Method and apparatus for correcting digital X-ray images

An image manipulation system, comprising:

• 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 configured to store offset pixel values for each of a plurality of pixel locations making up the detector panel;
• a subtractor configured to subtract 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 configured to shift down the subtracted result by a predetermined number of bits to provide a bit-shifted result;
• and
• an adder configured to add the bit-shifted result to the offset pixel value to provide an added result,
• wherein a corresponding memory location of the offset memory that corresponds to the particular pixel location is updated with the added result.

An image manipulation method, comprising:

• receiving digital pixel data corresponding to a pixel level for a particular pixel location on a detector panel;
• storing offset pixel values for each of a plurality of pixel locations making up the detector panel;
• subtracting an offset pixel value corresponding to the particular pixel location, as obtained from the storing step, from the received digital pixel data, to provide a subtracted result;
• shifting down the subtracted result by a predetermined number of bits to provide a bit-shifted result;
• adding the bit-shifted result to the offset pixel value to provide an added result;
• and
• updating a corresponding memory location of the storing means that corresponds to the particular pixel location with the added result.