Method for calculating three-dimensional image data set of image object from multiple two-dimensional image data sets of image object, involves reading weight factor from table for one time for group of lines, and using factor for all lines

摘要

The method involves mathematically deriving an image object from a three dimensional (3D)-radon-inversion formula. A numerical value is calculated from image points of lines (L1-L3) in data of a two-dimensional (2D)-image data set, where the data is associated to a 2D-image point pattern. The numerical value is multiplied with a weight factor during filtering. The factor is calculated or read from a reading table for one time for a group of the lines. The factor is used for the numerical value for all lines of the group. A 3D-image data set is calculated according to a Clack-Defrise-method.