Patent ID: 7657078
Filing Date: 2010-02-02
Classification: G06T

Abstract:
1. A method of reviewing a defect, comprising the steps of: utilizing an inspection apparatus to pick up an image of an area including a defect on a sample having a surface provided with a pattern, so as to acquire the image of the area on the sample including the defect with a first magnification; comparing the acquired image of the area on the sample including the defect with the first magnification with a reference image having the first magnification so as to extract a defect; picking up an image of an area on the sample including the extracted defect to acquire an image of an area on the sample including a defect with a second magnification which is larger than the first magnification; comparing the acquired image of the area on the sample including the defect with the second magnification with a reference image having the second magnification so as to extract a defect; and classifying the extracted defects depending on characteristic amounts of the defects, wherein the second magnification reference image is an image prepared by estimating a non-defective state which does not include any defect from the acquired image of the area including the second magnification defect.