median filter in scipy

An introduction to the algorithm

Median filtering is a commonly used preprocessing technique in digital signal processing and digital image processing.

two code

1. import random
2. import numpy as np
3. import scipy.signal as signal
4. x = np.arange(0,100,10)
5. random.shuffle(x)#打乱顺序
6. print(x)
7. print(signal.medfilt(x,3))#中值滤波

Three running results

[30  0 20 60 70 40 50 80 90 10]

[  0.  20.  20.  60.  60.  50.  50.  80.  80.  10.]