The COLOR Workflow - 3D Postproduction: Stereoscopic Workflows and Techniques - page 174

6.6.2.3 Issue: Highlight Mismatch
We include in the color workl ow issues related to sudden increases in
brightness in portions of the 3D frame, such as highlights, l ares, rel ections
and l ashes. To be sure, these events are everyday occurrences in 2D and 3D
imaging. The problem in 3D occurs when these events happen:
• only in L and not R, and vice versa
• in both L or R, but to a different degree in each
For example, an imaging system might record a strobe l ash in only the
R imagery because it is outside the i eld of view of L imager. Or a stage
light might shine directly into R, but only obliquely in L. As with the
color error corrections, lighting error corrections need to be evaluated to
determine if they are actual issues in the context of your show. A concert
show with thousands of l ashing mobile phone cameras will have different
evaluation criteria than a car commercial that has rel ective window glass
in every shot.
Difference in
overall lighting
between L and R
Flash/Flare
occurs only in L
or only in R
Flash/Flare occurs
in differing
degrees in L and R
exaggerated for clarity
Figure 6.6 Highlight Mismatch.