Real-time two-dimensional filtering of video signals

摘要

A method and device for real time processing of analog signals, such as video signals, representative of frames of data acquired in row order in a two dimensional field. The incoming signal is processed (for example filtered) by analog means, transposed to column order, processed again by analog means, and transposed back to row order. The transpositions are done by digitizing each frame of the signal, transposing the digital signal, and converting the transposed digital signal back to analog form. The process can be pipelined to be accomplished in real time with only a constant delay of two frames.