37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
import cv2
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import numpy as np
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param1=30
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param2=55
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dp=1.0
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cap=cv2.VideoCapture(0)
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while True:
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ret, frame=cap.read()
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gray=cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
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circles=cv2.HoughCircles(gray, cv2.HOUGH_GRADIENT, dp, 20, param1=param1, param2=param2, minRadius=10, maxRadius=50)
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if circles is not None:
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circles=np.around(circles).astype(np.int32)
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for i in circles[0, :]:
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if i[2]!=0:
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cv2.circle(frame, (i[0], i[1]), i[2], (0, 255, 0), 4)
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cv2.putText(frame, "[i|k]dp: {:4.2f} [o|l]param1: {:d} [p|m]param2: {:d}".format(dp, param1, param2), (10, 40), cv2.FONT_HERSHEY_COMPLEX_SMALL, 1, (255, 0, 0), 1)
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cv2.imshow("Video", frame)
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key=cv2.waitKey(1)&0xFF
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if key==ord('q'):
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quit()
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if key==ord('i'):
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dp=min(10, dp+0.1)
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if key==ord('k'):
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dp=max(0.1, dp-0.1)
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if key==ord('o'):
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param1=min(255, param1+1)
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if key==ord('l'):
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param1=max(1, param1-1)
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if key==ord('p'):
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param2=min(255, param2+1)
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if key==ord('m'):
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param2=max(1, param2-1)
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cv2.destroyAllWindows()
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