METHOD AND APPARATUS FOR ELECTRO-OPTICALLY CONVOLUTING A ONEDIMENSIONAL SIGNAL

摘要

There is disclosed a method and apparatus for convoluting a signal representing a profile formed during X-ray tomography and a filter function wherein a one-dimensional image of the signal is expanded in a direction transverse to the line by means of an optical system whereby the expanded image is moved past masks in the direction of the line with the masks containing regions that are either fully transmissive or fully non-transmissive.