Metrics and Models for the Perceptual Design of Virtual Transparency - Progress (08/98)

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The haploscope is being brought to Virtual Research for realignment. Virtual research has assembled several possible new backlights with diffusing material provided by Ames and has developed a configuration that will double the display luminance. It will be installed into the haploscope during realignment.

The distortion field in the virtual environment room has being remeasured for improved spatial calibration and the new larger distortion field has been visualized in MATLAB

Psychophysical functions have been measured with improved blocking techniques. The false alarm rate appears to be constant but longer blocking will be investigated to determine if this remains true under generalized conditions. Sensitivity to changes in rendering latency during head and body movement has been tested in addition to that during hand movement. Initial estimates show sensitivity during head/body movement is about half of that during hand movement, but dprines have not yet been stably estimated.

Publication activity

None.

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. Extensions to include studies of motion sickness in collaboration with Pat Cowings laboratory in SL have begun

ISSUES:

None.