Patent ID: 8374818

Claim:
A method for generating calibration data for an inspection apparatus, the method comprising: providing a calibration substrate, wherein the calibration substrate comprises a plurality of component fiducials; (a) moving a camera over a first component fiducial; (b) imaging, with a vision system, the first component fiducial, wherein the vision system includes the camera; (c) measuring, with the vision system, an X position and a Y position for the first component fiducial; (d) calculating, with a computer, an X calibration offset value and a Y calibration offset value of the first component fiducial, wherein the X calibration offset value is based upon the X position, and wherein the Y calibration offset value is based upon the Y position; repeating steps (a)-(d) for each of the component fiducials to generate pairs of XY calibration offset values for the plurality of component fiducials; and placing, with the computer, the pairs of XY calibration offset values in an XY map.