(a) obtaining a motion orientation component, including the steps of: creating a first graph G1 using spatio-temporal derivatives of the plurality of images by deriving an edge capacity function from a cost function of: min ?? ??? ??? i ??? S ??? ??? ??? i ??? ??? N i ??? ??? ?? 1 ??? ??? ?? i - ?? i ??? ??? - ??? i ??? S ??? ??? ln ( P ??? ( ?? ??? ??? I di ) ) wherein S is a set of all pixels, N