Counting coins in an Image using OpenCV

 import cv2

import numpy as np

import matplotlib.pyplot as plt

image = cv2.imread("coins.jpg")

gray = cv2.cvtcolor(image , cv2.COLOR_BGR2GRAY)

plt.imshow(gray,cmap="gray")

blur = cv2.GaussianBlur(gray ,(11,11),0)

plt.imshow(blur , cmap ="gray")

canny = cv2.Canny(blur ,30 150,3)

plt.imshow(canny ,cmap = "gray")

dilated = cv2.dilate(canny ,(1,1) , iterations =0)

plt.imshow(dilated,cmap ='gray')

(cnt , hierarchy) = cv2.findContours(dilated.copy(),cv2RETER_EXTERNAL ,cv2.CHAIN_APPROX_NONE)

rgb = cv2.cvtColor(image , cv2.COLOR_BGR2RGB)

cv2.drawContours(rgb ,cnt, -1 ,(0,255,0),2)

plt.imshow(rgb)

print("coins in the image: ",len(cnt))