Computer aided moire topography of 3D models of set of teeth

摘要

More effective method for description of the form of a 3D object and curved surface, than shadow moire topography and current illumination by interference modulated laser beam, was proposed. Interference modulated laser beam that illuminates reference plane screen and the object using modification of the interference pictures by means of maxima of interference fringes, enables characterization of the object by map of contour lines. Due to the change of the position of contour lines by shift of original phase we get more precisely description of the 3D surface and also the space imagine of the studied object. The change of the initial phase of interference fringes with the stationary and appropriate low space frequency of fringes can step by step very precisely describe the shape of irregular 3D object, more easy and distinct than the system of fringes with high space frequency. That's why this method seems to be advisable on the study of the shape of physiological models, e.g. the model of human set of teeth.