import numpy as np <br>
import cv2 <br>

# Test Image <br>
test_image = cv2.imread('colab_data_2/test475.png') <br>
output = test_image.copy() <br>
gray = cv2.cvtColor(test_image, cv2.COLOR_BGR2GRAY) <br>
emojis = cv2.HoughCircles(gray, cv2.HOUGH_GRADIENT, 1, 10,
              param1=50,
              param2=15,
              minRadius=0,
              maxRadius=32) <br>
# ensure at least some circles were found <br>
print(len(emojis[0])) <br>

# show the output image
cv2.imshow("output", np.hstack([test_image, output]))<br>
cv2.waitKey(0)<br>