Overview - 3D Postproduction: Stereoscopic Workflows and Techniques - page 16

either as sequences of i les (e.g., DPX or TIF i les or as video streams e.g.
QuickTime movies) ( Figure 1.5 ).
Image pairs should travel together throughout the post process and maintain
their paired relationship through all post manipulations and processes. Part
of the job of the 3D post team is to make sure L/R image pairs maintain
their paired relationship throughout the project either as:

• individual L or R i les or movies (known as “discrete” L and R) or
• combined

L and R i les or movies (known as “muxed” short for

“multiplexed”)

Muxed 3D i les combine L and R image pairs into series of single frames or
into a single video stream of synced L and R image pairs.

1.3.3 3D Frames

Image pairs generate 3D Frames. There is nothing inherently 3D about either
the L or R image as discrete or muxed image pairs. Each is simply a 2D image
of a slightly different view of the scene that unfolds in front of the imaging
system. It is only when we view image pairs under certain conditions that
they become 3D frames , or “technically correct, human viewable image pairs.”
(Figure 1.6) Establishing and maintaining the conditions under which image
pairs can generate viable 3D frames is main topic of this topic.

R

L

L

L1 L2 L3

L4

L ...

as dual "discrete"
frames or video stream

OR

R

R1 R3 R4

R. ..

R2

LR

as single "muxed"
frames or video
streams
IMAGE
PAIR
SEQUENCES

IMAGER(S)
CAMERA(S)

IMAGE
PAIRS

Figure 1.5 3D Image Pairs.