| 摘要 |
An identification document is provided comprising a printable layer, a computer readable data storage element, and a computer readable calibration element (32). The computer readable data storage element is formed on the printable layer and comprises a plurality of pixels, wherein each pixel has one of a predetermined plurality of colors. The computer readable calibratio n element (30) is formed on the printable layer and comprises a plurality of pixels (40, 42a-42h) and includes information (44, 42b) enabling a determination of the pixel size in the computer readable data storage elemen t and also a determination of at least a portion of the predetermined pluralit y of colors (41,46).
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