Patent ID: 8965102
Filing Date: 2015-02-24
Classification: G01N,G06K,G06T

Abstract:
1. A method, comprising: providing a first pseudo-color image and a second pseudo-color image, wherein the first pseudo-color image is of a substrate scanned at a first point in time and the second pseudo-color image is of the substrate scanned at a second point in time, wherein the second point in time is at least one day later than the first point of time; determining, using an image analysis computing system, a difference between the first pseudo-color image and the pseudo-color second image, wherein the difference is provided as a gray-level value and wherein the difference represents a defect of the substrate at the second point in time; providing the gray-level value to a simulation model to generate an intensity profile associated with the gray-level value; and using the intensity profile to determine if the defect will image onto a photosensitive material in a photolithography process.