ALIGNMENT APPARATUS AND PROGRAM THEREFOR
First Claim
1. 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.
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Accused Products
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.
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Citations
11 Claims
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1. An alignment apparatus comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer-readable recording medium storing a program that causes a computer to function as:
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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.
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Specification