User Manual

Table Of Contents
The Viewer set to display an anaglyph stereo image in color
Floating Windows
Floating Windows are meant to correct for “Window violations,” where elements of the image
with negative parallax, that project forward from the screen plane towards the audience, are cut
off by the edge of the frame. In these instances, differences between the images being shown
to the left and right eyes can result in a visual paradox that’s difficult for viewers to reconcile.
Specifically, when a forward-projecting element is cut off by the left or right edge of the frame,
one eye sees things that the other eye does not.
If the subject is moving quickly, this may not be an issue, but if the cut off (or occluded) element
lingers onscreen, it causes problems for viewers that defeat the stereo 3D illusion. The viewer’s
binocular vision (or stereopsis) is providing one depth cue, while occlusion is providing a
completely different depth cue.
To fix this, you can use Floating Windows to crop the cut off object from the eye on the side of
the object that’s cut off, thus eliminating the portion of the stereo image that is unseen to the
other eye that causes the problem.
Floating Window controls
The objective of using Floating Windows is to manipulate the illusion of the viewer’s “window
into the scene.” In addition to fixing Window violations, it has been proposed that Floating
Windows can be used as a creative tool by manipulating the geometry of this Window to alter
subtly the viewer’s perception of the screen orientation.
By cropping the right-hand side of the right-eye frame, you also create the illusion that
the right edge of the “window into the image” is tilted farther forward toward the viewer.
By cropping the left-hand side of the left-eye frame, you create the illusion that the left
edge of the Window is tilted toward the viewer.
If you crop both the left-hand side of the left-eye frame and the right-hand side of the
right-eye frame, you create the illusion that the entire plane of the “virtual screen” is
coming toward you.
If you apply opposite-angled Windows to the left- and right-eye clips at one or both of
the edges of the frame, it appears to “tilt” the screen toward or away from the viewer.
Chapter – 172 Stereoscopic Workflows 3524