Patent ID: 9589348
Date: 2017-03-07
CPC Classifications: G06T,H04N

Claim:
1. An optical calibration system comprising: a first planar grid including a first plurality of fiducial markers, the first planar grid positioned at a first angle to an alignment axis; a second planar grid including a second plurality of fiducial markers, the second planar grid positioned at a second angle to the alignment axis and a side of the first planar grid and a side of the second planar grid are adjacent to each other forming a line that is bisected by and perpendicular to the alignment axis; a light source configured to backlight the first planar grid and backlight the second planar grid in accordance with a display pattern; and a calibration controller configured to determine camera calibration information including an optical center of a VR camera using a plurality of captured images, wherein the plurality of captured images are received from the VR camera along the alignment axis that is positioned to image a portion of the first planar grid and a portion of the second planar grid, and the plurality of images includes at least a first image of the portion of the first planar grid with fiducial markers backlit and a second image of the portion of the second planar grid with fiducial markers backlit.