Patent ID: 7170593

Claim:
A method for reviewing a defect on a specimen using a scanning electron microscope (SEM) comprising: positioning a defect that is present on a specimen to be reviewed within a field of view of the SEM based on location data that was previously obtained by performing an inspection of the specimen using an inspection tool; imaging the specimen including the defect with the SEM N times and producing N frames of images; forming an SEM image of the specimen including the defect by integrating the N frames into a single image; dividing the SEM image into plural local areas; sequentially matching an image of one of the local areas with images of the other local areas and selecting a selected local area having a pattern that best matches a pattern in said one of the local areas; generating a differential image between the image of one of the local areas and an image of the selected local area; determining defect location information by processing the differential image; and extracting a defect image from the first SEM image based on the defect location information.