Multi-projector display system calibration

A method comprising:

• receiving a first image, wherein the first image includes a plurality of substantially parallel first stripes, wherein the first image conforms to a virtual display space, and wherein the virtual display space comprises a first plurality of first pixel locations;
• projecting the first image from a projector onto a surface, wherein the projector is described by a projector space comprising a second plurality of second pixel locations;
• capturing with a camera a second image of the first image projected onto the surface, wherein the second image conforms to the virtual display space and the first plurality of first pixel locations each has a corresponding camera coordinate value;
• examining rows or columns in the second image to determine a start and an end of Gray code values;
• modifying the second image based upon the examining of the rows or columns to create a modified second image;
• and
• mapping one Gray code value or a list of Gray code values in the modified second image to each of a plurality of the camera coordinate values.