In this tutorial, we will introduce how to remove image noise using midpoint filter in python opencv. You can implement this function step by step.

1.Open an image with noise

import numpy as np
import cv2
#read noise image
img_src = cv2.imread('sample.jpg')

2.Generate midpoint filter kernel

from scipy.ndimage import maximum_filter, minimum_filter
def midpoint(img):
    maxf = maximum_filter(img, (3, 3))
    minf = minimum_filter(img, (3, 3))
    midpoint = (maxf + minf) / 2
    cv2.imshow(midpoint)

3.Implement midpoint filter to remove noise

midpoint(img_src)

Run this code, you may get this image: