Image to Sketch Art

from cv2 import cv2
import os
import os.path
from datetime import datetime, date
# http://www.pillalamarri.in/python/image-to-sketch-art/
# To capture image from webcam
# The image will be stored with the filename as datetime.now() and will be in webcam/data


def openCam():
    datasets = 'webcam'
    sub_data = 'data'
    path = os.path.join(datasets, sub_data)
    if not os.path.isdir(path):
        os.mkdir(path)
    webcam = cv2.VideoCapture(0, cv2.CAP_DSHOW)
    (_, im) = webcam.read()
    now = str(datetime.now())
    now = now.replace(':', '')
    now = now.replace('-', '')
    now = now.replace('.', '')
    now = now.replace(' ', '')

    cv2.imwrite(f'webcam\\data\\{now}.png', im)
    img = f'webcam\\data\\{now}.png'
    convert(img)

# This is to convert the file passed as parameter to sketch


def convert(now):
    print()
    img = input('Enter the filename for the output image: ')
    print()
    directory = img

    # To create the folder in sketches of that filename
    # And this folder will contain all images as transition to sketch

    parent_dir = f'.\\ImageToSketch\\sketches'
    path = os.path.join(parent_dir, directory)
    try:
        os.mkdir(path)
    except OSError as error:
        print(error)
    image = cv2.imread(now)
    gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
    cv2.imwrite(f"{path}\\{img}(gray).png", gray)
    inverted = 255 - gray
    cv2.imwrite(f"{path}\\{img}(inverted).png", inverted)
    blurred = cv2.GaussianBlur(inverted, (21, 21), 0)
    cv2.imwrite(f"{path}\\{img}(blured).png", blurred)
    inverted_blurred = 255 - blurred
    pencil_sketch = cv2.divide(gray, inverted_blurred, scale=256.0)
    cv2.imwrite(f"{path}\\{img}(final).png", pencil_sketch)
    print()
    print(f'You can find the image here: {path}\\{img}(final).png')

# Main Menu


def start():
    print('Enter the number according to your preference: ')
    print('1 - Capture image from webcam.')
    print('2 - Input the image path.')
    print('3 - Exit')

    while(1):
        print()
        user = int(input('Enter the number: '))
        print()
        if user == 1:
            openCam()
        elif user == 2:
            img = input('Enter the input path for the image: ')
            convert(img)
        elif user == 3:
            break
        else:
            print('Enter a valid number.....')


if __name__ == '__main__':
    start()
# http://www.pillalamarri.in/python/image-to-sketch-art/