Method for estimation of object boundaries in moving picture

A method for estimating an object boundary of a moving picture is provided to estimate a boundary of a background and a user object during a video call or video communication. In the first frame of a moving picture, an initial object boundary is presumed so that an object and a background are divided(210). Each color probability density function is estimated about the divided object and background(220). A boundary strip having a predetermined width is generated around an object boundary of the previous frame along with the object boundary of a previous frame in a current frame. A coherence probability density function of the boundary strip is presumed(230). Energy minimization is performed(240).