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