O_InteraxialShifter

The O_InteraxialShifter plug-in lets you reduce the interaxial distance of stereo images; that is, the distance between the two cameras. Using this plug-in, you can generate two new views at specified positions between the original images.

Inputs and Controls

Connection Type	Connection Name	Function
Input	Fg	An optional mask that delineates foreground regions from background. The mask ensures that disparities are constrained to remain within each delineated region. Note that masks should exist in both views, and O_InteraxialShifter expects alpha values of either 0 (for background) or 1 (for foreground).
Source	A stereo pair of images. Note: If disparity channels aren’t embedded in the images, you should add an O_Solver and an O_DisparityGenerator node after the image sequence.

Connection Type

Connection Name

Function

Input

An optional mask that delineates foreground regions from background. The mask ensures that disparities are constrained to remain within each delineated region. Note that masks should exist in both views, and O_InteraxialShifter expects alpha values of either 0 (for background) or 1 (for foreground).

Source

A stereo pair of images.

Note: If disparity channels aren’t embedded in the images, you should add an O_Solver and an O_DisparityGenerator node after the image sequence.

Control (UI)	Knob (Scripting)	Default Value	Function
O_InteraxialShifter Tab
Views to Use	viewPair	Dependent on Source	Sets the two views you want to use to create the new views. These views will be mapped for the left and right eye.
Interpolate Left Position	leftInterpolatePosition	0.25	Sets a position between the views where you want to generate the left view. The position is expressed as a fraction of the distance between the views.
Interpolate Right Position	rightInterpolatePosition	0.75	Sets a position between the views where you want to generate the right view. The position is expressed as a fraction of the distance between the views.
Filtering	filtering	Normal	Sets the quality of filtering: • Extreme - uses a sinc interpolation filter to give a sharper picture but takes a lot longer to render. • Normal - uses bilinear interpolation which gives good results and is a lot quicker than extreme.
Warp Mode	warpMode	Normal	Sets the method to use to create the new views: • Simple - this is the quickest option, but may produce less than optimal results around image edges and objects that are visible in one view but not the other. • Normal - this is the standard option, with more optimal treatment of image edges and occlusions. • Occlusions - this is an advanced option that may improve the results. • Sharp Occlusions - this option is similar to Occlusions, but produces fewer artifacts where the disparity fields are generated from 3D CG sources.
Foreground Component	mask	None	Sets the channel to use as to delineate foreground regions from background. The mask ensures that disparities are constrained to remain within each delineated region. • None - use the entire image area. • Source Alpha - use the alpha channel of the Source clip. • Source Inverted Alpha - use the inverted alpha channel of the Source clip. • Mask Luminance - use the luminance of the Fg input. • Mask Inverted Luminance - use the inverted luminance of the Fg input. • Mask Alpha - use the alpha channel of the Fg input.