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X-ray examination apparatus and means for noise reduction for use in an x- ray examination apparatus
X-ray examination apparatus and means for noise reduction for use in an x- ray examination apparatus
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机译:X射线检查设备以及用于x射线检查设备中的降噪装置
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摘要
Noise reduction for use in an x-ray examination apparatus is provided for performing weighted temporally averaging in dependence on an amount of motion in parts of successive x-ray images. Further noise reduction is performed by combining temporal averaging with spatial filtering and motion detection. This reduces both noise breakthrough and the occurrence of trailers. In particular, noise breakthrough is appropriately reduced by hi-temporal filtering. Threshold-values for discriminating between noise and motion are computed on the basis of images generated by the x- ray detector.
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