[numpy問題]The truth value of an array with more than one element is ambiguous.

問題描述：在進行Hough圓變換時，須要輸出一個圓的座標：python circles = cv2.HoughCircles(canny, cv2.HOUGH_GRADIENT, 2, 40, param1=30, param2=30, minRadius=0, maxRadius=20) 接下來會根據這個圓的座標來畫圓心：web for circle in circles[0]: x=i

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