Method and apparatus for correcting digital X-ray images

Image analysis – Applications – Biomedical applications

Reexamination Certificate

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C382S132000

Reexamination Certificate

active

07120282

ABSTRACT:
An image correction system and method includes a digital data input unit configured to receive digital pixel data corresponding to a pixel level for a particular pixel location on a detector panel. An offset memory stores offset pixel values for each of a plurality of pixel locations making up the detector panel. A subtractor subtracts an offset pixel value corresponding to the particular pixel location, as obtained from the offset memory, from the received digital pixel data, to provide a subtracted result. A bit shifter unit shifts down the subtracted result by a predetermined number of bits to provide a bit-shifted result. An adder adds the bit-shifted result to the offset pixel value to provide an added result. A corresponding memory location of the offset memory that corresponds to the particular pixel location is updated with the added result. Information in the offset memory is utilized to correct a digital image.

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