Patent ID: 8953855
Filing Date: 2015-02-10
Classification: G06K,G06T

Abstract:
1. A computer-implemented method for extracting an edge of a pattern from an image obtained by a charged particle beam apparatus, the method comprising computer-implemented method steps of: (a) detecting a first edge candidate by specifying a peak position of a profile which is formed by performing projection processing of an image obtained by the charged particle beam apparatus; (b) detecting a particular pixel, as a second edge candidate, from the image from which the first edge candidate is detected, the particular pixel being detected such that a difference between a pixel value of a first pixel and a pixel value of a second pixel which is different from the first pixel is significant, the first pixel and the second pixel being in a predetermined positional relationship with respect to the particular pixel, respectively; and (c) extracting a pixel where the first edge candidate and the second edge candidate coincide with each other, as the edge of a pattern.