Figure 2. A Sample Survey Question Demonstrating Volunteer 1 as an Example.

The photographs of each of the 5 volunteers were displayed in 4 different views (frontal, basal, right, and left). The survey respondents were asked to rate each view of the 3-dimensional (3-D) model as it compares to the above images. The scores are graded on a Likert-type scale from 0 to 10, where 0 is completely different from the photograph, and 10 is identical to the photograph.