Overview - 3D Postproduction: Stereoscopic Workflows and Techniques - page 27

Pseudoscopic Imagery

An example of a 3D issue that must always be resolved is the inadvertent
swapping of L and R in an image pair—a condition called pseudostereoscopic ,
or simply pseudoscopic . This error makes the image look “inside-out” when
viewed as a 3D frame ( Figure 1.13) . This is something that may or may not
be extremely obvious on i rst look. Despite its scientii c-sounding name, the
solution is simple and straightforward. Switch L and R, and view again. In most
cases this issue is a result of human error somewhere along the image path.
For example, a team member may have copied L imagery into a folder intended
for R imagery or vice versa or a cable may have been swapped. Though still
marginally viewable, pseudoscopic imagery fuli lls the criteria for must-i x issue
because it causes discomfort and discontinuity as well as interfering with the
creative intent of the show.

L

R

NORMAL

R
PSEUDOSCOPIC

L

Figure 1.13 Normal 3D Imagery vs. Pseudoscopic 3D Imagery.