Webcam Sketch

import cv2

import numpy as np

def webcam_sketch(image):

    img_gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

    img_gray_blur = cv2.GaussianBlur(img_gray, (5,5), 0)

    canny_edges = cv2.Canny(img_gray_blur, 10, 70)

    ret, mask = cv2.threshold(canny_edges, 70, 255, cv2.THRESH_BINARY_INV)

    return mask

cap = cv2.VideoCapture(0)

while True:

    ret, frame = cap.read()

    cv2.imshow('Sketch', webcam_sketch(frame))

    if cv2.waitKey(1) == 13: 

        break

cap.release()

cv2.destroyAllWindows()