The document describes the process of camera tracking for augmented reality applications. It establishes a coordinate system or recognizes a scene, establishes enough features or spends enough time, then performs SIFT detection and feature tracking to overlay metadata on the displayed scenery with the pose of 3D objects following the pose of QR rectangles.

1. 

 
Start camera tracking
Established a coordinate system,
or recognized a scene
Established enough features (1000),
or spent enough time (10s)
Handy AR SIFT
Detection
SIFT Detection
Features Tracking
Handy AR Scene
Tracking
 Overlays of Metadata on Displayed Scenery
Pose of 3D object
follows the pose of
QR rectangle