Identifying film frames in a video sequence

摘要

An apparatus for identifying automatically from an interlaced video recording the frames of an original cine-film sequence from which the video recording has been derived. The apparatus includes: means for evaluating for each successive pair of fields a function measuring correlation between adjacent odd and even picture lines taken from the first and second fields of the pair respectively; means for comparing the correlation function of each field pair with that of at least one neighbouring pair in the sequence; and means for identifying pairs with greater correlation than their neighbours as being derived from the same original film frame. The original frames are reconstructed and fed to an MPEG motion picture encoder to obtain high quality compressed video. Also provided is automatic scene cut detection which allows adaptive operation of the MPEG encoder. <IMAGE>