A method and apparatus includes a geometry transfer engine (GTE) acting as a graphical transformation engine for converting three-dimensional image data of TMD format into two-dimensional image data by perspective view transformation, and a graphics processing unit (GPU) acting as a drawing device...http://www.google.de/patents/US5793376?utm_source=gb-gplus-sharePatent US5793376 - Method of producing image data, image data processing apparatus, and recording medium 
