使用截频为D0的高斯低通滤波器进行滤波。假设K为滤波次数。当K足够大时，滤波结果是什么样-Asked to do an experiment, a M* N-size image re-use the cutoff frequency for the D0 Gaussian low-pass filter for filtering. Assuming K is filtering times. When K is sufficiently large,
High-Pass-Filter
- 高通濾波器（英語：High-pass filter）是容許高頻信號通過、但減弱（或減少）頻率低於截止頻率信號通過的濾波器。-High-pass filter (English: High-pass filter) is to allow the high frequency signal through, but decreased (or decrease) the frequency signals below the cutoff frequency of the filter.
lpfilter1
- 要求做一个实验，对一副M*N大小的图像重复使用截频为D0的高斯低通滤波器进行滤波。假设K为滤波次数。当K足够大时，滤波结果是什么样？并从理论上说明这一结果产生的原因。 -Asked to do an experiment on a M* N image size cutoff frequency reuse as D0 Gaussian low-pass filter for filtering. Assuming K is the filter frequency. When K is l
sfr2
- 计算图像的截止频率，也就是图像的SFR，可直接运行-Calculate the image cutoff frequency, which is the image of SFR, can be directly run
012
- 包含理想低通滤波、巴特沃斯低通滤波和高斯低通滤波程序。并且每个程序包含两个不同截止频率的滤波器。-Including ideal low-pass filtering, Bartworth low-pass filtering and Gaussian low-pass filtering procedures. And each program contains two different cutoff frequency filters.