**2.3 Augmented reality systems work process**

There are four main stages in augmented reality systems' functioning [5]: scene capture, identification, processing and preview.

The reality that has to be augmented with digital content is captured by video or optical see-through devices. The captured reality is scanned to determine the position of virtual content that augments it by markers or tracking technologies. When the scene becomes recognized and identified, relevant virtual content is required from different sources. The final step is to create a mixed image of the real scene and embedded virtual content.

Users need the appropriate software to view and interact with digital content that augments the physical world. They can use augmented reality browsers or specific applications.
