providing encoded signals corresponding to the encoded region, the encoded signals comprising a skip block designation, the skip block designation having been selected in accordance with a comparison between {HEAD ~ a current region} of {TAIL ~ an original image} and a reference region; and 
providing encoded signals corresponding to the encoded region , the encoded signals comprising a skip block designation , the skip block designation having been selected in accordance with a comparison between { HEAD ~ a current region } of { TAIL ~ an original image } and a reference region ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH