B. Augmented Reality Tracking
AR tracking refers to the technology of identifying points
or areas to which virtual images or tags are attached on top
of real-world images captured with the camera. An approach
to AR tracking can be based on data from sensors, visions, or
a combination of both. Sensor-based AR tracking pays
attention to the position, movement, speed, and direction of
the object, and relies on data from sensors such as GPS,
digital compass, and accelerometer. Vision-based AR
tracking on the other hand focuses on identification of
markers, non-markers, regular objects, and image. Hybrid
AR tracking combines sensor-based and vision-based
approaches [16].
Most of the recent AR implementations in the mobile
environment use sensor-based tracking. As the computing
power of mobile devices have improved lately, non-marker
approaches are explored as well.