OpenCV 4 with Python Blueprints - Second Edition

Running the app

To run the application, we will turn to the chapter1.py script. Follow these steps to do so:

1. We first start by importing all the necessary modules:

import wximport cv2import numpy as np

2. We will also have to import a generic GUI layout (from wx_gui) and all the designed image effects (from tools):

from wx_gui import BaseLayoutfrom tools import apply_hue_filterfrom tools import apply_rgb_filtersfrom tools import load_img_resizedfrom tools import spline_to_lookup_tablefrom tools import cartoonizefrom tools import pencil_sketch_on_canvas

3. OpenCV provides a straightforward way to access a computer's webcam or camera device. The following code snippet opens the default camera ID (0) of a computer using cv2.VideoCapture:

def ...