Application infrastructure

So far, we've learned how to detect a pattern and estimate its 3D position with regards to the camera. Now it's time to show how to put these algorithms into a real application. So our goal for this section is to show how to use OpenCV to capture a video from a web camera and create the visualization context for 3D rendering.

As our goal is to show how to use key features of marker-less AR, we will create a simple command-line application that will be capable of detecting arbitrary pattern images either in a video sequence or in still images.

To hold all image-processing logic and intermediate data, we introduce the ARPipeline class. It's a root object that holds all subcomponents necessary for augmented reality and performs ...

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