| Summary: | 碩士 === 國立臺灣科技大學 === 色彩與照明科技研究所 === 105 === The aim of this study is to build a complete 3D coloring process with the skin-color preferred or skin-color fidelity intents that covers 3D scanning to 3D full-color printing. It can apply to the 3D scanning facial images by using CIELAB color separation technology, and 3D printing facial images by using color correction method. To achieve preferred skin-color reproduction of 3D images, three kinds of experiments were designed in this study. The first experiment proposed the skin-color grafting method. It can apply to the grayscale child facial-images in CIELAB color space and morph the 2D grayscale facial-images into the 3D coloring facial-images. Then, the second experiment solved the problems of the forehead without makeup in our first-generation 3D cosmetic simulation algorithm by means of the improved facial feature-point extraction. The third experiment established a color correction method for the full-color 3D printer system. By introducing the polynomial regression applying to 3D printer color correction. The total color differences were reduced and the average E*ab values before and after color corrections were 5.4 and 4.0 respectively. Finally, the color-corrected 3D facial images can print out as the 3D facial models with true colors by the output of the full-color 3D printer.
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