#Visualstogramas
import numpy as np
import cv2
import cv
from matplotlib import pyplot as plt

cap = cv2.VideoCapture(0)

# Define the codec and create VideoWriter object
#ourcc = cv2.cv.CV_FOURCC(*'XVID')  # cv2.VideoWriter_fourcc() does not exist
#ut = cv2.VideoWriter('output.avi',fourcc, 20.0, (640,480))
kernel = np.ones((3,3),np.uint8)

while(cap.isOpened()):
    ret, img = cap.read()
    cimg = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
    circles = cv2.HoughCircles(cimg,cv2.cv.CV_HOUGH_GRADIENT,1,70,param1=50,param2=30,minRadius=50,maxRadius=100)

    circles = np.uint16(np.around(circles))
    for i in circles[0,:]:
      # draw the outer circle
      cv2.circle(cimg,(i[0],i[1]),i[2],(0,255,0),2)
      # draw the center of the circle
      cv2.circle(cimg,(i[0],i[1]),2,(0,0,255),3)

    cv2.imshow('detected circles',cimg)
    cv2.imshow('Imagen Original',img)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

# Release everything if job is finished
cap.release()
cv2.destroyAllWindows()