The present invention without using the chart images like a special hardware configuration and image correction, image distortion due to characteristics of the scanner to be able to obtain the corrected image.
A parameter processing unit 141, the adaptive optics SLO scanner apparatus 200 extracts the reference signal of the scanner output during one reciprocal scanning a predetermined region of the eye, sampling criteria the reference signal as the position, the adaptive optics based on the electric signal obtained by the photoelectric conversion means SLO apparatus 200 to generate the sampling data sequence of forward and backward scans, the sampling data in the forward scan and backward scan of the sampled data sequence of the reciprocal scanning evaluate the correlation of these by comparing the sequences, it corrects the sampling reference position based on the result of the evaluation. Then, the image construction unit 142, based on the corrected sampled reference position in the parameter processing unit 141, constituting the image data based on sampling data sequence of reciprocal scanning.
.FIELD 1