1. A method for a scalable video coding, comprising: estimating a motion field (p) of a sequence of photograms (f 1 , f 2 ,. .. , f T ) including a plurality of space resolution levels (K,. .. , K−m,. .. , K−M), wherein the plurality of space resolution levels are between a minimum resolution level (K−M) and a maximum resolution level (K), wherein estimating the motion field comprises: computing the motion field for each one of said space resolution levels by a minimization of a function, wherein, for each level which is different from the minimum space resolution level, said function comprises a regularization term including a constraint inherited by a space resolution level which is immediately lower than the level, wherein the constraint represents a difference between a low-pass component of a current motion field for the level and a previously computed motion field for the space resolution level which is immediately lower than the level.