Patent ID: 7627165
Filing Date: 2009-12-01
Classification: G03F,G06T

Abstract:
1. An image correction device for using an inspection reference pattern image of a workpiece being tested and a pattern image under test to generate a corrected pattern image, said device comprising: a pattern extraction unit operative to cut a pattern as a cut-and-paste pattern out of a pattern existence region of each of the reference pattern image and the under-test pattern image; a pattern pasting unit operative to paste the cut-and paste pattern in pattern-less blank regions of the reference pattern image and the under-test pattern image to thereby generate a pasted reference pattern image and a pasted test pattern image; an equation generation unit operative to generate by linear predictive modeling a set of simultaneous equations for the pasted reference pattern image and the pasted test pattern image; a parameter generation unit operative to solve the simultaneous equations and obtain more than one model parameter; and a corrected pattern image creation unit operative to use the model parameter to apply the linear predictive modeling to the pattern image for creation of a corrected pattern image.