Patent ID: 8764196

Claim:
A test pattern for use in aligning a stereoscopic projection system, the test pattern comprising: a first image and a second image forming a stereoscopic image pair; the first image having a first pattern including a first plurality of adjacent light and dark regions; the second image having a second pattern including a second plurality of adjacent light and dark regions, wherein the second pattern is a conjugate of the first pattern with respect to positioning of the respective pluralities of adjacent light and dark regions; wherein a combination of first and second images projected by the stereoscopic projection system indicates at least one of: an orientation error, a convergence error and a brightness balance error, in the stereoscopic projection system, wherein: the orientation error associated with a horizontal offset between the first and second projected images is indicated along substantially vertical regions of the projected first and second patterns; the convergence error associated with a vertical offset between the first and second projected images indicated along substantially horizontal regions of the projected first and second patterns; and the brightness balance error is indicated by adjacent light and dark regions in a pattern substantially similar to at least one of the first and second patterns.