What does cvHoughCircle return if no circle is detected. I want to use it in a if condition.. And if no circle is detected.. hard code it.
Thanks!
What does cvHoughCircle return if no circle is detected. I want to use it
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What does cvHoughCircle return if no circle is detected. I want to use it in a if condition.. And if no circle is detected.. hard code it.
Thanks!
The C++ function
cv::HoughCircleshas a void return.In the example from the OpenCV documentation, they use the value of
circles.size()to know how many circles were found. (circlesis the second argument toHoughCircles, where the output is stored.)However, if you really want to use the C
cvHoughCircles, it returns a pointer to aCvSeq(documentation). You can check it’s->totalmember to see how many circles were returned.