Back to results
US 2003/0199752 A1Published application
Method, apparatus and program for restoring phase information
AssigneeFuji Photo Film Co., Ltd.
InventorHideyuki Sakaida
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeFuji Photo Film Co., Ltd.
InventorHideyuki Sakaida
Estimating the term…
In a phase information restoring method using a phase contrast method, the estimated accuracy of phase is enhanced. The phase information restoring method of restoring phase information of radiation transmitted through an object on the basis of a plurality of image signals respectively obtained by detecting intensity of radiation transmitted through the object on a plurality of planes different in distance from the object, comprises the steps of: obtaining a differential signal representing difference between a first image signal and a second image signal; subjecting any one of the plurality of image signals to a suppressing process or a removing process for high spatial frequency components thereof so as to generate a third image signal; obtaining Laplacian of phase with respect to the differential signal and the third image signal; and restoring phase information by applying an inverse Laplacian operation to the Laplacian of phase.
A method of restoring phase information of radiation transmitted through an object on the basis of a plurality of image signals respectively obtained by detecting intensity of radiation transmitted through the object on a plurality of planes different in distance from the object, each of the plurality of image signals representing radiation image information on the plurality of planes, said method comprising the steps of:
An apparatus for restoring phase information of radiation transmitted through an object on the basis of a plurality of image signals respectively obtained by detecting intensity of radiation transmitted through the object on a plurality of planes different in distance from the object, each of the plurality of image signals representing radiation image information on the plurality of planes, said apparatus comprising:
A phase information restoring program for restoring phase information of radiation transmitted through an object on the basis of a plurality of image signals respectively obtained by detecting intensity of radiation transmitted through the object on a plurality of planes different in distance from the object, each of the plurality of image signals representing radiation image information on the plurality of planes, said program actuating a CPU to execute the procedures of:
Dependencies are inferred from the claim text.