Advanced Building Simulation

etter than the others, they suffer from distortion and they are sensitive to object
blocking. These sensors are typically used for motion-capture applications that track
the movement of the body within a three-dimensional space (Figures 9.13 and 9.14).
Table 9.3 provides a sample comparison of different sensor types and their associated
static accuracy position and orientation errors.
DISPLAY
Immersive building simulation 229
Figure 9.13 Motion-capture of an actor performing in the liveActor (Optical technology) (Courtesy:
Salim Zayat, University of Pennsylvania). (See Plate XV.)
Figure 9.14 Sensors adorn the actor’s body (Courtesy: Kevin Monko,Thinkframe). (See Plate XVI.)
Several display mechanisms exist. For fully and partial immersive environments, the
most commonly used displays are HMD, BOOM and CAVE.
Head Mounted Display (HMD) is a complex physical system that integrates the
combiners, optics and monitors into one (Figure 9.15). HMDs typically use either