A technique for encoding an interlaced picture comprises {HEAD ~ the steps} of rearraying the interlaced picture on a scanning line basis, splitting the re arrayed picture into {TAIL ~ a plurality} of first block portions and splitting the re arrayed picture into a plurality of second block portions 
A technique for encoding an interlaced picture comprises { HEAD ~ the steps } of rearraying the interlaced picture on a scanning line basis , splitting the re arrayed picture into { TAIL ~ a plurality } of first block portions and splitting the re arrayed picture into a plurality of second block portions
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