1. A motion capture system comprising: a mesh marker wherein intersections of lines of the mesh marker are defined as nodes for providing position information of feature points and lines connecting each node are defined as edges for providing connectivity information of connection between the feature points; a plurality of cameras for photographing a subject with said mesh marker to obtain 2D images of the mesh marker; a node/edge detecting section for detecting node/edge information of said mesh marker from said 2D images obtained by each camera; and a 3D reconstructing section for reconstructing 3D information of nodes by using the node/edge information which is detected from said 2D images obtained by different cameras.