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# Using O_InteraxialShifter

Note: O_InteraxialShifter requires disparity vectors and an occlusion mask to operate correctly.

To change the interaxial distance, do the following:

| 1. | If disparity vectors don’t yet exist in the script, insert an O_DisparityGenerator node after your image sequence to calculate the disparity vectors. See DisparityGenerator for how to do this.

| 2. | O_InteraxialShifter requires an occlusion mask. Insert an O_OcclusionDetector node after either the O_DisparityGenerator node (if you added one in the previous step) or the stereo image sequence.

| 3. | From the toolbar, select Ocula > Ocula 4.0 > O_InteraxialShifter to insert an O_InteraxialShifter node after the O_OcclusionDetector node.

| 4. | In the O_InteraxialShifter controls, select the two views you want to use for creating the new views under View to Use. The two views you select are mapped for the left and right eye.

| 5. | Use the Left Position and Right Position sliders to indicate where you want to build the new left and right views. The values are expressed as a fraction of the distance between the two views. For example, if the Left Position is set to 0.25, it is at a quarter of the total distance between the cameras.

| 6. | Attach a Viewer to the O_InteraxialShifter node. Your node tree should now look something like this:

| 7. | Adjust the Edges settings to get the best possible result. See O_InteraxialShifter Controls for more information.