In [9]:

    

# Standard imports
import cv2
import numpy as np;
 
# Read image
image = cv2.imread("images/Sunflowers.jpg")
 
# Set up the detector with default parameters.
detector = cv2.SimpleBlobDetector()
 
# Detect blobs.
keypoints = detector.detect(image)
 
# Draw detected blobs as red circles.
# cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS ensures the size of
# the circle corresponds to the size of blob
blank = np.zeros((1,1)) 
blobs = cv2.drawKeypoints(image, keypoints, blank, (0,255,255),
                                      cv2.DRAW_MATCHES_FLAGS_DEFAULT)
 
# Show keypoints
cv2.imshow("Blobs", blobs)
cv2.waitKey(0)
cv2.destroyAllWindows()


    

In [3]: