Patent ID: 8588499
Filing Date: 2013-11-19
Classification: G01N,G06T,H01J

Abstract:
1. A method for processing images using an observation device including: an irradiation device for irradiating an object to be observed with electron beams or X-rays; a detector for detecting responses of the object occurring as a result of irradiation thereof; a holder unit for holding the object; a tilting device capable of arbitrarily setting a tilt angle of the object, comprising the following steps of: tilting the object at predetermined angle steps; storing the images which are obtained as 1st to Nth image data observed at respective tilt angles; performing alignment calculation to align the stored 1st to Nth image data; generating an initial reconstructed image from a projection image of the object; projecting the reconstructed image at predetermined angles to generate and store 1st′ to Nth′ image data; performing error calculation to calculate errors in corresponding pixels between the 1st to Nth images and the 1st′ to Nth′ images; determining a processing priority order on the basis of the errors; performing density calculation to calculate a density of pixels for each gradation level; determining a processing priority order on the basis of the densities; and changing a gray level of each pixel in the reconstructed image in each of the processing priority orders.