Metrics and Models for the Perceptual Design of Virtual Transparency - Progress (07/98)

---

Optical and electronic alignment of the head mounted display has revealed an approximate 10 degree lateral shift not previously noticed. Investigations are progressing to identify the source of this to avoid having to use a software correction which will sacrifice some field of view. Consequently, completion of the 98b milestone may be delayed until August or September.

Example of a user of the see-through head-mounted display watch an air traffic control tower simultion of traffic landing at San Francisco International Airport.

The distortion field in the virtual envrionment room is being remeasured for improved spatial calibration and spatialized sound has been added to the basic simulation software capacity. This addition will be demonstrated next month

Three psychophysical functions of the detectability of variation in rendering latency of veritual objects have been completed. These may be the first such functions ever recorded and will help understand the relationship between the minimum noticeable latency and its effect on the percieved depth of a virtual objects depicted at great distance, i.e. > 0.5 km.

Publication activity

Begault, Durand R. Ellis, Stephen R. , and Wenzel, Elizabeth M. (1998) Headphone and head-mounted visual displays for virtual environments, 15th International Conference Of The Audio Engineering Society, submitted paper

Ellis, Stephen R. & Menges, Brian M. (1998) Operator Localization of Virtual Objects, Proceedings of MMM '98, Zürich, Switzerland, invited paper.

SIGNIFICANT EXTERNAL LIAISONS:

Work continues on the establishment of a Nonreimbursed Space Act Agreement between NASA Ames and a local research laboratory for the study of the impact of latency on operator behavior in virtual environments. Currently, the agreement is being reviewed by NASA lawyers.

ISSUES:

None.