import cv2
import numpy as np

cap = cv2.VideoCapture(0)
cap.set(cv2.CAP_PROP_FRAME_WIDTH, 160)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 120)
while(1):
    _, frame = cap.read()
    laplacian = cv2.Laplacian(frame, cv2.CV_64F)
    # cv2.imshow('oringinal', frame)
    cv2.imshow('laplacian',laplacian)
    k = cv2.waitKey(5) & 0xFF
    if k == 27:
        break

cv2.destroyAllWindows()
cap.release()