| 摘要 |
A hologram reproduced image position detecting method used in a hologram apparatus which perfoming an image formation with light reproduced from a recording medium where a data page including a marker and a data area that have been displayed on a spatial light modulator is recorded, on an image sensor having a larger number of pixels than the spatial light modulator, thereby obtaining a reproduced image of the data page to reproduce the data page. The detecting method comprises the steps of storing a template image into which the marker has been interpolation-expanded, beforehand; oversampling the reproduced image of the data page in the image sensor to obtain a detected image; and performing a template matching process on the detected image using the template image, thereby detecting the position of the marker when recorded.
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