1. A method of motion estimation for a group of at least one image element in a frame associated with a time instance in a video sequence, said method comprising the steps of: determining a representation of a global motion of image element property values from at least a portion of a previous frame associated with a previous time instance in said video sequence to at least a portion of said frame, wherein the determining the representation of the global motion comprises estimating elements of a matrix A and a vector b based on a motion set, and wherein the motion set comprises, for each group in said at least a portion of said frame, a respective motion representation referring to an associated group in said previous frame, and wherein the global motion is represented as a vector v=Ax+b, wherein v=[v x y y ] T is the global motion representation, v x is a first vector component of said global motion representation in a first direction, v y is a second vector component of said global motion representation in a second perpendicular direction, and x=[x y] T is an image element position in said frame; identifying an uncovered group of at least one image element in an uncovered region of said frame based on said global motion representation; and assigning said global motion representation to said uncovered group as motion estimation for said uncovered group.