| 摘要 |
PROBLEM TO BE SOLVED: To detect smoothly a positional deviation between eyeground images including a rotational movement.SOLUTION: An eyeground image processor includes: a first collation region acquiring means for acquiring small region images from a first eyeground image respectively as first collation regions; a second collation region acquiring means for acquiring, as second collation regions, a plurality of small region images corresponding to the first collation regions from a second eyeground image which is the image of the same part as the first eyeground image; and a positional-deviation detection means for detecting an amount of a positional deviation between the first eyeground image and the second eyeground image, while having a movement-amount calculating means for calculating a movement amount for every collation region of the respective first collation regions and the second collation regions corresponding to each other, and a collation-region removing means for excluding the collation region of which movement amount is deviated, with respect to the movement amounts of the other collation regions in the respective collation regions of the respective first collation regions and the respective second collation regions corresponding to each other, from the respective collation region for detecting the amount of the positional deviation. |
