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    • 8. 发明公开
    • WHITE REFERENCE CALIBRATION IN A DUAL DIGITIZER
    • 双数字化仪中的白色基准校准
    • EP1459517A1
    • 2004-09-22
    • EP02791315.1
    • 2002-11-26
    • Howtek Devices Corporation
    • BATCHELDER, LeeLEHMAN,, Richard
    • H04N1/40
    • H04N1/12H04N1/0287H04N1/02895H04N1/10H04N1/193H04N2201/0404H04N2201/0412H04N2201/0418
    • A dual digitizer (100) for digitizing both transparent and reflective data mediums is provided where light from the reflective illuminator (130) reflects off the transparent illuminator when the transparent illuminator (110) is off to provide a white reference signal for use in calibrating the dual digitizer. A method of calibrating a dual digitizer for reflective scans includes: digitizing a transparent data medium; calibrating the dual digitizer to establish a white reference signal, the calibrating step including generating a light beam, reflecting a first portion of the light beam off a transparent illuminator, and utilizing the first portion of said light beam to establish the white reference signal; and digitizing a reflective data medium. The dual digitizer may be used in medical applications to digitize a transparent data medium such as an X-ray film.
    • 提供用于数字化透明和反射数据介质的双数字化器(100),其中当透明照明器(110)关闭时,来自反射照明器(130)的光反射离开透明照明器以提供白色参考信号以用于校准 双数字化仪。 校准用于反射式扫描的双数字化器的方法包括:数字化透明数据介质; 校准所述双数字化器以建立白色参考信号,所述校准步骤包括产生光束,将所述光束的第一部分反射离开透明照明器,并且利用所述光束的所述第一部分来建立所述白色参考信号; 并数字化反射数据介质。 双数字化仪可以用于医疗应用以数字化诸如X射线胶片的透明数据介质。