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Same fix as with the houghcircles

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Moved second `imshow()` inside the if-statement to prevent error when no lines have been found and the function is called with an empty `cdst`.
This commit is contained in:
Aleksandar Atanasov
2016-06-12 12:55:29 +02:00
committed by GitHub
parent c5bbc0353c
commit 445349dd7d
1 changed files with 2 additions and 1 deletions
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samples/python/houghlines.py
+2 -1
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@@ -47,7 +47,8 @@ if __name__ == '__main__':
pt1 = ( int(x0+1000*(-b)), int(y0+1000*(a)) )
pt2 = ( int(x0-1000*(-b)), int(y0-1000*(a)) )
cv2.line(cdst, pt1, pt2, (0, 0, 255), 3, cv2.LINE_AA)
cv2.imshow("detected lines", cdst)
cv2.imshow("source", src)
cv2.imshow("detected lines", cdst)
cv2.waitKey(0)