The text discusses the application of Computer Vision in a Windows Presentation Framework (WPF) app, specifically face detection. The author uses the Viola-Jones method for feature detection and integrates it into an OpenTok sample using Emgu CV. The code adds face detection to the renderer, which is 30 times faster than applying a blue filter. The article covers the requirements, prerequisites, and implementation details of the project, including setting up NuGet packages, creating classifiers, processing loops, and toggling the detection loop. It also discusses parameter tuning and suggests further applications of OpenCV in .NET.