METHOD AND APPARATUS FOR LINEARLY FILTERING TWO- DIMENSIONAL SIGNALS

摘要

Title: Method and apparatus for linearly filtering two-dimensionalsignals.Abstract of the DisclosureA method of linearly filtering spatially two-dimensional signals. Thesignal to be filtered is applied to an electronic imaging system.For providing a scanning movement, the signal is deflected in the electronicimaging system and swept over at least one mask in which a desiredcorrective filter function is established in the form of a specifictransmission characteristic, The light passed by the mask is detected bymeans of at least one photodetector placed behind the mask. The outputsignal of the photodetector is a representation of the filtered two-dimensional signal as a function of the time.