AttributeError: 'module' object has no attribute 'HOUGH_GRADIENT', cv.HOUGH_GRADIENT not fixing the issue
attributeerror, opencv, python
Solution
The problem is that the attribute is
cv.CV_HOUGH_GRADIENT
So you need to do
circles = cv2.HoughCircles(img, cv.CV_HOUGH_GRADIENT, 1, 20, param1=50, param2=30, minRadius=0, maxRadius=0)
Problem
Getting an attribute error when trying to run the following code: ``` import cv2 import cv2.cv as cv import numpy as np def main(): img = cv2.imread('images/g1.jpg',0); print(img) img = cv2.medianBlur(img,5) cimg = cv2.cvtColor(img,cv2.COLOR_GRAY2BGR) circles = cv2.HoughCircles(img, cv.HOUGH_GRADIENT, 1, 20, param1=50, param2=30, minRadius=0, maxRadius=0) circles = np.uint16(np.around(circles)) for i in circles[0,:]: # draw the outer circle cv2.circle(cimg,(i[0],i[1]),i[2],(0,255,0),2) # draw the center of the circle cv2.circle(cimg,(i[0],i[1]),2,(0,0,255),3) cv2.imshow('detected circles',cimg) cv2.waitKey(0) cv2.destroyAllWindows() ``` I've tried to look up a solution to this problem and I substituted the `cv2` with `cv` in ``` circles = cv2.HoughCircles(img, cv.HOUGH_GRADIENT, 1, 20, param1=50, param2=30, minRadius=0, maxRadius=0) ``` however, I am still getting the error.