X-RAY RADIOGRAPH PROCESSOR

摘要

PURPOSE:To extract a picture component including a high frequency component without increasing a noise component by applying differential processing with a low energy picture and a picture obtained by an energy difference processing from the low energy picture and a high energy picture. CONSTITUTION:From a low energy picture 1 resulting from logarithmic conversion of a transmitted picture with a low energy X-ray and a high energy picture 2 resulting from logarithmic conversion of a transmitted picture with a high energy X-ray, differential processing is applied by using a coefficient to erase a bone part with differential processing 7 and a resulting soft structural picture is used as a processing picture 11. Then the differential processing 8 is applied to apply differentiation by multiplying a proper coefficient with the low energy picture 1 and the soft structural picture 11 to obtain a picture of the bone as the processing picture 12. Thus, a picture with less increase in the noise component is obtained in comparison with the method of obtaining a bone picture through the differential processing with the low energy picture and the high energy picture.