| 摘要 |
A method of determining and correcting non-linear detector pixels by: recording a test image illuminated by X-ray beams with a detector constructed pixel by pixel; performing offset correction and gain correction of the recorded test image to establish a corrected test image; filtering the corrected test image with a suitable filter; calculating the difference between the filtered test image and the corrected test image; identifying as non-conforming all pixels in the difference calculation whose grey levels are outside predeterminable thresholds; and classifying the non-conforming pixels as non-linear detector pixels. For improved displays, the non-conforming pixels can be visually represented with a gray scale value the same as, or similar to, that of an adjacent display pixel that corresponds to a conforming detector pixel.
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