| 摘要 |
PROBLEM TO BE SOLVED: To display at least two images of the same object to be comparatively read with improved performance for comparative reading images. SOLUTION: The structural relation among corresponding positions of three images displayed on an image display screen 11 are previously found by a corresponding position calculating means 14. Then the same structure/ organization as that indicated and displayed by a first marker C1 in a subtraction diachronic image Su among the displayed three images is indicated and displayed by a second marker C2 in a first original image P1 or by a third marker C3 in a second original image P2.
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