Patent ID: 8525112
Filing Date: 2013-09-03
Classification: B82Y,G01Q

Abstract:
1. A method of topographically characterizing a workpiece, comprising: scanning the workpiece with a scanning probe along a first directional grid, thereby scanning a reference surface and an area of interest subportion of the reference surface, at a variable data point density including a first data point density outside the area of interest and a second data point density inside the area of interest to derive a first digital file characterizing topography of the workpiece; scanning the reference surface and the area of interest with the scanning probe along a second directional grid that is substantially orthogonal to the first directional grid and at a constant data point density to derive a second digital file characterizing topography of the workpiece; and executing computer-readable instructions stored in memory that generate a topographical profile of the workpiece in relation to the first and second digital files.