1. An apparatus for reconstructing an occlusion region, comprising: an occlusion detector configured to receive data corresponding to a motion vector field of a video frame and to detect an occlusion region in the motion vector field, the occlusion region corresponding to one which does not have motion vectors or has inaccurate motion vectors; a contour separator configured to detect a contour between the detected occlusion region and a non-occlusion region and to separate the detected contour into a first contour and a second contour based on motion vectors of blocks included in the detected contour; an occlusion separator configured to separate the detected occlusion region into a first occlusion region adjacent to the first contour and a second occlusion region adjacent to the second contour; and an occlusion reconstructor configured to reconstruct motion vectors of the first occlusion region based on motion vectors of the first contour and to reconstruct motion vectors of the second occlusion region based on motion vectors of the second contour.