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