import numpy as np
import cv2
import math

cap = cv2.VideoCapture(0)

#fgbg = cv2.BackgroundSubtractorMOG()

while(1):
    ret, frame = cap.read()
    gray = cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)

#    fgmask = fgbg.apply(frame)

    gray = np.float32(gray)
    dst = cv2.cornerHarris(gray,4,3,0.04)

    dst = cv2.dilate(dst,None)

    print math.log(dst.max())
    frame[dst>0.01*dst.max()]=[0,0,255]

    cv2.imshow('esquinas frame',frame)
    cv2.imshow('grises',dst)
    k = cv2.waitKey(30) & 0xff
    if k == 27:
        break

cap.release()
cv2.destroyAllWindows()