curvature of the received 3d mesh data measures an error based on distance and curvature first sorts and simplifies a point having less error and provides an output to the controller 100 the graphic engine 102 also directly outputs simplified 3d mesh data to the display unit 106 the memory 104 stores a program for controlling a general operation of the electronic equipment temporary data generated during an operation of the electronic equipment a system parameter and other depository data in particular the memory 104 stores a program for simplifying 3d mesh data memory 104 may be composed of well known memory types such a prom ram and or flash the display unit 106 displays state information generated during an operation of the apparatus and limited number of numerals and characters the display unit 128 outputs a simplification model whose feature is preserved according to an exemplary embodiment of the present invention the input unit 108 includes keys for receiving numeral or character information and function keys for setting various kinds of functions and outputs functions corresponding to the keys pressed by a user to the controller 100 fig2 is a flow diagram illustrating a process of simplifying 3d mesh data according to an exemplary embodiment of the present invention referring to fig2 upon receiving 3d data in step 201 measurement of discrete curvature is performed at each point at step 203 the discrete curvature a surface curvature of mesh constituted of a discrete surface is calculated using geometrical information on the mesh as the discrete curvature there are an average.