import numpy as np
import cv2
import cv2.cv

cap = cv2.VideoCapture(0)

while(True):
    # Capture frame-by-frame
    ret, frame = cap.read()

    # Our operations on the frame come here
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    # Display the resulting frame

    circles = cv2.HoughCircles(gray,cv2.cv.CV_HOUGH_GRADIENT,1,20,param1=50,param2=30,minRadius=10,maxRadius=15)
    # print circles
    if circles is not None:
        print circles
        circles = np.uint16(np.around(circles))
        for i in circles[0,:]:
            # draw the outer circle
            cv2.circle(gray,(i[0],i[1]),i[2],(246,11,11),1)
            # draw the center of the circle
            cv2.circle(gray,(i[0],i[1]),2,(246,11,11),1)


    cv2.imshow('frame',gray)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break




# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()