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Planning the app
The final app will consist of the following modules and scripts:
filters: A module comprising different classes for the three different image effects. The modular approach will allow us to use the filters independently of any graphical user interface (GUI).filters.PencilSketch: A class for applying the pencil sketch effect to an RGB color image.filters.WarmingFilter: A class for applying the warming filter to an RGB color image.filters.CoolingFilter: A class for applying the cooling filter to an RGB color image.filters.Cartoonizer: A method for applying the cartoonizer effect to an RGB color image.gui: A module that provides a wxPython GUI application to access the webcam and display the camera feed, which we will make extensive use of throughout the book.gui.BaseLayout: A generic layout from which more complicated layouts can be built.chapter1: The main script for this chapter.chapter1.FilterLayout: A custom layout based ongui.BaseLayoutthat displays the camera feed and a row of radio buttons that allows the user to select from the available image filters to be applied to each frame of the camera feed.chapter1.main: The main function routine for starting the GUI application and accessing the webcam.