In a conventional block matching method , prediction efflcien じ y decreases and moreover it becomes dificult to produ じe a natural predicted image when a block inoludes an outline of a lnov 熱 g object . It is thought that this problem oan be overcome by dividing an image into variable −shape −blocks suitable for its contents , Frorn this point of view , 伽 s paper proposes a new motion compensation method which parti 亡 ions the prev [ ous image into variable − shape − blecks oQmpQsed Qf quadr 丘

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... ateral s so that their boundar 三 es can run paralIel wlth its principal contours Then texture − mapping usirlg pseudo Af近ne transformation is carried out 孟 n eve17 block to produce a predicted image. ShnulatiQri results indicate that this method can provide not only higher predietion e 爺 Giency but also mGre natural