Image processing system for producing an attenuation map of a scanned image.

摘要

An image processing system including attenuation estimation logic 6 for estimating local attenuation coefficient values for segments of a scanned image from the amplitude values of scanned image pixels within said segments has micro-segmentation logic 3 for determining average amplitude values for micro-segments of the image, the micro-segments being smaller than the segments of the image and the average amplitude values of the micro-segments being used for estimating the attenuation coefficient values for the segments of the image. The invention enables individual features to be more clearly identified in the attentuation map than with prior images processing systems without the micro-segmentation logic with the result that it is more easy for the operator of the system to interpret the images. <IMAGE>