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# 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.

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.