Patent Document ID: 20130054193
Application ID: 13576287
Patent Status: 0

Claim One:
1. A method for producing a surface shape map of at least one surface of an object and independent of relative motion of the object, the method comprising: (a) providing a plurality of distance sensors arranged to measure changes in surface height on at least one surface of the object; (b) moving the object a distance relative to the plurality of sensors in a selected direction; (c) taking sensor readings with at least some of the plurality of sensors of the distance moved by the object in the selected direction at measured increments of relative movement of the object to the plurality of sensors, wherein the sensor readings include measured positions of similar points on the surface of the object from different sensors of the plurality of sensors, the measured position of the similar points producing a sequence of point measurements; (d) determining relative motions of the plurality of similar points by comparing the measured positions of similar points at different times; and (e) subtracting the relative motions of the plurality of similar points from sensor readings to obtain the surface shape map.