Fill Detected Blobs (opencv,python)

I want to fill the detected blobs in my images with white color. This is the code I am using: # Standard imports import cv2 import numpy as np # Read image im = cv2.imread('5.tif'

Solution 1:

Draw keypoints as filled white circles:

img = im.copy()
for x in range(1,len(keypoints)):
  img=cv2.circle(img, (np.int(keypoints[x].pt[0]),np.int(keypoints[x].pt[1])), radius=np.int(keypoints[x].size), color=(255), thickness=-1)

Edit: For rectangle or square, then:

for i inrange(1,len(keypoints)):
  x,y = np.int(keypoints[i].pt[0]),np.int(keypoints[i].pt[1])
  sz = np.int(keypoints[i].size)
  if sz > 1:
      sz = np.int(sz/2)
  # notice there's no boundary check for pt1 and pt2, you have to do that yourself
  img = cv2.rectangle(img, (x-sz,y-sz), (x+sz,y+sz), color=(255), thickness=-1)