inverse transforming the demultiplexed signals to obtain {TAIL ~ image domain signals representative} of {HEAD ~ subsampled spatially offset frames}; and 
inverse transforming the demultiplexed signals to obtain { TAIL ~ image domain signals representative } of { HEAD ~ subsampled spatially offset frames } ; and
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH