Choose an image to work with:
import cv2 as cv
img = cv.imread('Image/Lady.jpeg')
cv.imshow('Image', img)
Averaging
# Averaging:
average = cv.blur(img, (5,5))
cv.imshow('Average Blur', average)

Gaussian Blur
# Gaussian Blur
gauss = cv.GaussianBlur(img, (5,5), 0)
cv.imshow('Gaussion Blur', gauss)

Median Blur
# Median Blur
median = cv.medianBlur(img, 5)
cv.imshow('Median Blur', median)

Bilateral Blur
# Bilateral Blur
bilateral = cv.bilateralFilter(img, 10, 35, 25)
cv.imshow('Bilateral Blur', bilateral)

OpenCV 9: Blur