Research On The Coloration Methods Of Color For 3D-printing

Three Dimensional Printing (3D-Printing) is one of the most viable the rapid prototyping technology. It quickly prototypes , opetates on the desk and abundantly colorates to interior for product etc. Up to now, the key techniques of 3D-Printing is mainly controlled by Japan and America. Some of our universities and research institutes have studied on some related techniques, but researches on manufacturing the color entity are in a beginning stage, so it is important to research coloration methods of for 3 D-Printing.This paper mainly researches and designs the coloration methods for interior of entity, design a new slicing arithmetic of the STL document , it filters out repeated points and establishs a sort of new topology structure about points,edges,facets, and on condition that uses the topology structure to slice the entity , and it can decreases repeated access times , speeds up slicing ; Combining the interpolation methods of figure and picture processing ,this paper puts forward the three more suitable coloration methods of entity , and these three methods can effectively realize the color gradually changing , the effect of the color gradually changing has more smooth and friendly peculiarity. Based on analyzing RGB and CMYK color theories, the process of transforming RGB datas into CMYK datas is deeply researched . It provides a data conversion method that printer need point array , thus realizes datas conversion from upper machine to lower machine. It adopts VC++6.0 and OpenGL tools to develop software that can colorate to each slice of entity . The software have two functions, firstly, it deals with datas of STL document and completes slicing ;secondly, it uses three interpolation method of color gradually changing to colorate to each slice , and three methods have excellent effect of interpolation. This research provides a new way for developing 3D-Printing.