OpenCV with Python Blueprints

Putting it all together

Before we can make use of the designed image filter effects in an interactive way, we need to set up the main script and design a GUI application.

Running the app

To run the application, we will turn to the chapter1.py. script, which we will start by importing all the necessary modules:

import numpy as np

import wx
import cv2

We will also have to import a generic GUI layout (from gui) and all the designed image effects (from filters):

from gui import BaseLayout
from filters import PencilSketch, WarmingFilter, CoolingFilter, Cartoonizer

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 main(): ...