Miller Robotic Interface II Manual de usuario descargar pdf (Pagina 17)

2.2 Video-centric Interfaces

Video-centric interfaces are by far the most common type of interface used with remote robots.

It has been shown in studies that operators rely very heavily on the video feed from the robot

and tend to ignore any other sensor reading the interface may provide [Yanco and Drury, 2004].

Many, if not all, commercially available robots have video-centric interfaces.

Video-centric interfaces are often compared to video games [Richer and Drury, 2006]. First

person shooter games generally give the user full screen video. The video is overlaid with a

heads-up display (HUD) that gives the user all the status info he or she needs, such as health,

ammunition, mini-map, etc. In the same respect, video-centric interfaces often provide full

screen video with status information, such as battery voltage, overlaid in HUD fashion.

However, most robots, especially research platforms, have a variety of sensors that are not

available in the first person shooters. The information provided by these sensors also must be

displayed on the interface.

ARGOS from Brno University of Technology is a video-centric interface, shown in figure 3.

[Zalud, 2006]. It provides a full screen video interface with a HUD that displays a map, a

pan/tilt indicator and also a distance visualization widget that displays what the laser sensor on

the front of the robot detects. What makes this interface really unique is that it uses virtual

reality goggles. These goggles not only display the full interface, but the robot’s camera also

pans and tilts the camera based on where the operator is looking, making scanning an area

extremely intuitive. It also eliminates issues with forgetting that the camera is not centered. The

only problem with this approach is that people have been known to succumb to immersion

sickness due to the goggles. Also, the user must be careful to keep his or her head looking

straight ahead and level to keep the camera centered. This posture requirement could possibly

lead to neck stiffness and other related problems.

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Miller Robotic Interface II Manual de usuario Pagina 17