Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mean depth estimates as a function of surface depth (in cm) for each apparatus: HMD (triangles), PTE (circles), and stereoscope (squares), for the near and far viewing distances (filled and open symbols, respectively) under binocular viewing conditions for physical-first observers (n = 8). The inferred viewing distance is annotated for each condition (in cm). The dashed line represents accurate depth estimates and error bars represent the standard error of the mean.
