OPENCVpython 滤波

-- coding: utf-8 --

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Created on Sat Jan 25 09:40:09 2020

@author: Administrator
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import cv2 #opencv读取的格式是BGR
import matplotlib.pyplot as plt
import numpy as np
img=cv2.imread(‘d:\picture\lenaNoise.png’)
#图像的显示,也可以创建多个窗口
cv2.imshow(‘image’,img)

等待时间，毫秒级，0表示任意键终止

cv2.waitKey(0)
cv2.destroyAllWindows()
rows, cols,channel = img.shape[:3]
print(rows)
print(cols)
print(channel)

blur = cv2.blur(img, (3, 3))

cv2.imshow(‘blur’, blur)
cv2.waitKey(0)
cv2.destroyAllWindows()

高斯滤波

高斯模糊的卷积核里的数值是满足高斯分布，相当于更重视中间的

aussian = cv2.GaussianBlur(img, (5, 5), 1)

cv2.imshow(‘aussian’, aussian)
cv2.waitKey(0)
cv2.destroyAllWindows()

中值滤波

相当于用中值代替

median = cv2.medianBlur(img, 5) # 中值滤波

cv2.imshow(‘median’, median)
cv2.waitKey(0)
cv2.destroyAllWindows()