1. A motion capture system comprising: a mesh marker comprising a plurality of intersecting lines, wherein intersections of the lines of the mesh marker are defined as nodes for providing position information of feature points and the lines connecting each node are defined as edges for providing connectivity information of connection between the feature points and wherein images of the lines and the intersections are obtained by photographing the mesh marker; 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, the nodes in the 2D images defined as image nodes, the node/edge information comprising position information of the image nodes and connectivity information between the image nodes; 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, wherein each of the image nodes in the image obtained by the camera is expressed as a straight line drawn from the position of each camera in the 3D space, the straight line is defined as a node vector, the nodes in the 3D space are defined as surface nodes, and a position of each surface node is reconstructable by obtaining an intersection of node vectors with respect to the positions of different cameras, and wherein said 3D reconstruction section uses the connectivity information of image nodes to select a set of intersecting node vectors.