python - What filter is used to remove corner effect on result -

below output

here marked in red circle. there lots of such line image, have marked 3 circle. how remove these lines? there filter remove line? think, due presence of corner.

you can use median filter remove thing.

try code , see difference while changing value of trackbar (mask size).

import cv2 import numpy np  def nothing(x):     pass  #image window cv2.namedwindow('image') cv2.namedwindow('image2')  # create trackbars color change cv2.createtrackbar('mask','image',1,10,nothing) cv2.createtrackbar('mask2','image2',1,10,nothing)  #loading images img = cv2.imread('vfgsn.png')     # load image path gray_im = cv2.cvtcolor(img, cv2.color_bgr2gray)  while true:     # current positions of trackbars     m = cv2.gettrackbarpos('mask','image')     m2 = cv2.gettrackbarpos('mask2','image2')     median = cv2.medianblur(gray_im,(2*m+1))     median2 = cv2.medianblur(img,(2*m2+1))     cv2.imshow('image',median)     cv2.imshow('image2',median2)     #press esc stop     k = cv2.waitkey(1) & 0xff     if k == 27:         break  cv2.destroyallwindows() 

resultant image mask : 5

in grayscale (with same mask)

but affects other parts of image. if don't want happen other part. can apply filter in region of interest only.

hope helps.