A Model for the Random Video Process

摘要: For problems concerning the transmission of video signals, it is often desirable to know statistical distribution power in frequency domain for signal process. It convenient have a model, involving only few essential parameters, which will satisfactorily characterize spectral density random signal. This paper proposes model picture and derives expressions second-order properties obtained from conventional scanning operation on picture. The typical material make valid certain approximations lead especially simple, closed-form density. continuous part expressed as product three factors, characterizing separately influence point-to-point, line-to-line, frame-to-frame correlation. parameters representative there observed an extreme concentration near multiples line scan frame rates. An illustrative example use optimum linear filtering problem included.