am working on project in which i supposed to detect defect in Syringe needle I tried this code but it should detect the defect of the needle of the syringe like if it is bent or something ,,, it worked but it just showing the image without indicating where is the defect or anything just opens the image
import cv2
import numpy as np
img = cv2.imread('Screenshot 2022-09-14 210348.jpg')
gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
edges = cv2.Canny(gray,50,150,apertureSize = 3)
lines = cv2.HoughLines(edges,1,np.pi/180,200)
for rho,theta in lines[0]:
a = np.cos(theta)
b = np.sin(theta)
x0 = a*rho
y0 = b*rho
x1 = int(x0 + 1000*(-b))
y1 = int(y0 + 1000*(a))
x2 = int(x0 - 1000*(-b))
y2 = int(y0 - 1000*(a))
cv2.line(img,(x1,y1),(x2,y2),(0,255,0),2)
cv2.imshow('image',img)
cv2.waitKey(0)
cv2.destroyAllWindows()
