Alignment apparatus and program therefor
AssigneeFUJIFILM Corporation
InventorTakahiro KAWAMURA
Life of this patent
Estimating the term…
Abstract
An alignment apparatus and a program that improve the accuracy of alignment between two radiation images are provided. For each of portions of the two radiation images, evaluation means calculates an evaluation value that evaluates an amount of positional shift regarding a tissue radiographed in the radiation images, and search condition setting means sets for each of the portions a condition of search for corresponding positions between the two radiation images based on the evaluation value. According to the search condition having been set, alignment means searches for the corresponding positions between the two radiation images, and aligns the two images by warping at least one of the radiation images.
Claims11
An alignment apparatus comprising:
- radiation image storage means for storing two radiation images obtained by irradiating radiations on a predetermined body part including two or more tissues;
- evaluation means for calculating an evaluation value that evaluates an amount of positional shift of the radiographed tissues between the two radiation images, in each of portions of the two radiation images;
- search condition setting means for setting for each of the portions of the two radiation images a condition of search for corresponding positions between the two radiation images, according to the evaluation value obtained by the evaluation means regarding a corresponding one of the portions of the two radiation images;
- and
- alignment means for aligning the two radiation images by searching for the corresponding positions according to the search condition having been set and by warping at least one of the two radiation images.
A computer-readable recording medium storing a program that causes a computer to function as:
- evaluation means for calculating an evaluation value that evaluates an amount of positional shift of two or more tissues radiographed in two radiation images obtained by irradiating radiations on a predetermined body part including the two or more tissues, in each of portions of the two radiation images;
- search condition setting means for setting for each of the portions of the two radiation images a condition of search for corresponding positions between the two radiation images, according to the evaluation value obtained by the evaluation means regarding a corresponding one of the portions of the radiation images;
- and
- alignment means for aligning the two radiation images by searching for the corresponding positions between the two radiation images according to the search condition having been set and by warping at least one of the two radiation images.
Dependencies are inferred from the claim text.