Patent ID: 7329867

Claim:
An electron beam system connected to an electron beam device having an electron beam source for emitting an electron beam; an electron optical system for irradiating the electron beam on a sample; a sample holder for holding the sample; a sample tilting section for relatively tilting the sample holder and the electron beam so that a stereo image of the sample can be acquired; and an electron beam detecting section for detecting an electron beam emitted from the sample, comprising: a reference image selecting section for selecting one of right and left images for a stereo image obtained from the electron beam detecting section, as a reference image; a first correction factor measuring section for obtaining a first image correction factor which distorts the non-reference image into the distortion state of the reference image using the correspondence between the right and left images: a first image converting section for converting the non-reference image using the first image correction factor obtained in the first correction factor measuring section; an image coordinate transforming section for performing a coordinate transformation of the reference image and an image converted from the non-reference image in the first image converting section to images which can be obtained when the relative tilt angle created by the sample tilting section is in a standard state; and a coordinate measuring section for obtaining the shape or coordinate values of the sample included in a stereo image composed of the reference image and the non-reference image which have been subjected to a coordinate transformation in the image coordinate transforming section.