Patent ID: 8197070

Claim:
A method for identifying predefined point locations within a captured-image, said method comprising the following step: (a) defining a calibration image having a plurality of said predefined point locations distributed within it, each of said plurality of predefined point locations being uniquely identified and distinguished from each other within the calibration image by a unique combination of adjacent colors around each predefined point location; (b) generating said captured-image by capturing at least a portion of said calibration image; and (c) identifying point locations within the captured-image that correspond to predefined point locations in said calibration image according to their matching unique combination of adjacent colors, correlating the identified point locations within the captured-image to their corresponding predefined point locations within said calibration image; wherein in step (a), said calibration image includes: a first group of colored lines arranged in parallel to each other, each colored line being distinct from all other lines in said first group by color; a second group of colored lines arranged in parallel to each other, each colored line being distinct from all others lines in said second group by color, said second group of colored lines being arranged to intersect said first group of colored lines, wherein said predefined point locations are defined by the intersections of color lines from said first group with color lines from said second group, each of said intersections being defined by a unique combination of intersecting colors.