Patent ID: 6529622
Filing Date: 2003-03-04
Classification: H04N

Abstract:
A method for identifying defective pixel regions of a discrete pixel x-ray detector, the method comprising the steps of:(a) generating a plurality of first signals based upon output by the x-ray detector representative of each pixel region in a series of dark images by averaging first output signals for each pixel over the series of dark images; (b) comparing the averaged first signals to first desired parameter values derived from the first output signals to identify a first set of defective pixel regions; (c) generating a plurality of second signals based upon output by the x-ray detector representative of each pixel region in a series of exposed images by averaging second output signals for each pixel over the series of exposed images; and (d) comparing the averaged second signals to second desired parameter values derived from the second output signals to identify a second set of defective pixel regions.